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Created January 26, 2015 08:43
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python_tutorial.ipynb.txt
{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"\u041a\u0440\u0430\u0442\u043a\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u0441 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u043c\u0438 \u043f\u043e Python 2"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0414\u0430\u043d\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043d\u0438 \u0432 \u043a\u043e\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0435 \u043f\u0440\u0435\u0434\u0435\u043d\u0442\u0443\u0435\u0442 \u043d\u0430 \u043f\u043e\u043b\u043d\u043e\u0442\u0443 \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u0438\u044f :). \u041e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u0430\u044f \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u044f Python 2: http://docs.python.org/2/ . \u041e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u0441 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u043c\u0438: http://docs.python.org/2/tutorial/index.html"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u041f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0438\u0435 \u0442\u0438\u043f\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u043a\u0438\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041f\u043e\u043c\u0438\u043c\u043e \u043e\u0431\u044b\u0447\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u0441\u0432\u0430\u0438\u0432\u0430\u043d\u0438\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439, \u0435\u0441\u0442\u044c \u0435\u0449\u0435 \u0442.\u043d. \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u043f\u0440\u0438\u0441\u0432\u0430\u0438\u0432\u0430\u043d\u0438\u0435, \u043a\u043e\u0433\u0434\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u0437\u0430\u043f\u044f\u0442\u0443\u044e. \u041e\u0434\u043d\u043e\u0441\u0442\u0440\u043e\u0447\u043d\u044b\u0435 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0438 \u0432\u044b\u0434\u0435\u043b\u044f\u044e\u0442\u0441\u044f \u0437\u043d\u0430\u043a\u043e\u043c #. \u0412\u044b\u0432\u043e\u0434 \u043d\u0430 \u044d\u043a\u0440\u0430\u043d \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0432\u044b\u0432\u043e\u0434\u0438\u0442 \u0438\u0445 \u0447\u0435\u0440\u0435\u0437 \u0437\u0430\u043f\u044f\u0442\u0443\u044e. \u041f\u043e\u0434\u0440\u044f\u0434 \u0438\u0434\u0443\u0449\u0438\u0435 \u0432\u044b\u0432\u043e\u0434\u044b \u043d\u0430 \u044d\u043a\u0440\u0430\u043d \u0440\u0430\u0437\u0434\u0435\u043b\u044f\u044e\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u043e\u043c \u0441\u0442\u0440\u043e\u043a\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = 10\n",
"print a\n",
"b, c = 3.1, 4\n",
"print b, c\n",
"b, c = c, b\n",
"print b, c\n",
"print type(a), type(b), type(c)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"10\n",
"3.1 4\n",
"4 3.1\n",
"<type 'int'> <type 'int'> <type 'float'>\n"
]
}
],
"prompt_number": 14
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u0435\u0441\u0442\u044c \u043a\u0430\u043a \u0438 \u043e\u0431\u044b\u0447\u043d\u044b\u0435 \u0434\u043b\u044f \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438, \u0442\u0430\u043a \u0438 \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u0440\u0435\u0434\u043a\u0438\u0435. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u043e\u0437\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0432 \u0441\u0442\u0435\u043f\u0435\u043d\u044c. \u041a \u0442\u043e\u043c\u0443 \u0436\u0435 \u0432 \u044f\u0437\u044b\u043a \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u0430 \u0434\u043b\u0438\u043d\u043d\u0430\u044f \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u043a\u0430 \u043d\u0435\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0439 \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u0438. "
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print 2 ** 300\n",
"print type(2 ** 100)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"2037035976334486086268445688409378161051468393665936250636140449354381299763336706183397376\n",
"<type 'long'>\n"
]
}
],
"prompt_number": 15
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041a\u0430\u043a \u0438, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432 C, \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u0435 \u043c\u0435\u0436\u0434\u0443 \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u043c \u0442\u0438\u043f\u043e\u043c \u0438 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u043c."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = 2\n",
