string — Common string operations — Python 3.13.3 …
2 days ago · Format String Syntax¶ The str.format() method and the Formatter class share the same syntax for format strings (although in the case of Formatter, subclasses can define their own format string syntax). The syntax is related to that of formatted string literals, but it is less sophisticated and, in particular, does not support arbitrary ...
The Python Tutorial — Python 3.13.3 documentation
1 day ago · Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python web site ...
re — Regular expression operations — Python 3.13.3 documentation
20 hours ago · A regular expression (or RE) specifies a set of strings that matches it; the functions in this module let you check if a particular string matches a given regular expression (or if a given regular expression matches a particular string, which comes down to the same thing).
6. Expressions — Python 3.13.3 documentation
1 day ago · Python supports string and bytes literals and various numeric literals: literal::= stringliteral | bytesliteral | integer | floatnumber | imagnumber. Evaluation of a literal yields an object of the given type (string, bytes, integer, floating-point …
Built-in Functions — Python 3.13.3 documentation
1 day ago · If the argument is a string, then the string is looked up as the name of a module, function, class, method, keyword, or documentation topic, and a help page is printed on the console. If the argument is any other kind of object, a help page on the object is generated.
3. An Informal Introduction to Python
1 day ago · Strings are examples of sequence types, and support the common operations supported by such types. String Methods. Strings support a large number of methods for basic transformations and searching. f-strings. String literals that have embedded expressions. Format String Syntax. Information about string formatting with str.format().
typing — Support for type hints — Python 3.13.3 documentation
1 day ago · The Python runtime does not enforce function and variable type annotations. They can be used by third party tools such as type checkers , IDEs, linters, etc. This module provides runtime support for type hints.
2. Lexical analysis — Python 3.13.3 documentation
Escape sequences are decoded like in ordinary string literals (except when a literal is also marked as a raw string). After decoding, the grammar for the contents of the string is: f_string::= (literal_char | "{{" | "}}" | replacement_field)* replacement_field::= "{" f_expression ["="] ["!"
Built-in Types — Python 3.13.3 documentation
1 day ago · See String and Bytes literals for more about the various forms of string literal, including supported escape sequences, and the r (“raw”) prefix that disables most escape sequence processing. Strings may also be created from other objects using the str constructor.
What’s New In Python 3.8
f-strings support = for self-documenting expressions and debugging¶ Added an = specifier to f-string s. An f-string such as f'{expr=}' will expand to the text of the expression, an equal sign, then the representation of the evaluated expression. For example: