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{
"metadata": {
"name": "Chapter 7"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": "Chapter 7: Programming process"
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": "Example 7.1, Page number: 126"
},
{
"cell_type": "code",
"collapsed": false,
"input": "# Example 7.1.py\n# To perform an operation based on operator input by the user\n\n\n# Variable declaration\nresult = 0\ni = 0\n\n# Calculation and result\nwhile (i < 3) :\n print ('Result: %d' % result)\n operator = '+'\n value = 10\n\n if operator == '+' :\n result += value\n else :\n print ('Unknown operator %c' % operator)\n i = i + 1 ",
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": "Result: 0\nResult: 10\nResult: 20\n"
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": "Example 7.2, Page number: 133"
},
{
"cell_type": "code",
"collapsed": false,
"input": "# Example 7.2.py\n# To perform various arithmetic operations based on operator input by the user\n\n\n# Variable declaration\nresult = 0\ni = 0\n\n# Calculation and result\nwhile (i < 3) :\n print ('Result: %d' % result)\n operator = '+'\n value = 5\n\n if operator == 'q' or operator == 'Q' :\n break\n\n if operator == '+' :\n result += value\n\n if operator == '-' :\n result -= value\n\n if operator == '*' :\n result *= value\n\n if operator == '/' :\n if value == 0 :\n print ('Error: Divide by zero')\n print ('operation ignored') \n else :\n result /= value\n\n i = i + 1",
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": "Result: 0\nResult: 5\nResult: 10\n"
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": "Example 7.3, Page number: 140"
},
{
"cell_type": "code",
"collapsed": false,
"input": "# Example 7.3.py\n# Guess - A simple guessing game\n# A random number is chosen between 1 and 100. \n# The player is given a set of bounds and \n# must choose a number between them. \n# If the player chooses the correct number, he wins.\n# Otherwise, the bounds are adjusted to reflect\n# the player's guess and the game continues.\n\n# Variable declaration, calculation and result\nimport sys\nimport random\nwhile (1) :\n\n # random number to be guessed\n number_to_guess = random.randrange (1, 101, 1)\n\n # current lower limit of player's range\n low_limit = 0\n\n # current upper limit of player's range\n high_limit = 100\n \n # number of times player guessed\n guess_count = 0\n\n while (1) :\n \n # tell user what the bounds are and get his guess\n print ('Bounds %d - %d\\n' % (low_limit, high_limit))\n print ('Value[%d]?' % guess_count)\n \n guess_count += 1\n\n # number gotten from the player\n player_number = 50\n\n # did he guess right?\n if (player_number == number_to_guess) :\n break\n\n # adjust bounds for next guess\n if (player_number < number_to_guess) :\n low_limit = player_number\n \n else :\n high_limit = player_number\n\n print ('Bingo\\n')",
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
