{
"metadata": {
"name": "",
"signature": "sha256:395f91f52f5165130592aef7f92afdbea52f690b93426a4caf3da2a8b3404bd6"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 3: Making Decisions"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.1, page no. 88"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"number = 0;\n",
"print \"\\nEnter an integer between 1 and 10: \",\n",
"number = int(raw_input())\n",
" \n",
"if(number > 5):\n",
" print \"You entered %d which is greater than 5\\n\" % number\n",
"if(number < 6):\n",
" print \"You entered %d which is less than 6\\n\" % number"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"Enter an integer between 1 and 10: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" You entered 6 which is greater than 5\n",
"\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.2, page no. 91"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"unit_price = 3.50\n",
"print \"Enter the number that you want to buy: \", \n",
"quantity = int(raw_input())\n",
"if(quantity > 10):\n",
" total = quantity*unit_price*0.95 # 5% discount\n",
" print \"The price for %d is $%.2f\\n\" % (quantity, total)\n",
"else:\n",
" total = quantity*unit_price #no discount\n",
" print \"The price for %d is $%.2f\\n\" % (quantity, total)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the number that you want to buy: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"20\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The price for 20 is $66.50\n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.3, page no. 95"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"test = 0.0\n",
"print \"Enter an integer: \",\n",
"test = int(raw_input())\n",
" \n",
"if(test % 2 == 0):\n",
" print \"The number %ld is even\" %test\n",
"if((test/2) % 2 == 0):\n",
" print \"Half of %d is also even\" %test\n",
" print \"That's interesting isn't it?\"\n",
"else:\n",
" print \"The number %d is odd\\n\" %test"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter an integer: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"20\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The number 20 is even\n",
"Half of 20 is also even\n",
"That's interesting isn't it?\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.4, page no. 98"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"Enter an uppercase letter:\",\n",
"letter = raw_input()\n",
"if(ord(letter) >= ord('A')):\n",
" if(ord(letter) <= ord('Z')):\n",
" letter = chr( ord(letter) - ord('A') + ord('a'))\n",
" print \"You entered an uppercase %c\" %letter\n",
" else:\n",
" print \"Try using the shift key! I want a capital letter.\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter an uppercase letter:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"G\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" You entered an uppercase g\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.5, page no. 103"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"Enter an uppercase letter:\",\n",
"letter = raw_input()\n",
"if( (ord(letter) >= ord('A')) and (ord(letter) <= ord('Z')) ):\n",
" letter = chr( ord(letter) - ord('A') + ord('a'))\n",
" print \"You entered an uppercase %c\" %letter\n",
"else:\n",
" print \"You did not enter an uppercase letter.\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter an uppercase letter:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"j\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" You did not enter an uppercase letter.\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.6, page no. 105"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"unit_price = 3.50\n",
"discount1 = 0.05\n",
"discount2 = 0.1\n",
"discount3 = 0.15\n",
"total_price = 0.0\n",
" \n",
"print \"Enter the number that you want to buy:\",\n",
"quantity = int(raw_input())\n",
" \n",
"if(quantity >50):\n",
" total_price = quantity*unit_price*(1.0-discount3)\n",
"elif(quantity > 20):\n",
" total_price = quantity*unit_price*(1.0-discount2)\n",
"elif(quantity > 10):\n",
" total_price = quantity*unit_price*(1.0-discount1)\n",
"else:\n",
" total_price = quantity*unit_price*(1.0-0.0)\n",
"print \"The price for %d is $%.2f\\n\" %(quantity, total_price)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the number that you want to buy:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"60\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The price for 60 is $178.50\n",
"\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.7, page no. 109"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"age = 0\n",
"college = 0\n",
"subject = 0\n",
"interview = False # true for accept, false for reject\n",
"\n",
