7. String Services
******************

The modules described in this chapter provide a wide range of string
manipulation operations.

In addition, Python’s built-in string classes support the sequence
type methods described in the Sequence Types — str, unicode, list,
tuple, bytearray, buffer, xrange section, and also the string-specific
methods described in the String Methods section. To output formatted
strings use template strings or the "%" operator described in the
String Formatting Operations section. Also, see the "re" module for
string functions based on regular expressions.

* 7.1. "string" — Common string operations

  * 7.1.1. String constants

  * 7.1.2. Custom String Formatting

  * 7.1.3. Format String Syntax

    * 7.1.3.1. Format Specification Mini-Language

    * 7.1.3.2. Format examples

  * 7.1.4. Template strings

  * 7.1.5. String functions

  * 7.1.6. Deprecated string functions

* 7.2. "re" — Regular expression operations

  * 7.2.1. Regular Expression Syntax

  * 7.2.2. Module Contents

  * 7.2.3. Regular Expression Objects

  * 7.2.4. Match Objects

  * 7.2.5. Examples

    * 7.2.5.1. Checking For a Pair

    * 7.2.5.2. Simulating scanf()

    * 7.2.5.3. search() vs. match()

    * 7.2.5.4. Making a Phonebook

    * 7.2.5.5. Text Munging

    * 7.2.5.6. Finding all Adverbs

    * 7.2.5.7. Finding all Adverbs and their Positions

    * 7.2.5.8. Raw String Notation

* 7.3. "struct" — Interpret strings as packed binary data

  * 7.3.1. Functions and Exceptions

  * 7.3.2. Format Strings

    * 7.3.2.1. Byte Order, Size, and Alignment

    * 7.3.2.2. Format Characters

    * 7.3.2.3. Examples

  * 7.3.3. Classes

* 7.4. "difflib" — Helpers for computing deltas

  * 7.4.1. SequenceMatcher Objects

  * 7.4.2. SequenceMatcher Examples

  * 7.4.3. Differ Objects

  * 7.4.4. Differ Example

  * 7.4.5. A command-line interface to difflib

* 7.5. "StringIO" — Read and write strings as files

* 7.6. "cStringIO" — Faster version of "StringIO"

* 7.7. "textwrap" — Text wrapping and filling

* 7.8. "codecs" — Codec registry and base classes

  * 7.8.1. Codec Base Classes

    * 7.8.1.1. Codec Objects

    * 7.8.1.2. IncrementalEncoder Objects

    * 7.8.1.3. IncrementalDecoder Objects

    * 7.8.1.4. StreamWriter Objects

    * 7.8.1.5. StreamReader Objects

    * 7.8.1.6. StreamReaderWriter Objects

    * 7.8.1.7. StreamRecoder Objects

  * 7.8.2. Encodings and Unicode

  * 7.8.3. Standard Encodings

  * 7.8.4. Python Specific Encodings

  * 7.8.5. "encodings.idna" — Internationalized Domain Names in
    Applications

  * 7.8.6. "encodings.utf_8_sig" — UTF-8 codec with BOM signature

* 7.9. "unicodedata" — Unicode Database

* 7.10. "stringprep" — Internet String Preparation

* 7.11. "fpformat" — Floating point conversions