"print a ** 3 / 4\n",
"print a ** 3.0 / 4\n",
"print a ** 3 / 4.0"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n",
"2.0\n",
"2.0\n"
]
}
],
"prompt_number": 12
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e \u044f\u0437\u044b\u043a\u0443 C++, \u043d\u0430\u043f\u0438\u0441\u0430\u0432 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u0442\u0438\u043f\u0430 \u0441 \u043a\u0440\u0443\u0433\u043b\u044b\u043c\u0438 \u0441\u043a\u043e\u0431\u043a\u0430\u043c\u0438 \u043f\u043e\u0441\u043b\u0435 \u043d\u0435\u0433\u043e, \u043c\u044b \u0432\u044b\u0437\u043e\u0432\u0435\u043c \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440 \"\u043f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0435\u0433\u043e\" \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0442\u0438\u043f\u0430. \u0422\u0430\u043a \u0436\u0435 \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u044b\u0432\u0430\u0442\u044c \u043e\u0434\u0438\u043d \u0442\u0438\u043f \u043a \u0434\u0440\u0443\u0433\u043e\u043c\u0443."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print int()\n",
"print float()\n",
"print float(3)\n",
"print int(12.7)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"0\n",
"0.0\n",
"3.0\n",
"12\n"
]
}
],
"prompt_number": 18
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0422\u0430\u043a\u0436\u0435 \u0432 Python \u0435\u0441\u0442\u044c \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0442\u0438\u043f, \u0441\u0442\u0440\u043e\u043a\u0438 \u0438 \u043e\u0441\u043e\u0431\u044b\u0439 \u0442\u0438\u043f \u0441 \u0432\u0441\u0435\u0433\u043e \u043e\u0434\u043d\u0438\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c None."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print 'Hello world!'\n",
"print 'Hello world!' == \"Hello world!\"\n",
"a = None\n",
"print a"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Hello world!\n",
"True\n",
"None\n"
]
}
],
"prompt_number": 19
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0421\u043f\u0438\u0441\u043a\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u0435\u0441\u0442\u044c \u0430\u043d\u0430\u043b\u043e\u0433 \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f - \u0441\u043f\u0438\u0441\u043e\u043a. \u042d\u0442\u043e\u0442 \u0441\u043f\u0438\u0441\u043e\u043a \u043d\u0435 \u0441\u0442\u043e\u0438\u0442 \u043f\u0443\u0442\u0430\u0442\u044c \u0441\u043e \u0441\u043f\u0438\u0441\u043a\u043e\u043c, \u043a\u0430\u043a \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 (\u0433\u0434\u0435 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043f\u043e \u0438\u043d\u0434\u0435\u043a\u0441\u0443 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0437\u0430 O(N)). \u0421\u043f\u0438\u0441\u043e\u043a \u0432 Python \u043c\u043e\u0436\u0435\u0442 \u0432\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0432 \u0441\u0435\u0431\u044f \u043e\u0431\u044a\u0435\u043a\u0442\u044b \u0440\u0430\u0437\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
"print range(10)\n",
"a = [123, 12.0, None, [1, [], []], 'qwerty']\n",
"print a[0], a[2]\n",
"print [[0, 1, 0], [1, 2, 1], [0, 1, 0]][1][1]"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
"123 None\n",
"2\n"
]
}
],
"prompt_number": 17
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041c\u043e\u0449\u043d\u044b\u0435 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b Python - \u0441\u0440\u0435\u0437\u044b \u0438 \u043e\u0442\u0440\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u043d\u0434\u0435\u043a\u0441\u044b."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = range(10)\n",
"print a\n",
"print a[0:5] # elements from 0 to 4\n",
"print a[:5] # elements from begin to 4\n",
"print a[:] # elements from begin to end\n",
"print a[2:8:3] # every third element from 2 to 7 \n",
"print a[-1] # last element\n",
"print a[::-1] # reverse list"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
"[0, 1, 2, 3, 4]\n",
"[0, 1, 2, 3, 4]\n",
"[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
"[2, 5]\n",
"9\n",
"[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]\n"
]
}
],
"prompt_number": 20
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0410 \u0435\u0449\u0435 \u043c\u043e\u0436\u043d\u043e, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043e\u0442\u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u043f\u0438\u0441\u043e\u043a."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = range(10, 0, -1)\n",
"print a\n",
"b = sorted(a)\n",
"print a, b\n",
"b.sort(reverse=True)\n",
"print a, b"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]\n",