"print \"What college? 1 for Harvard, 2 for Yale, 3 for other: \",\n",
"college = int(raw_input())\n",
"print \"What subject? 1 for Chemistry, 2 for economics, 3 for other: \",\n",
"subject = int(raw_input())\n",
"print \"How old is the applicant? \",\n",
"age = int(raw_input())\n",
" \n",
"if( (age>25 and subject==1) and (college==3 or college == 1) ):\n",
" interview = True\n",
"if(college == 2 and subject == 1):\n",
" interview = True\n",
"if(college == 1 and subject == 2 and not(age > 28)):\n",
" interview = True\n",
"if(college == 2 and (subject == 2 or subject == 3) and age > 25):\n",
" interview = True\n",
" \n",
"if(interview):\n",
" print \"Give 'em an interview\"\n",
"else:\n",
" print \"Reject 'em\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What college? 1 for Harvard, 2 for Yale, 3 for other: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" What subject? 1 for Chemistry, 2 for economics, 3 for other: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" How old is the applicant? "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"24\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Give 'em an interview\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.8, page no. 117"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"Pick a number between 1 and 10 and you may win a prize! \",\n",
"choice = int(raw_input())\n",
"if((choice > 10) or (choice < 1)):\n",
" choice = 11\n",
"if choice == 7:\n",
" print \"Congratulations!\"\n",
" print \"You win the collected works of Amos Gruntfuttock.\"\n",
"elif choice == 2:\n",
" print \"You win the folding thermometer-pen-watch-umbrella.\"\n",
"elif choice == 8:\n",
" print \"You win the lifetime supply of aspirin tablets.\"\n",
"elif choice == 11:\n",
" print \"Try between 1 and 10. You wasted your guess.\",\n",
"else:\n",
" print \"Sorry, you lose.\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Pick a number between 1 and 10 and you may win a prize! "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"7\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Congratulations!\n",
"You win the collected works of Amos Gruntfuttock.\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.9, page no. 119"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"Enter Y or N: \",\n",
"answer = raw_input()\n",
"\n",
"if answer =='y' or answer == 'Y':\n",
" print \"You responded in the affirmative.\"\n",
"elif answer == 'n' or answer == 'N':\n",
" print \"You responded in the negative.\"\n",
"else:\n",
" print \"You did not respond correctly. . .\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter Y or N: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"y\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" You responded in the affirmative.\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 3.10, page no. 128"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"original = 0xABC\n",
"result = 0\n",
"mask = 0xF\n",
"\n",
"print \"original = %X\" % original\n",
"result |= original & mask\n",
" \n",
"original = original >> 4\n",
"result = result << 4\n",
"result |= original&mask\n",
" \n",
"original = original >> 4\n",
"result = result << 4\n",
"result |= original & mask\n",
"print \"result = %X\" % result"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"original = ABC\n",
"result = CBA\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
" Program 3.11, page no. 132"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"Enter the calculation\\n\",\n",
"number1 = float(raw_input(\"Enter first number: \"))\n",
"number2 = float(raw_input(\"Enter second number: \"))\n",
"operation = raw_input(\"Enter operation '+' or '-' or '/' or '%' or '*': \")\n",
" \n",
"if operation == '+':\n",
" print \"= %f\" %(number1 + number2)\n",
"elif operation == '-':\n",
" print \"= %f\" %(number1 - number2)\n",
"elif operation == '*':\n",
" print \"= %f\" %(number1 * number2);\n",
"elif operation == '/':\n",
" if(number2 == 0):\n",
" print \"Division by zero error!\"\n",
" else:\n",
" print \"= %f\\n\" %(number1 / number2)\n",
"elif operation == '%':\n",
" if(number2 == 0):\n",
" print \"Division by zero error!\"\n",
" else:\n",
" print \"= %f\\n\" %(number1 % number2)\n",
"else:\n",
" print \"Illegal operation!\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the calculation\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter first number: 25\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter second number: 24\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter operation '+' or '-' or '/' or '%' or '*': *\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"= 600.000000\n"
]
}
],
"prompt_number": 13
}
],
"metadata": {}
}
]
}