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{
"metadata": {
"name": "",
"signature": "sha256:cebcc94856d8ecdf1ae320585ba1942c4e6ccd608bed15be183214bd1392f3a2"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Hour 13: Manipulating String"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.1, Page No 210"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"str1=['A',' ','s','t','r','i','n','g',' ','c','o','n','s','t','a','n','t']\n",
"str2= \"Another string constant\"\n",
"\n",
"i=0\n",
"for ch in str1:\n",
" print ch,\n",
"print \"\"\n",
"\n",
"for ch in str2:\n",
" print ch,\n",
"\n",
"print \"\"\n",
"\n",
"#there is no concept of pointer in Python\n",
"ptr_str=\"Assign a string to a pointer\"\n",
"for ele in ptr_str:\n",
" print ele,"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" A s t r i n g c o n s t a n t \n",
"A n o t h e r s t r i n g c o n s t a n t \n",
"A s s i g n a s t r i n g t o a p o i n t e r\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.2, Page No 212"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"str1=['A',' ','s','t','r','i','n','g',' ','c','o','n','s','t','a','n','t']\n",
"str2= \"Another string constant\"\n",
"ptr_str=\"Assign a string to a pointer\"\n",
"\n",
"print \"The length of str1 is: %d bytes\\n\" % len(str1)\n",
"print \"The length of str2 is: %d bytes\\n\" % len(str2)\n",
"print \"The length of the string assigned to a pointer is: %d bytes\" % len(ptr_str)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The length of str1 is: 17 bytes\n",
"\n",
"The length of str2 is: 23 bytes\n",
"\n",
"The length of the string assigned to a pointer is: 28 bytes\n"
]
}
],
"prompt_number": 12
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.3, Page No 213"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"str1=\"Copy a string\"\n",
"str2=str1\n",
"str3=range(len(str1))\n",
"\n",
"for i in range(len(str1)):\n",
" str3[i]=str1[i]\n",
" \n",
"str3[i]='\\0'\n",
"print \"The content of str2 using strcpy: %s\" % str2\n",
"print \"The contect of str3 without using strcpy: %s\" % str3"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The content of str2 using strcpy: Copy a string\n",
"The contect of str3 without using strcpy: ['C', 'o', 'p', 'y', ' ', 'a', ' ', 's', 't', 'r', 'i', 'n', '\\x00']\n"
]
}
],
"prompt_number": 22
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.4, Page No 216"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"str1 = range(80)\n",
"delt=ord('a')-ord('A')\n",
"\n",
"str1 = raw_input(\"Enter a string less than 80 characters: \\n\")\n",
"str1 = list(str1)\n",
"i=0\n",
"while(i!=len(str1)):\n",
" if((str1[i]>='a') and (str1[i]<='z')):\n",
" str1[i] = chr(ord(str1[i])-delt)\n",
" i=i+1\n",
"print \"The entered string is (in uppercase)\\n\"\n",
"print \"\".join(str1)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter a string less than 80 characters: \n",
"This is a test.\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The entered string is (in uppercase)\n",
"\n",
"THIS IS A TEST.\n"
]
}
],
"prompt_number": 60
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.5, Page No 218"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"x=int(raw_input(\"Enter integer:\"))\n",
"y=int(raw_input(\"Enter integer:\"))\n",
"z=float(raw_input(\"Enter a floating-point number:\"))\n",
"str1=raw_input(\"Enter a string:\")\n",
"print \"Here are what you've entered\"\n",
"print \"%d \" % x,\n",
"print \"%d \" % y\n",
"print \"%f \" % z\n",
"print \"%s \" % str1"
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter integer:10\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter integer:12345\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter a floating-point number:1.234567\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter a string:Test\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are what you've entered\n",
"10 12345 \n",
"1.234567 \n",
"Test \n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
|