"[10, 9, 8, 7, 6, 5, 4, 3, 2, 1] [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\n",
"[10, 9, 8, 7, 6, 5, 4, 3, 2, 1] [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]\n"
]
}
],
"prompt_number": 23
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0423\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0435 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 if-elif-else. \u0412\u0441\u0435 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0431\u043b\u043e\u043a\u0438 \u0432\u044b\u0434\u0435\u043b\u044f\u044e\u0442\u0441\u044f \u043e\u0442\u0441\u0442\u0443\u043f\u0430\u043c\u0438 (\u043e\u0431\u0449\u0435\u043f\u0440\u0438\u043d\u044f\u0442\u043e \u0441\u0442\u0430\u0432\u0438\u0442\u044c 4 \u043f\u0440\u043e\u0431\u0435\u043b\u0430)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"name = 'Kolya'\n",
"if name == 'Petya':\n",
" print 'Romov', name\n",
"elif name == 'Sasha':\n",
" print 'Fonarev', name\n",
"elif name == 'Vasya':\n",
" print 'Pupkin', name\n",
"else:\n",
" print 'Unknown man'"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Unknown man\n"
]
}
],
"prompt_number": 24
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0410 \u0432\u043e\u0442 \u0446\u0438\u043a\u043b while \u0441 \u0443\u0434\u043e\u0431\u043d\u044b\u043c \u043f\u043e\u0441\u0442\u0443\u0441\u043b\u043e\u0432\u0438\u0435\u043c \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430 \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0447\u0438\u0441\u0435\u043b."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"data = [19, 2, 4, 6, 7, 3]\n",
"element_to_find = 10\n",
"i = 0\n",
"while i < len(data):\n",
" if data[i] == element_to_find:\n",
" print \"Found!\"\n",
" break\n",
" i += 1\n",
"else:\n",
" print \"Not found!\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Not found!\n"
]
}
],
"prompt_number": 25
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412\u043e\u0442 \u0441\u043f\u043e\u0441\u043e\u0431 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0442\u0430\u043a\u0443\u044e \u0436\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0446\u0438\u043a\u043b\u0430 for."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"data = [19, 2, 4, 6, 7, 3]\n",
"element_to_find = 10\n",
"for i in range(len(data)):\n",
" if data[i] == element_to_find:\n",
" print \"Found!\"\n",
" break\n",
"else:\n",
" print \"Not found!\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Not found!\n"
]
}
],
"prompt_number": 26
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0422\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c i \u0437\u0434\u0435\u0441\u044c \u043f\u0440\u043e\u0431\u0435\u0433\u0430\u0435\u0442 \u043f\u043e \u0432\u0441\u0435\u043c \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u043c \u0441\u043f\u0438\u0441\u043a\u0430 \u0438\u0437 \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432. \u0410 \u043f\u043e\u0447\u0435\u043c\u0443 \u0431\u044b \u0442\u043e\u0433\u0434\u0430 \u043d\u0435 \u043f\u0440\u043e\u0431\u0435\u0433\u0430\u0442\u044c \u0441\u0440\u0430\u0437\u0443 \u043f\u043e \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u043c \u0441\u043f\u0438\u0441\u043a\u0430 data?"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"data = [19, 2, 4, 6, 7, 3]\n",
"element_to_find = 10\n",
"for element in data:\n",
" if element == element_to_find:\n",
" print \"Found!\"\n",
" break\n",
"else:\n",
" print \"Not found!\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Not found!\n"
]
}
],
"prompt_number": 27
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0425\u043e\u0442\u044f, \u043a\u043e\u043d\u0435\u0447\u043d\u043e, \u0432\u043e\u0442 \u0441\u0430\u043c\u044b\u0439 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438, \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u044f\u043c\u043e \u0432 Python."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"data = [19, 2, 4, 6, 7, 3]\n",
"element_to_find = 10\n",
"if element_to_find in data:\n",
" print \"Found!\"\n",
"else:\n",
" print \"Not found!\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Not found!\n"
]
}
],
"prompt_number": 28
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0421\u0442\u0440\u043e\u043a\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421\u0442\u0440\u043e\u0447\u043a\u0438 \u0432 Python \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"s = 'Machine leerning is cool'\n",
"s[10] = 'a'"
],
"language": "python",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'str' object does not support item assignment",
