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Built-in Functions — Python 3.12.3 documentation

Webawaitable anext (async_iterator) ¶ awaitable anext (async_iterator, default). When awaited, return the next item from the given asynchronous iterator, or default if …

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URL: https://docs.python.org/3/library/functions.html

4. More Control Flow Tools — Python 3.12.3 documentation

Web4. More Control Flow Tools¶. As well as the while statement just introduced, Python uses a few more that we will encounter in this chapter.. 4.1. if Statements¶. …

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The Python Language Reference — Python 3.12.3 documentation

WebThis reference manual describes the syntax and “core semantics” of the language. It is terse, but attempts to be exact and complete. The semantics of non …

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3. An Informal Introduction to Python

WebThe integer numbers (e.g. 2, 4, 20) have type int, the ones with a fractional part (e.g. 5.0, 1.6) have type float.We will see more about numeric types later in the tutorial. …

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Python Development Mode — Python 3.12.3 documentation

WebThe Python Development Mode introduces additional runtime checks that are too expensive to be enabled by default. It should not be more verbose than the default if …

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The Python Profilers — Python 3.12.3 documentation

WebIntroduction to the profilers¶. cProfile and profile provide deterministic profiling of Python programs. A profile is a set of statistics that describes how often and for how …

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10. Brief Tour of the Standard Library — Python 3.12.3 …

WebIn contrast to timeit ’s fine level of granularity, the profile and pstats modules provide tools for identifying time critical sections in larger blocks of code.. 10.11. Quality Control¶. One …

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queue — A synchronized queue class — Python 3.12.3 …

WebThe queue module implements multi-producer, multi-consumer queues. It is especially useful in threaded programming when information must be exchanged safely …

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Python support for the Linux perf profiler

WebPython support for the Linux perf profiler¶ author:. Pablo Galindo. The Linux perf profiler is a very powerful tool that allows you to profile and obtain information about …

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pty — Pseudo-terminal utilities — Python 3.12.3 documentation

Webpty. openpty ¶ Open a new pseudo-terminal pair, using os.openpty() if possible, or emulation code for generic Unix systems. Return a pair of file descriptors (master, …

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asyncio — Asynchronous I/O — Python 3.12.3 documentation

Webasyncio is a library to write concurrent code using the async/await syntax. asyncio is used as a foundation for multiple Python asynchronous frameworks that …

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wave — Read and write WAV files — Python 3.12.3 documentation

WebThe wave module defines the following function and exception:. wave. open (file, mode = None) ¶ If file is a string, open the file by that name, otherwise treat it as a file …

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Operating System Utilities — Python 3.12.3 documentation

WebOperating System Utilities. ¶. PyObject *PyOS_FSPath(PyObject *path) ¶. Return value: New reference. Part of the Stable ABI since version 3.6. Return the file …

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os — Miscellaneous operating system interfaces — Python 3.12.3

WebThis module provides a portable way of using operating system dependent functionality. If you just want to read or write a file see open(), if you want to manipulate paths, see the …

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xmlrpc — XMLRPC server and client modules — Python 3.12.3 …

WebXML-RPC is a Remote Procedure Call method that uses XML passed via HTTP as a transport. With it, a client can call methods with parameters on a remote …

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csv — CSV File Reading and Writing — Python 3.12.3 documentation

WebThe so-called CSV (Comma Separated Values) format is the most common import and export format for spreadsheets and databases. CSV format was used for …

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Python Module Index — Python 3.12.3 documentation

WebA binary module that contains the low-level interface to Tcl/Tk. Abstract base classes according to :pep:`3119`. Deprecated: Read and write audio files in AIFF or …

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9. 类 — Python 3.12.3 文档

Web注意,局部 赋值(这是默认状态)不会改变 scope_test 对 spam 的绑定。 nonlocal 赋值会改变 scope_test 对 spam 的绑定,而 global 赋值会改变模块层级的绑定。. 而且, global …

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