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December 5, 2016 10:30
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{ | |
"cells": [ | |
{ | |
"cell_type": "code", | |
"execution_count": 53, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newstring='Hello World'" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 54, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'Hello World'" | |
] | |
}, | |
"execution_count": 54, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newstring" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 55, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"name": "stdout", | |
"output_type": "stream", | |
"text": [ | |
"Hello World\n" | |
] | |
} | |
], | |
"source": [ | |
"print(newstring)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 56, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"ename": "SyntaxError", | |
"evalue": "invalid syntax (<ipython-input-56-8c5b85561ed9>, line 1)", | |
"output_type": "error", | |
"traceback": [ | |
"\u001b[1;36m File \u001b[1;32m\"<ipython-input-56-8c5b85561ed9>\"\u001b[1;36m, line \u001b[1;32m1\u001b[0m\n\u001b[1;33m newstring2='Hello World's'\u001b[0m\n\u001b[1;37m ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n" | |
] | |
} | |
], | |
"source": [ | |
"newstring2='Hello World's'" | |
] | |
}, | |
{ | |
"cell_type": "markdown", | |
"metadata": {}, | |
"source": [ | |
"Double Quotes and Single Qoutes" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 57, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [], | |
"source": [ | |
"newstring2=\"Hello World's\"" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 58, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"name": "stdout", | |
"output_type": "stream", | |
"text": [ | |
"Hello World's\n" | |
] | |
} | |
], | |
"source": [ | |
"print(newstring2)" | |
] | |
}, | |
{ | |
"cell_type": "markdown", | |
"metadata": {}, | |
"source": [ | |
"Escape charachter \\" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 59, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newstring3=\"Hello, World\\'s\"" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 60, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"name": "stdout", | |
"output_type": "stream", | |
"text": [ | |
"Hello, World's\n" | |
] | |
} | |
], | |
"source": [ | |
"print(newstring3)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 61, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"\"Hello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World'sHello, World's\"" | |
] | |
}, | |
"execution_count": 61, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"100*newstring3" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 62, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newnames='ajay,vijay,john,donald,hillary,bill,ashok'" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 63, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"str" | |
] | |
}, | |
"execution_count": 63, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"type(newnames)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 64, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'ajay,vija'" | |
] | |
}, | |
"execution_count": 64, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames[0:9]" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 65, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newnames2=['ajay','vijay','john','donald','hillary','bill','ashok']" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 66, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"list" | |
] | |
}, | |
"execution_count": 66, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"type(newnames2)" | |
] | |
}, | |
{ | |
"cell_type": "markdown", | |
"metadata": {}, | |
"source": [ | |
"In R, a list would be created like this newnames2=c('ajay','vijay','john','donald','hillary','bill','ashok')" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 67, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'ajay'" | |
] | |
}, | |
"execution_count": 67, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2[0]" | |
] | |
}, | |
{ | |
"cell_type": "markdown", | |
"metadata": {}, | |
"source": [ | |
"So in R the index starts from 1 , while in Python the index starts with 0. Copius battles have been fought and beers drunk to determine which method is better. However the difference is more important to the mildly confused and bemused person making the transition from one language to other" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 68, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newnames2[0]='micky mouse' #substituting members in a list" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 69, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"['micky mouse', 'vijay', 'john', 'donald', 'hillary', 'bill', 'ashok']" | |
] | |
}, | |
"execution_count": 69, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 70, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'john'" | |
] | |
}, | |
"execution_count": 70, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2[2]" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 71, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [], | |
"source": [ | |