"output_type": "pyerr",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-32-8a215097b04c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m 1\u001b[0m \u001b[0ms\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m'Machine leerning is cool'\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0ms\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m10\u001b[0m\u001b[0;34m]\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m'a'\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m: 'str' object does not support item assignment"
]
}
],
"prompt_number": 32
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0422\u0430\u043a \u0447\u0442\u043e, \u0441\u0438\u043c\u0432\u043e\u043b \u0432 \u0441\u0442\u0440\u043e\u0447\u043a\u0435 \u043c\u043e\u0436\u043d\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0442\u0430\u043a."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"s = 'Machine leerning is cool'\n",
"s = s[:10] + 'a' + s[11:]\n",
"print s"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Machine learning is cool\n"
]
}
],
"prompt_number": 33
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0422\u0430\u043a\u0436\u0435 \u0443 \u0441\u0442\u0440\u043e\u043a \u0435\u0441\u0442\u044c \u0443\u0434\u043e\u0431\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 \u0434\u043b\u044f \u0438\u0445 \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0438 \u0441\u043a\u043b\u0435\u0439\u043a\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"s = 'Machine learning is cool'\n",
"splitted = s.split(' ') \n",
"print splitted\n",
"print '_'.join(splitted)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"['Machine', 'learning', 'is', 'cool']\n",
"Machine_learning_is_cool\n"
]
}
],
"prompt_number": 35
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u041a\u043e\u0440\u0442\u0435\u0436\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u0435\u0441\u0442\u044c \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0439 \u0430\u043d\u0430\u043b\u043e\u0433 \u0441\u043f\u0438\u0441\u043a\u043e\u0432 - \u043a\u043e\u0440\u0442\u0435\u0436\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"first = ('Masha', 24)\n",
"first[0] = 'Nastya'"
],
"language": "python",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object does not support item assignment",
"output_type": "pyerr",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-37-18567edae165>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m 1\u001b[0m \u001b[0mfirst\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0;34m'Masha'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m24\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mfirst\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m]\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m'Nastya'\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m: 'tuple' object does not support item assignment"
]
}
],
"prompt_number": 37
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, \u0447\u0430\u0441\u0442\u043e \u043c\u043e\u0436\u043d\u043e \u0432\u0441\u0442\u0440\u0435\u0442\u0438\u0442\u044c \u043f\u043e\u0434\u043e\u0431\u043d\u043e\u0435 \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u0438\u0437 \u043a\u043e\u0440\u0442\u0435\u0436\u0435\u0439 (\u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435, \u0442\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0438 \u043d\u0430 \u0441\u043f\u0438\u0441\u043a\u0430\u0445)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"first = ('Masha', 24)\n",
"second = ('Vasya', 30)\n",
"third = ('Kolya', 20)\n",
"data = [first, second, third]\n",
"print data\n",
"\n",
"for name, age in data:\n",
" print name + ' is ' + str(age) + ' years old'"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[('Masha', 24), ('Vasya', 30), ('Kolya', 20)]\n",
"Masha is 24 years old\n",
"Vasya is 30 years old\n",
"Kolya is 20 years old\n"
]
}
],
"prompt_number": 39
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0425\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041e\u0442 \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0432 Python \u043c\u043e\u0436\u043d\u043e \u0432\u0437\u044f\u0442\u044c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0445\u044d\u0448-\u0444\u0443\u043d\u043a\u0446\u0438\u044e. \u041d\u0430 \u043d\u0438\u0445 \u043e\u0441\u043d\u043e\u0432\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u043c\u043d\u043e\u0433\u0438\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0435 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0435 \u0432 Python \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print hash(1543)\n",
"print hash(-15.43)\n",
