{
"metadata": {
"name": "",
"signature": "sha256:62d8fc451396635cdeab5f4f92b23401a31f7b72236a9f3ecb8a6d1a87f20612"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 2: First Steps in Programming"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.1, page no. 27"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"print \"My salary is $10000\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"My salary is $10000\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.2, page no. 29"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
" \n",
"salary = 10000; #Declare and store 10000 in variable called salary\n",
"print \"My salary is %d.\" %salary"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"My salary is 10000.\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.3, page no. 31"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"brothers = 7 #declaring variable & storing value\n",
"brides = 7 #declaring variable & storing value\n",
" \n",
"print \"%d brides for %d brothers\" %(brides, brothers)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"7 brides for 7 brothers\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.4, page no. 34"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"cats = 2\n",
"dogs = 1\n",
"ponies = 1\n",
"others = 46\n",
" \n",
"total_pets = cats + dogs + ponies + others;\n",
" \n",
"print \"We have %d pets in total\\n\" %total_pets"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"We have 50 pets in total\n",
"\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.5, page no. 37"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"cookies = 5\n",
"cookie_calories = 125\n",
"total_eaten = 0\n",
"eaten = 2\n",
"cookies = cookies - eaten\n",
"total_eaten = total_eaten + eaten\n",
"print \"I have eaten %d cookies. There are %d cookies left\" %(eaten, cookies)\n",
" \n",
"eaten = 3\n",
"cookies = cookies - eaten\n",
"total_eaten = total_eaten + eaten\n",
"print \"I have eaten %d more. Now there are %d cookies left\\n\" %(eaten, cookies)\n",
"print \"Total energy consumed is %d calories.\\n\" %(total_eaten*cookie_calories)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"I have eaten 2 cookies. There are 3 cookies left\n",
"I have eaten 3 more. Now there are 0 cookies left\n",
"\n",
"Total energy consumed is 625 calories.\n",
"\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.6, page no. 39"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"cookies = 45\n",
"children = 7\n",
"cookies_per_child = 0\n",
"cookies_left_over = 0\n",
" \n",
"cookies_per_child = cookies/children\n",
"print \"You have %d children and %d cookies\" %(children, cookies)\n",
"print \"Give each child %d cookies.\\n\" %cookies_per_child\n",
"cookies_left_over = cookies%children\n",
"print \"There are %d cookies left over.\\n\" %cookies_left_over"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"You have 7 children and 45 cookies\n",
"Give each child 6 cookies.\n",
"\n",
"There are 3 cookies left over.\n",
"\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.7, page no. 48"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"plank_length = 10.0\n",
"piece_count = 4.0\n",
"piece_length = 0.0\n",
" \n",
"piece_length = plank_length/piece_count;\n",
"print \"A plank %f feet long can be cut into %f pieces %f feet long.\\n\" %(plank_length, piece_count, piece_length)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"A plank 10.000000 feet long can be cut into 4.000000 pieces 2.500000 feet long.\n",
"\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.8, page no. 51"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"radius = 0.0\n",
"diameter = 0.0\n",
"circumference = 0.0\n",
"area = 0.0\n",
"Pi = 3.14159265\n",
" \n",
"print \"Input the diameter of the table:\",\n",
"diameter = float(raw_input()) \n",
"radius = diameter/2.0\n",
"circumference = 2.0*Pi*radius\n",
"area = Pi*radius*radius\n",
" \n",
"print \"\\nThe circumference is %0.2f\" %circumference\n",
"print \"\\nThe area is %0.2f\\n\" %area"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Input the diameter of the table:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" \n",
"The circumference is 18.85\n",
"\n",
"The area is 28.27\n",
"\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.9, page no. 54"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"PI = 3.14159\n",
" \n",
"radius = 0.0\n",
"diameter = 0.0\n",
"circumference = 0.0\n",
"area = 0.0\n",
" \n",
"print \"Input the diameter of a table:\", \n",
"diameter = float(raw_input())\n",
" \n",
"radius = diameter/2.0\n",
"circumference = 2.0*PI*radius\n",
"area = PI*radius*radius;\n",
" \n",
"print \"\\nThe circumference is %.2f. \" %circumference\n",
"print \"\\nThe area is %.2f.\\n\" %area"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Input the diameter of a table:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" \n",
"The circumference is 18.85. \n",
"\n",
"The area is 28.27.\n",
"\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.10, page no. 55"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"diameter = 0.0\n",
"radius = 0.0\n",
"Pi = 3.14159\n",
" \n",
"print \"Input the diameter of the table:\",\n",
"diameter = float(raw_input())\n",
"radius = diameter/2.0\n",
" \n",
"print \"\\nThe circumference is %.2f.\" %(2.0*Pi*radius)\n",
"print \"\\nThe area is %.2f.\\n\" %(Pi*radius*radius)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Input the diameter of the table:"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" \n",
