pyc pyo pyd 代表什么含义

本文解释了Python编程语言中常见文件后缀如.py, .pyc, .pyd, .pyo的含义和用途。包括源代码(.py)、编译过后的二进制代码(.pyc), 优化级文件(.pyo), 以及用于动态加载模块的.dll等效文件(.pyd)。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

本文问题来源于stackoverflow,原文链接

What does python file extensions, .pyc .pyd .pyo stand for?


这些 python 文件后缀是什么含义?

  • .pyc
  • .pyd
  • .pyo

他们之间有什么不同,他们是怎么从一个 *.py 文件产生的?


2 答案

  1. .py: 这个是你编写的源文件。
  2. .pyc: 这是编译过的二进制代码文件. 如果你导入一个模块, python 将创建一个 *.pyc 文件,文件中内为二进制码,这样可以在再次导入时更容易(更快)。
  3. .pyo: 这是一个当优化等级 (-O) 开启时生成的 *.pyc 文件。
  4. .pyd: 这个相当于一个 windows dll 文件. http://docs.python.org/faq/windows.html#is-a-pyd-file-the-same-as-a-dll

关于 .pyc 和 .pyo更深入的探讨,请移步这里: http://www.network-theory.co.uk/docs/pytut/CompiledPythonfiles.html (以下是其中比较重要的部分)

  • When the Python interpreter is invoked with the -O flag, optimized code is generated and stored in ‘.pyo’ files. The optimizer currently doesn't help much; it only removes assert statements. When -O is used, all bytecode is optimized; .pyc files are ignored and .py files are compiled to optimized bytecode.
  • Passing two -O flags to the Python interpreter (-OO) will cause the bytecode compiler to perform optimizations that could in some rare cases result in malfunctioning programs. Currently only docstrings are removed from the bytecode, resulting in more compact ‘.pyo’ files. Since some programs may rely on having these available, you should only use this option if you know what you're doing.
  • A program doesn't run any faster when it is read from a ‘.pyc’ or ‘.pyo’ file than when it is read from a ‘.py’ file; the only thing that's faster about ‘.pyc’ or ‘.pyo’ files is the speed with which they are loaded.
  • When a script is run by giving its name on the command line, the bytecode for the script is never written to a ‘.pyc’ or ‘.pyo’ file. Thus, the startup time of a script may be reduced by moving most of its code to a module and having a small bootstrap script that imports that module. It is also possible to name a ‘.pyc’ or ‘.pyo’ file directly on the command line.

 *.pyd 文件和 DLL一样吗?

是的, .pyd 文件就是 dll’, 但是有一些不同之处。 

关于这个问题的回答,python官网有详细的回答:

Yes, .pyd files are dll’s, but there are a few differences. If you have a DLL named foo.pyd, then it must have a function initfoo(). You can then write Python “import foo”, and Python will search for foo.pyd (as well as foo.py, foo.pyc) and if it finds it, will attempt to call initfoo() to initialize it. You do not link your .exe with foo.lib, as that would cause Windows to require the DLL to be present.

Note that the search path for foo.pyd is PYTHONPATH, not the same as the path that Windows uses to search for foo.dll. Also, foo.pyd need not be present to run your program, whereas if you linked your program with a dll, the dll is required. Of course, foo.pyd is required if you want to say import foo. In a DLL, linkage is declared in the source code with __declspec(dllexport). In a .pyd, linkage is defined in a list of available functions.





<think>好的,我现在需要回答用户的问题:“Python文件的拓展名是什么”。首先,我需要确认用户的问题是关于Python文件的标准扩展名。Python的源代码文件通常使用.py作为扩展名,这点我记得很清楚。不过,可能还有其他相关扩展名,比如.pyc、.pyo、.pyd等,但用户可能主要想知道的是源代码文件的扩展名。 接下来,我要检查是否有拼写错误。用户写的是“pythen”,这可能是拼写错误,正确的应该是“Python”。在回答中,我需要指出这一点,避免用户混淆。同时,要确认用户是否确实想了解Python文件的扩展名,而不是其他类似名称的技术。 然后,我需要给出正确的扩展名,即.py,并解释其用途,比如用于存储Python源代码,可以直接运行或导入。此外,可能需要提到其他相关扩展名,但应明确主次,确保用户得到最直接相关的信息。 还需要考虑用户可能的后续问题,例如如何运行.py文件,或者与其他扩展名的区别,但当前问题只需要回答扩展名即可,不过可以适当提供额外信息帮助用户更好地理解。 最后,确保回答清晰、简洁,使用中文,避免使用专业术语过多,让所有层次的用户都能理解。同时,检查是否有格式要求,比如之前提到的系统级指令,确保回答符合规范。</think>Python文件的**标准扩展名是 `.py`**。这是Python源代码文件的通用后缀,用于存储可执行的Python代码。 --- **补充说明**: 1. **常见扩展名类型**: - `.py`:标准源代码文件(可直接运行或导入) - `.pyc`:编译后的字节码文件(自动生成) - `.pyo`:优化后的字节码文件(Python 3已弃用) - `.pyd`:Windows下的Python动态链接库 - `.pyw`:Windows下无控制台窗口的Python脚本 2. **注意拼写**: - 您提到的"pythen"可能是拼写错误,正确拼写应为**Python** - 文件扩展名必须严格使用`.py`才能被Python解释器识别 --- **示例**: ```python # 保存为 hello.py 后执行: print("Hello World!") ``` 通过命令行运行: ```bash python hello.py ``` 如果需要其他特殊类型文件的说明,可以告诉我具体应用场景~ 😊
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值