"print hash('Kolya')\n",
"print hash(('Masha', 24))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1543\n",
"-2156747735\n",
"1363750548686578661\n",
"3035629031057941006\n"
]
}
],
"prompt_number": 41
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421\u043f\u0438\u0441\u043e\u043a \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c, \u0442\u0430\u043a \u0447\u0442\u043e \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0434\u043b\u044f \u043d\u0435\u0433\u043e \u0445\u044d\u0448 \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u0441\u044f."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"hash(['Masha', 24])"
],
"language": "python",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "unhashable type: 'list'",
"output_type": "pyerr",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-42-2496e8430051>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mhash\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m'Masha'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m24\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m: unhashable type: 'list'"
]
}
],
"prompt_number": 42
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 \u0438 \u0441\u043b\u043e\u0432\u0430\u0440\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u043c\u043e\u0436\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print {1, 2, 2, 1, 3}"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"set([1, 2, 3])\n"
]
}
],
"prompt_number": 43
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 \u043c\u043e\u0433\u0443\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c \u0432 \u0441\u0435\u0431\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0435 \u043e\u0431\u044a\u0435\u043a\u0442\u044b."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print {1, 2, 3, [5, 6]} "
],
"language": "python",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "unhashable type: 'list'",
"output_type": "pyerr",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-44-2db7d440495c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0;32mprint\u001b[0m \u001b[0;34m{\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m2\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m3\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m[\u001b[0m\u001b[0;36m5\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m6\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m}\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m: unhashable type: 'list'"
]
}
],
"prompt_number": 44
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432 \u043c\u043e\u0436\u043d\u043e, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0443\u0434\u0430\u043b\u044f\u0442\u044c \u0434\u0443\u0431\u043b\u0438\u043a\u0430\u0442\u044b \u0438\u0437 \u0441\u043f\u0438\u0441\u043a\u043e\u0432. \u0422\u0430\u043a \u0436\u0435 \u043d\u0430\u0434 \u043d\u0438\u043c\u0438 \u043c\u043e\u0436\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print sorted(list(set([1, 2, 2, 2, 1, 4, 6, 4])))\n",
"print sorted(list(set(range(10)) & set(range(7, 20, 2))))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[1, 2, 4, 6]\n",
"[7, 9]\n"
]
}
],
"prompt_number": 45
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u043b\u043e\u0432\u0430\u0440\u0438 (\u0430\u0441\u0441\u043e\u0446\u0438\u0430\u0442\u0438\u0432\u043d\u044b\u0435 \u043c\u0430\u0441\u0441\u0438\u0432\u044b, \u0430\u043d\u0430\u043b\u043e\u0433 map \u0432 C++). \u041a\u043b\u044e\u0447\u0438 \u0442\u043e\u0436\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u0431\u044b\u0442\u044c \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c\u0438 (\u0445\u043e\u0442\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0438 \u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c\u0438)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = {None: 10, 'Masha': [1, 2, 3], (-1, 1): 0}\n",
"a['Masha'][1] = 10\n",
"print a"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"{(-1, 1): 0, None: 10, 'Masha': [1, 10, 3]}\n"
]
}
],
"prompt_number": 50
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u041e\u0431\u0440\u0430\u0442\u0438\u0442\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435, \u0447\u0442\u043e \u043f\u0443\u0441\u0442\u044b\u0435 \u0444\u0438\u0433\u0443\u0440\u043d\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438 - \u043f\u0443\u0441\u0442\u043e\u0439 \u0441\u043b\u043e\u0432\u0430\u0440\u044c."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print {} == set()\n",
"print {} == dict()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"False\n",
"True\n"
]
}
],
"prompt_number": 46
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412\u043e\u0442 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u0441\u043f\u0438\u0441\u043a\u0430 \u0447\u0438\u0441\u0435\u043b \u0438 \u043f\u043e\u0441\u0447\u0435\u0442\u0430 \u0438\u0445 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0441\u043b\u043e\u0432\u0430\u0440\u044f."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"data = [round(math.sin(i) * 2) for i in range(100)]\n",
"\n",
"counter = dict()\n",
"for element in data:\n",
" if not element in counter:\n",
" counter[element] = 1\n",
" else:\n",
" counter[element] += 1\n",
" \n",
"print counter\n",
"print counter.keys()\n",
"print counter.values()\n",
"print counter.items()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"{0.0: 15, 1.0: 20, 2.0: 23, -1.0: 18, -2.0: 24}\n",
"[0.0, 1.0, 2.0, -1.0, -2.0]\n",
"[15, 20, 23, 18, 24]\n",
"[(0.0, 15), (1.0, 20), (2.0, 23), (-1.0, 18), (-2.0, 24)]\n"
]
}
],
"prompt_number": 55
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412\u044b\u0448\u0435 \u0431\u044b\u043b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d \u0442\u0430\u043a \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u043c\u044b\u0439 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0441\u043f\u0438\u0441\u043a\u0430 \u043e\u0434\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u043e\u0439 \u043a\u043e\u0434\u0430. \u041f\u043e\u0434\u043e\u0431\u043d\u044b\u0435 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u043e\u043a\u0430\u0437\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u043e\u0447\u0435\u043d\u044c \u0443\u0434\u043e\u0431\u043d\u044b \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435. \u041d\u0438\u0436\u0435 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043e \u0435\u0449\u0435 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print [i ** 2 for i in range(20)]\n",
"print [[] for i in range(3)]\n",
"print [s + ' is cool' for s in ['Yandex', 'Google', 'Yahoo'] if s[0] == 'Y']"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361]\n",
"[[], [], []]\n",
"['Yandex is cool', 'Yahoo is cool']\n"
]
}
],
"prompt_number": 58
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0412\u0432\u043e\u0434 \u0438 \u0432\u044b\u0432\u043e\u0434"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421\u0447\u0438\u0442\u044b\u0432\u0430\u043d\u0438\u0435 \u0438\u0437 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0433\u043e \u043f\u043e\u0442\u043e\u043a\u0430 \u0432\u0432\u043e\u0434\u0430 \u0432\u0441\u0435\u0445 \u0441\u0442\u0440\u043e\u043a, \u043e\u0442\u0440\u0435\u0437\u0430\u043d\u0438\u0435 \u043a\u0440\u0430\u0439\u043d\u0438\u0445 \u043f\u0440\u043e\u0431\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u0438 \u0432\u044b\u0432\u043e\u0434 \u0441 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 \u043f\u043e\u0442\u043e\u043a \u0432\u044b\u0432\u043e\u0434\u0430 (\u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e print \u0442\u043e\u0436\u0435 \u0432\u044b\u0432\u043e\u0434\u0438\u0442 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 \u043f\u043e\u0442\u043e\u043a \u0432\u044b\u0432\u043e\u0434\u0430 sys.stdout)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from sys import stdin\n",
"from sys import stdout\n",
"for line in stdin:\n",
" line = line.strip()\n",
" print >> stdout, line + '!'"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 59
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421\u0447\u0438\u0442\u044b\u0432\u0430\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0444\u0430\u0439\u043b\u0430 \u0441 \u0434\u0430\u043d\u043d\u044b\u043c\u0438, \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u043c\u0438 \u0437\u0430\u043f\u044f\u0442\u043e\u0439, \u0438 \u0432\u044b\u0432\u043e\u0434 \u0432 \u0434\u0440\u0443\u0433\u043e\u0439 \u0444\u0430\u0439\u043b \u0442\u043e\u043b\u044c\u043a\u043e 2\u0433\u043e \u0438 4\u0433\u043e \u0441\u0442\u043e\u043b\u0431\u0446\u0430 \u0447\u0435\u0440\u0435\u0437 \u0442\u0430\u0431\u0443\u043b\u044f\u0446\u0438\u044e."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"in_file = open('in_file.txt')\n",
"out_file = open('out_file.txt', 'w')\n",
"\n",
"title = in_file.readline()\n",
"for line in in_file:\n",
" cells = line.split(',')\n",