"The circumference is 18.85.\n",
"\n",
"The area is 28.27.\n",
"\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"example 2.12, page no. 59"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"import sys \n",
"\n",
"print \"Size of Integer is: \" + str(sys.getsizeof(int()))\n",
"print \"Size of Float is: \" + str(sys.getsizeof(float()))\n",
"print \"Size of Long is: \" + str(sys.getsizeof(long()))\n",
"print \"Size of String is: \" + str(sys.getsizeof(str()))\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Size of Integer is: 24\n",
"Size of Float is: 24\n",
"Size of Long is: 24\n",
"Size of String is: 37\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.13, page no. 60"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"Revenue_Per_150 = 4.5\n",
"JanSold = 23500\n",
"FebSold = 19300\n",
"MarSold = 21600\n",
"RevQuarter = 0.0\n",
" \n",
"QuarterSold = JanSold + FebSold + MarSold\n",
" \n",
"print \"Stock sold in\\n Jan: %d\\n Feb: %d\\n Mar: %d\\n\" %(JanSold, FebSold, MarSold)\n",
"print \"Total stock sold in first quarter: %d\\n\" %QuarterSold\n",
" \n",
"RevQuarter = QuarterSold/150*Revenue_Per_150\n",
"print \"Sales revenue this quarter is:$%.2f\\n\" %RevQuarter"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Stock sold in\n",
" Jan: 23500\n",
" Feb: 19300\n",
" Mar: 21600\n",
"\n",
"Total stock sold in first quarter: 64400\n",
"\n",
"Sales revenue this quarter is:$1930.50\n",
"\n"
]
}
],
"prompt_number": 12
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.15, page no. 68"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"first = 'T'\n",
"second = 63\n",
" \n",
"print \"The first example as a letter looks like this - \", first\n",
"print \"The first example as a number looks like this - \", ord(first)\n",
"print \"The second example as a letter looks like this - \", chr(second)\n",
"print \"The second example as a number looks like this - %d\\n\" %second"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The first example as a letter looks like this - T\n",
"The first example as a number looks like this - 84\n",
"The second example as a letter looks like this - ?\n",
"The second example as a number looks like this - 63\n",
"\n"
]
}
],
"prompt_number": 13
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.16, page no. 69"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"first = 'A'\n",
"second = 'B'\n",
"last = 'Z'\n",
"number = 40\n",
"ex1 = ord(first) + 2\n",
"ex2 = ord(second) - 1\n",
"ex3 = ord(last) + 2\n",
" \n",
"print \"Character values \\t %-5c%-5c%-5c\\n\" %(chr(ex1), chr(ex2), chr(ex3))\n",
"print \"Numerical equivalents\\t %-5d%-5d%-5d\\n\" %(ex1, ex2, ex3)\n",
"print \"The number %d is the code for the character %c\" %(number, chr(number))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Character values \t C A \\ \n",
"\n",
"Numerical equivalents\t 67 65 92 \n",
"\n",
"The number 40 is the code for the character (\n"
]
}
],
"prompt_number": 14
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Program 2.17 (combines 2.18 also), page no. 80"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"\n",
"shorty = 0.0\n",
"lofty = 0.0\n",
"feet = 0.0\n",
"inches = 0.0\n",
"shorty_to_lofty = 0.0\n",
"lofty_to_tree = 0.0\n",
"inches_per_foot = 12.0\n",
" \n",
"print \"Enter Lofty's height to the top of his/her head, in whole feet: \",\n",
"feet = float(raw_input())\n",
"print \"...and then inches: \",\n",
"inches = float(raw_input())\n",
"lofty = feet*inches_per_foot + inches\n",
"\n",
"print \"Enter Shorty's height up to his/her eyes, in whole feet: \",\n",
"feet = float(raw_input())\n",
"print \"... and then inches: \",\n",
"inches = float(raw_input())\n",
"shorty = feet*inches_per_foot + inches\n",
" \n",
"print \"Enter the distance between Shorty and Lofty, in whole feet: \",\n",
"feet = float(raw_input())\n",
"print \"... and then inches: \",\n",
"inches = float(raw_input())\n",
"shorty_to_lofty = feet*inches_per_foot + inches\n",
" \n",
"print \"Finally enter the distance from Lofty to the tree to the nearest foot: \",\n",
"feet = float(raw_input())\n",
"lofty_to_tree = feet*inches_per_foot\n",
"\n",
"\n",
"tree_height = shorty + (shorty_to_lofty + lofty_to_tree)*(lofty-shorty)/shorty_to_lofty\n",
" \n",
"print \"The height of the tree is %ld feet and %ld inches.\\n\" %(tree_height/inches_per_foot, tree_height% inches_per_foot)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter Lofty's height to the top of his/her head, in whole feet: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" ...and then inches: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Enter Shorty's height up to his/her eyes, in whole feet: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"4\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" ... and then inches: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Enter the distance between Shorty and Lofty, in whole feet: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"5\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" ... and then inches: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"0\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Finally enter the distance from Lofty to the tree to the nearest foot: "
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"20\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The height of the tree is 12 feet and 10 inches.\n",
"\n"
]
}
],
"prompt_number": 15
}
],
"metadata": {}
}
]
}