CountDown.ipynb

CountDown.ipynb

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    {
      "metadata": {},
      "cell_type": "markdown",
      "source": "## Python Script that will calculate the time until an arbitrary date"
    },
    {
      "metadata": {},
      "cell_type": "markdown",
      "source": "### This version just outputs once:"
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "from datetime import datetime\nimport pytz\nfrom math import floor\n\nend_date = datetime(2014,12,18,19,30,0,0,pytz.UTC)  # explicitly make time zone UTC\n\ntime_till_end_date = end_date - datetime.now(pytz.UTC) # explicitly make time zone UTC\n\ntotal_seconds = time_till_end_date.total_seconds()\ndays_left_remainder = total_seconds/(60*60*24) - floor(total_seconds/(60*60*24))\nhours_left = days_left_remainder * 24\nhours_left_remainder = days_left_remainder * 24 - floor(hours_left)\nminutes_left = hours_left_remainder * 60\nminutes_left_remainder = minutes_left - floor(minutes_left)\nseconds_left = minutes_left_remainder * 60\n\nprint('Days:', time_till_end_date.days, '|', 'Hours:', int(hours_left), '|', 'Minutes:', int(minutes_left), '|',\n      'Seconds:', int(seconds_left))",
      "execution_count": null,
      "outputs": []
    },
    {
      "metadata": {},
      "cell_type": "markdown",
      "source": "### This version will continuously update the countdown:"
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "from datetime import datetime\nimport pytz\nfrom math import floor\n\nend_date = datetime(2017,9,27,19,30,0,0,pytz.UTC)  # explicitly make time zone UTC\n\nwhile True:\n    time_till_end_date = end_date - datetime.now(pytz.UTC)  # explicitly make time zone UTC\n\n    total_seconds = time_till_end_date.total_seconds()\n    days_left_remainder = total_seconds/(60*60*24) - floor(total_seconds/(60*60*24))\n    hours_left = days_left_remainder * 24\n    hours_left_remainder = days_left_remainder * 24 - floor(hours_left)\n    minutes_left = hours_left_remainder * 60\n    minutes_left_remainder = minutes_left - floor(minutes_left)\n    seconds_left = minutes_left_remainder * 60\n\n    # print on the same line\n    print('\\r'+'Days: ' + str(time_till_end_date.days) + ' | ' + 'Hours: ' + str(int(hours_left)) + ' | ' + 'Minutes: ' + \\\n          str(int(minutes_left)) + ' | ' + 'Seconds: ' + \"{0:d}\".format(int(seconds_left)),end='')",
      "execution_count": null,
      "outputs": []
    },
    {
      "metadata": {},
      "cell_type": "markdown",
      "source": "#### Thanks to Jim at the DOJO who suggested that I take advantage of the divmod() built-in function, the code is now so much more simpler:"
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "from datetime import datetime\nimport pytz\nimport time\n\n# Time until July 2019 shutdown\nend_date = datetime(2019,6,28,20,0,0,0,pytz.UTC)  # explicitly make time zone UTC.  EST is 5 hours behind UTC\n\nwhile True:\n    time_till_end_date = end_date - datetime.now(pytz.UTC)  # explicitly make time zone UTC\n    total_seconds = time_till_end_date.total_seconds()\n    \n    minutes, seconds = divmod(total_seconds, 60)\n    hours, minutes = divmod(minutes, 60)\n    days, hours = divmod(hours, 24)\n\n    print('\\r' + str(int(days)) + ' day(s)' + ' | ' + str(int(hours)) + ' hour(s)' + ' | ' + str(int(minutes)) + \\\n        ' minute(s)' + ' | ' + str(int(seconds)) + ' second(s)',end='')\n    \n    time.sleep(1)",
      "execution_count": 3,
      "outputs": [
        {
          "name": "stdout",
          "output_type": "stream",
          "text": "16 day(s) | 3 hour(s) | 48 minute(s) | 55 second(s)"
        },
        {
          "ename": "KeyboardInterrupt",
          "evalue": "",
          "output_type": "error",
          "traceback": [
            "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[1;31mKeyboardInterrupt\u001b[0m                         Traceback (most recent call last)",
            "\u001b[1;32m<ipython-input-3-2924c2b3ed7c>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m     17\u001b[0m         ' minute(s)' + ' | ' + str(int(seconds)) + ' second(s)',end='')\n\u001b[0;32m     18\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 19\u001b[1;33m     \u001b[0mtime\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0msleep\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[1;31mKeyboardInterrupt\u001b[0m: "
          ]
        }
      ]
    },
    {
      "metadata": {},
      "cell_type": "markdown",
      "source": "### Another silly example of printing on the same line"
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "import time\n\nmessage = 'ALL YOUR BASE ARE BELONG TO US!'\n\nfor i in range(1, len(message)+1):\n    time.sleep(0.3)\n    print('\\r'+message[:i],end='')",
      "execution_count": 2,
      "outputs": [
        {
          "name": "stdout",
          "output_type": "stream",
          "text": "ALL YOUR BASE ARE BELONG TO US!"
        }
      ]
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "import time\nimport subprocess\nimport platform\n\nmessage = 'ALL YOUR BASE ARE BELONG TO US!'\n\nwhile True:\n    for i in range(1, len(message)+1):\n        time.sleep(0.3)\n        print('\\r'+message[:i],end='')\n    time.sleep(0.2)\n    subprocess.Popen( \"cls\" if platform.system() == \"Windows\" else \"clear\", shell=True)",
      "execution_count": null,
      "outputs": []
    }
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