" print >> out_file, '\\t'.join([cells[1], cells[3]])"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u0424\u0443\u043d\u043a\u0446\u0438\u0438 \u0438 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440 \u043f\u0430\u043c\u044f\u0442\u0438"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u0438\u043c\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u0430 - \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0430\u043c\u044f\u0442\u0438. \u041f\u0440\u0438 \u043f\u0440\u0438\u0441\u0432\u0430\u0438\u0432\u0430\u043d\u0438\u0438 \u0441\u043b\u043e\u0436\u043d\u044b\u0445 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0441\u043f\u0438\u0441\u043a\u043e\u0432) \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0441\u044b\u043b\u043a\u0438, \u0430 \u043d\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u0430."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = range(5)\n",
"b = a\n",
"b[3] = 100\n",
"print a, b\n",
"b = range(10)\n",
"print a, b"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[0, 1, 2, 100, 4] [0, 1, 2, 100, 4]\n",
"[0, 1, 2, 100, 4] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n"
]
}
],
"prompt_number": 61
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0412 Python \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u0432\u043e\u0434\u0438\u0442\u044c \u043e\u0431\u044b\u0447\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0438 \u043b\u044f\u043c\u0431\u0434\u0430-\u0444\u0443\u043d\u043a\u0446\u0438\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def get_degrees(n):\n",
" return n ** 2, n ** 3\n",
"print get_degrees(12)\n",
"print (lambda n: (n ** 2, n ** 3))(12)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(144, 1728)\n",
"(144, 1728)\n"
]
}
],
"prompt_number": 63
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0410 \u0432\u043e\u0442 \u043a\u0430\u043a \u043c\u043e\u0436\u0435\u0442 \u043d\u0435\u043e\u0447\u0435\u0432\u0438\u0434\u043d\u043e, \u043d\u043e \u043e\u0431\u044a\u044f\u0441\u043d\u0438\u043c\u043e \u043c\u043e\u0436\u0435\u0442 \u0432\u0435\u0441\u0442\u0438 \u0441\u0435\u0431\u044f \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440 \u043f\u0430\u043c\u044f\u0442\u0438."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def change_list(a, flag=True):\n",
" if flag:\n",
" a[0] = 'qwerty'\n",
" return\n",
" a = [15, 43]\n",
" \n",
"x = [1, 2, 3, 4]\n",
"y = [1, 2, 3, 4]\n",
"change_list(x)\n",
"change_list(y, False)\n",
"print x, y"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"['qwerty', 2, 3, 4] [1, 2, 3, 4]\n"
]
}
],
"prompt_number": 64
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0422\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u043d\u043e, \u043d\u0435 \u043f\u043e\u043c\u043d\u044f \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u0443 \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0438 \u0432\u044b\u0437\u043e\u0432\u0435 \u0438\u0445 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u044f."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def my_func(param1, param2='ML', param3=10):\n",
" print param1, param2, param3\n",
"my_func(param2='Data Mining', param1=[0, 0])"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"[0, 0] Data Mining 10\n"
]
}
],
"prompt_number": 65
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"\u041a\u043b\u0430\u0441\u0441\u044b"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043a\u043b\u0430\u0441\u0441\u043e\u0432 \u043f\u0440\u043e\u0441\u0442. \u0421\u043b\u0443\u0436\u0435\u0431\u043d\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u043d\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u0441 \u0434\u0432\u0443\u043c\u044f \u043f\u043e\u0434\u0447\u0435\u0440\u043a\u0438\u0432\u0430\u043d\u0438\u044f\u043c\u0438 \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u0438 \u043a\u043e\u043d\u0446\u0435. \u0422\u0430\u043a, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, __init__ - \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440. \u041f\u0435\u0440\u0432\u044b\u0439 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430 - \u0441\u0430\u043c \u043e\u0431\u044a\u0435\u043a\u0442, \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u043c\u0435\u0442\u043e\u0434. \u041f\u0440\u0438\u043d\u044f\u0442\u043e \u043d\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u044d\u0442\u043e\u0442 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 self."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"class MyClass:\n",
" def __init__(self, param):\n",
" self.field = param\n",
"\n",
" def get_squared_param(self):\n",
" return self.field ** 2\n",
"\n",
"a = MyClass(10)\n",
"print a\n",
"print a.field\n",
"print a.get_squared_param()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"<__main__.MyClass instance at 0x1046ba098>\n",
"10\n",
"100\n"
]
}
],
"prompt_number": 68
}
],
"metadata": {}
}
]
}
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