6. 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, bytes, bytearray, list, tuple, range section, and also the string-specific methods described in the String Methods section. To output formatted strings, see the String Formatting section. Also, see the re module for string functions based on regular expressions.

• 6.1. string — Common string operations
  • 6.1.1. String constants
  • 6.1.2. String Formatting
  • 6.1.3. Format String Syntax
    • 6.1.3.1. Format Specification Mini-Language
    • 6.1.3.2. Format examples
  • 6.1.4. Template strings
  • 6.1.5. Helper functions
• 6.2. re — Regular expression operations
  • 6.2.1. Regular Expression Syntax
  • 6.2.2. Matching vs Searching
  • 6.2.3. Module Contents
  • 6.2.4. Regular Expression Objects
  • 6.2.5. Match Objects
  • 6.2.6. Regular Expression Examples
    • 6.2.6.1. Checking For a Pair
    • 6.2.6.2. Simulating scanf()
    • 6.2.6.3. Avoiding recursion
    • 6.2.6.4. search() vs. match()
    • 6.2.6.5. Making a Phonebook
    • 6.2.6.6. Text Munging
    • 6.2.6.7. Finding all Adverbs
    • 6.2.6.8. Finding all Adverbs and their Positions
    • 6.2.6.9. Raw String Notation
    • 6.2.6.10. Writing a Tokenizer
• 6.3. struct — Interpret bytes as packed binary data
  • 6.3.1. Functions and Exceptions
  • 6.3.2. Format Strings
    • 6.3.2.1. Byte Order, Size, and Alignment
    • 6.3.2.2. Format Characters
    • 6.3.2.3. Examples
  • 6.3.3. Classes
• 6.4. difflib — Helpers for computing deltas
  • 6.4.1. SequenceMatcher Objects
  • 6.4.2. SequenceMatcher Examples
  • 6.4.3. Differ Objects
  • 6.4.4. Differ Example
  • 6.4.5. A command-line interface to difflib
• 6.5. textwrap — Text wrapping and filling
• 6.6. codecs — Codec registry and base classes
  • 6.6.1. Codec Base Classes
    • 6.6.1.1. Codec Objects
    • 6.6.1.2. IncrementalEncoder Objects
    • 6.6.1.3. IncrementalDecoder Objects
    • 6.6.1.4. StreamWriter Objects
    • 6.6.1.5. StreamReader Objects
    • 6.6.1.6. StreamReaderWriter Objects
    • 6.6.1.7. StreamRecoder Objects
  • 6.6.2. Encodings and Unicode
  • 6.6.3. Standard Encodings
  • 6.6.4. encodings.idna — Internationalized Domain Names in Applications
  • 6.6.5. encodings.mbcs — Windows ANSI codepage
  • 6.6.6. encodings.utf_8_sig — UTF-8 codec with BOM signature
• 6.7. unicodedata — Unicode Database
• 6.8. stringprep — Internet String Preparation