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dataclasses â Data Classes¶ Source code: Lib/dataclasses.py This module provides a decorator and functions for automatically adding generated special methods such as __init__() and __repr__() to user-defined classes. It was originally described in PEP 557. The member variables to use in these generated methods are defined using PEP 526 type annotations. For example, this code: from dataclasses imp
Source code: Lib/pathlib/ This module offers classes representing filesystem paths with semantics appropriate for different operating systems. Path classes are divided between pure paths, which provide purely computational operations without I/O, and concrete paths, which inherit from pure paths but also provide I/O operations. If youâve never used this module before or just arenât sure which clas
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Deprecated since version 3.10, removed in version 3.12. This module is no longer part of the Python standard library. It was removed in Python 3.12 after being deprecated in Python 3.10. The removal was decided in PEP 632, which has migration advice. The last version of Python that provided the distutils module was Python 3.11.
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1. Extending Python with C or C++¶ It is quite easy to add new built-in modules to Python, if you know how to program in C. Such extension modules can do two things that canât be done directly in Python: they can implement new built-in object types, and they can call C library functions and system calls. To support extensions, the Python API (Application Programmers Interface) defines a set of fun
String constants¶ The constants defined in this module are: string.ascii_letters¶ The concatenation of the ascii_lowercase and ascii_uppercase constants described below. This value is not locale-dependent. string.ascii_lowercase¶ The lowercase letters 'abcdefghijklmnopqrstuvwxyz'. This value is not locale-dependent and will not change. string.ascii_uppercase¶ The uppercase letters 'ABCDEFGHIJKLMNO
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