"newnames2.append('daisy')" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 72, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"['micky mouse', 'vijay', 'john', 'donald', 'hillary', 'bill', 'ashok', 'daisy']" | |
] | |
}, | |
"execution_count": 72, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 73, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [], | |
"source": [ | |
"del newnames2[2]" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 75, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"['micky mouse', 'vijay', 'donald', 'hillary', 'bill', 'ashok', 'daisy']" | |
] | |
}, | |
"execution_count": 75, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 76, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"newlist=[1,2,4,7]" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 77, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"['micky mouse',\n", | |
" 'vijay',\n", | |
" 'donald',\n", | |
" 'hillary',\n", | |
" 'bill',\n", | |
" 'ashok',\n", | |
" 'daisy',\n", | |
" 1,\n", | |
" 2,\n", | |
" 4,\n", | |
" 7]" | |
] | |
}, | |
"execution_count": 77, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newnames2+newlist" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 78, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"[1, 2, 4, 7, 1, 2, 4, 7, 1, 2, 4, 7]" | |
] | |
}, | |
"execution_count": 78, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"newlist*3" | |
] | |
}, | |
{ | |
"cell_type": "markdown", | |
"metadata": {}, | |
"source": [ | |
"a tuple is a list that uses parenthese () not square brackets [] and it cant be modified at all once created " | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 79, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"scores=(23,46,69,7,5)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 80, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"tuple" | |
] | |
}, | |
"execution_count": 80, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"type(scores)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 81, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"7" | |
] | |
}, | |
"execution_count": 81, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"scores[3]" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 82, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"['__add__',\n", | |
" '__class__',\n", | |
" '__contains__',\n", | |
" '__delattr__',\n", | |
" '__dir__',\n", | |
" '__doc__',\n", | |
" '__eq__',\n", | |
" '__format__',\n", | |
" '__ge__',\n", | |
" '__getattribute__',\n", | |
" '__getitem__',\n", | |
" '__getnewargs__',\n", | |
" '__gt__',\n", | |
" '__hash__',\n", | |
" '__init__',\n", | |
" '__iter__',\n", | |
" '__le__',\n", | |
" '__len__',\n", | |
" '__lt__',\n", | |
" '__mul__',\n", | |
" '__ne__',\n", | |
" '__new__',\n", | |
" '__reduce__',\n", | |
" '__reduce_ex__',\n", | |
" '__repr__',\n", | |
" '__rmul__',\n", | |
" '__setattr__',\n", | |
" '__sizeof__',\n", | |
" '__str__',\n", | |
" '__subclasshook__',\n", | |
" 'count',\n", | |
" 'index']" | |
] | |
}, | |
"execution_count": 82, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"dir(scores)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 83, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"favourite_movie=['micky mouse,steamboat willie', 'vijay,slumdog millionaire', 'john,passion of christ', 'donald,arthur']" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 84, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"list" | |
] | |
}, | |
"execution_count": 84, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"type(favourite_movie)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 85, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"favourite_movie2={'micky mouse':'steamboat willie','vijay':'slumdog millionaire','john':'passion of christ','donald':'arthur'}" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 86, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"dict" | |
] | |
}, | |
"execution_count": 86, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"type(favourite_movie2)" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 88, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'steamboat willie'" | |
] | |
}, | |
"execution_count": 88, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"favourite_movie2['micky mouse']" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 89, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
{ | |
"data": { | |
"text/plain": [ | |
"'slumdog millionaire'" | |
] | |
}, | |
"execution_count": 89, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"favourite_movie2['vijay']" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": null, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [], | |
"source": [] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": null, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [] | |
} | |
], | |
"metadata": { | |
"anaconda-cloud": {}, | |
"kernelspec": { | |
"display_name": "Python [Root]", | |
"language": "python", | |
"name": "Python [Root]" | |
}, | |
"language_info": { | |
"codemirror_mode": { | |
"name": "ipython", | |
"version": 3 | |
}, | |
"file_extension": ".py", | |
"mimetype": "text/x-python", | |
"name": "python", | |
"nbconvert_exporter": "python", | |
"pygments_lexer": "ipython3", | |
"version": "3.5.2" | |
} | |
}, | |
"nbformat": 4, | |
"nbformat_minor": 0 | |
} |
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