Python Phrasebook

Cover......Page 1
Contents......Page 4
Introduction......Page 12
 Why Use Python?......Page 14
 Invoking the Interpreter......Page 15
 Built-In Types......Page 16
 Understanding Python Syntax......Page 21
 Python Objects, Modules, Classes, and Functions......Page 27
 Error Handling......Page 39
 Using System Tools......Page 41
 Comparing Strings......Page 48
 Joining Strings......Page 50
 Splitting Strings......Page 52
 Searching Strings for Substrings......Page 53
 Search and Replace in Strings......Page 54
 Searching Strings for Specific Endings/Beginnings......Page 55
 Trimming Strings......Page 57
 Aligning/Formatting Strings......Page 58
 Executing Code Inside Strings......Page 60
 Interpolating Variables Inside Strings......Page 61
 Converting Unicode to Local Strings......Page 63
3 Managing Data Types......Page 66
 Defining a List......Page 67
 Accessing a List......Page 68
 Slicing a List......Page 70
 Adding and Removing Items in a List......Page 72
 Sorting a List......Page 74
 Using Tuples......Page 77
 Constructing a Dictionary......Page 79
 Adding a Value to a Dictionary......Page 80
 Retrieving a Value from a Dictionary......Page 82
 Slicing a Dictionary......Page 84
 Swapping Keys for Values in a Dictionary......Page 86
 Opening and Closing Files......Page 88
 Reading an Entire File......Page 91
 Reading a Single Line from a File......Page 93
 Accessing Each Word in a File......Page 94
 Writing a File......Page 95
 Determining the Number of Lines in a File......Page 97
 Walking the Directory Tree......Page 98
 Renaming Files......Page 99
 Recursively Deleting Files and Subdirectories......Page 101
 Searching for Files Based on Extension......Page 103
 Creating a TAR File......Page 105
 Extracting a File from a TAR......Page 108
 Adding Files to a ZIP File......Page 109
 Retrieving Files from a ZIP File......Page 111
5 Managing Threads......Page 114
 Starting a New Thread......Page 115
 Creating and Exiting Threads......Page 117
 Synchronizing Threads......Page 119
 Implementing a Multithreaded Priority Queue......Page 121
 Initiating a Timer-Interrupted Thread......Page 124
6 Managing Databases......Page 128
 Adding Entries to a DBM File......Page 129
 Retrieving Entries from a DBM File......Page 131
 Updating Entries in a DBM File......Page 133
 Pickling Objects to a File......Page 135
 Unpickling Objects from a File......Page 137
 Storing Objects in a Shelve File......Page 139
 Retrieving Objects from a Shelve File......Page 142
 Changing Objects in a Shelve File......Page 144
 Connecting to a MySQL Database Server......Page 146
 Creating a MySQL Database......Page 149
 Adding Entries to a MySQL Database......Page 151
 Retrieving Entries from a MySQL Database......Page 153
 Opening a Server-Side Socket for Receiving Data......Page 156
 Opening a Client-Side Socket for Sending Data......Page 160
 Receiving Streaming Data Using the ServerSocket Module......Page 162
 Sending Streaming Data......Page 164
 Sending Email Using SMTP......Page 165
 Retrieving Email from a POP3 Server......Page 168
 Using Python to Fetch Files from an FTP Server......Page 170
8 Processing HTML......Page 174
 Parsing URLs......Page 175
 Opening HTML Documents......Page 178
 Retrieving Links from HTML Documents......Page 180
 Retrieving Images from HTML Documents......Page 182
 Retrieving Text from HTML Documents......Page 185
 Retrieving Cookies in HTML Documents......Page 187
 Adding Quotes to Attribute Values in HTML Documents......Page 190
9 Processing XML......Page 196
 Loading an XML Document......Page 197
 Checking for Well-Formed XML Documents......Page 199
 Accessing Child Nodes......Page 201
 Accessing Element Attributes......Page 205
 Adding a Node to a DOM Tree......Page 207
 Removing a Node from a DOM Tree......Page 210
 Searching XML Documents......Page 213
 Extracting Text from XML Documents......Page 216
 Parsing XML Tags......Page 219
10 Programming Web Services......Page 222
 Adding HTML to Web Pages Using CGI Scripts......Page 223
 Processing Parameters Passed to CGI Scripts......Page 225
 Creating Self-Posting CGI Scripts......Page 228
 Allowing Users to Upload Files via CGI Scripts......Page 232
 Creating an HTTP Server to Handle GET Requests......Page 235
 Creating an HTTP Server to Handle POST Requests......Page 239
 Creating an HTTP Server to Process CGI Scripts......Page 244
 Sending an HTTP GET Request from a Python Script......Page 246
 Sending an HTTP POST Request from a Python Script......Page 249
 Creating an XML-RPC Server......Page 252
 Creating an XML-RPC Client......Page 254
 Using SOAPpy to Access SOAP Web Services Through a WSDL File......Page 256
 A......Page 260
 C......Page 261
 D......Page 263
 E......Page 265
 F......Page 266
 G......Page 267
 H......Page 268
 J......Page 269
 M......Page 270
 O......Page 275
 P......Page 276
 R......Page 277
 S......Page 278
 T......Page 282
 U......Page 283
 W......Page 284
 X-Y......Page 285
 Z......Page 286