The Python Library Reference 发布 2.7.18 Guido van Rossum and the Python development team 五月 20, 2020 Python Software Foundation Email: docs@python.org Contents 1 概述 3 2 内置函数 5 3 Non-essential Built-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . 895 20.4 wsgiref —WSGI Utilities and Reference Implementation . . . . . . . . . . . . . . . . . . . . . . . 896 20.5 urllib —Open arbitrary resources Copyright 1447 Bibliography 1449 Python 模块索引 1451 索引 1457 viii The Python Library Reference, 发布 2.7.18 reference-index 描述了 Python 语言的具体语法和语义，这份库参考则介绍了与 Python 一同发行的标准库。它 还描述了通常包含在 Python 发行版中的一些可选组件。

The Python Library Reference 发布 2.7.18 Guido van Rossum and the Python development team 五月 20, 2020 Python Software Foundation Email: docs@python.org Contents 1 概述 3 2 内置函数 5 3 Non-essential Built-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . 895 20.4 wsgiref —WSGI Utilities and Reference Implementation . . . . . . . . . . . . . . . . . . . . . . . 896 20.5 urllib —Open arbitrary resources Copyright 1447 Bibliography 1449 Python 模块索引 1451 索引 1457 viii The Python Library Reference, 发布 2.7.18 reference-index 描述了 Python 语言的具体语法和语义，这份库参考则介绍了与 Python 一同发行的标准库。它 还描述了通常包含在 Python 发行版中的一些可选组件。

The Python Library Reference 发布 2.7.18 Guido van Rossum and the Python development team 五月 20, 2020 Python Software Foundation Email: docs@python.org Contents 1 概述 3 2 内置函数 5 3 Non-essential Built-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . 895 20.4 wsgiref —WSGI Utilities and Reference Implementation . . . . . . . . . . . . . . . . . . . . . . . 896 20.5 urllib —Open arbitrary resources Copyright 1447 Bibliography 1449 Python 模块索引 1451 索引 1457 viii The Python Library Reference, 发布 2.7.18 reference-index 描述了 Python 语言的具体语法和语义，这份库参考则介绍了与 Python 一同发行的标准库。它 还描述了通常包含在 Python 发行版中的一些可选组件。

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 2 API Reference 49 2.1 API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that greets NAME for a total of COUNT times.""" for x in range(count): click.echo('Hello %s!' % name) if __name__ == '__main__': hello() And what it looks like when run: $ hello --count=3 Your name: John Hello

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 2 API Reference 57 2.1 API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that NAME for a total of COUNT times.""" for x in range(count): click.echo('Hello %s!' % name) if __name__ == '__main__': hello() And what it looks like when run: $ python hello.py --count=3 Your name: John

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 2 API Reference 59 2.1 API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that NAME for a total of COUNT times.""" for x in range(count): click.echo('Hello %s!' % name) if __name__ == '__main__': hello() And what it looks like when run: $ python hello.py --count=3 Your name: John

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 2 API Reference 63 2.1 API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that NAME for a total of COUNT times.""" for x in range(count): click.echo('Hello %s!' % name) if __name__ == '__main__': hello() And what it looks like when run: $ python hello.py --count=3 Your name: John

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 2 API Reference 61 2.1 API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that NAME for a total of COUNT times.""" for x in range(count): click.echo('Hello %s!' % name) if __name__ == '__main__': hello() And what it looks like when run: $ python hello.py --count=3 Your name: John

Questions Change history What’s new in Celery 4.0 (latentcall) What’s new in Celery 3.1 (Cipater) API Reference Internals History Glossary Indices and tables Index Module Index Search Page © Copyright 2009-2016 task learn about best practices create a custom task base class add a callback to a group of tasks split a task into several chunks optimize the worker see a list of built-in task states create custom task Daemonizing Monitoring Optimizing Security Routing Configuration Django Contributing Signals FAQ API Reference Installation You can install Celery either via the Python Package Index (PyPI) or from source

The Python Library Reference 发布 3.6.15 Guido van Rossum and the Python development team 九月 05, 2021 Python Software Foundation Email: docs@python.org Contents 1 概述 3 2 内置函数 5 3 内置常量 25 3.1 由 site . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1070 21.4 wsgiref —WSGI Utilities and Reference Implementation . . . . . . . . . . . . . . . . . . . . . . . 1071 21.5 urllib —URL 处理模块 . . . Copyright 1767 Bibliography 1769 Python 模块索引 1771 索引 1775 vii viii The Python Library Reference, 发布 3.6.15 reference-index 描述了 Python 语言的具体语法和语义，这份库参考则介绍了与 Python 一同发行的标准库。它 还描述了通常包含在 Python 发行版中的一些可选组件。