Python生成项目依赖包文件requirements.txt

方法一：使用pip freeze > requirements.txt

Microsoft Windows [版本 10.0.17763.914]
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D:devdev_pydeving>



D:devdev_pydeving>
D:devdev_pydeving>python
Python 3.7.0 (default, Jun 28 2018, 08:04:48) [MSC v.1912 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> quit()

D:devdev_pydeving>python -m pip freeze > requirements.txt

方法二：使用pipreqs

D:devdev_pydeving>
D:devdev_pydeving>
D:devdev_pydeving>python -m pip install pipreqs
Looking in indexes: http://pypi.douban.com/simple
Collecting pipreqs
  Downloading http://pypi.doubanio.com/packages/9b/83/b1560948400a07ec094a15c2f64587b70e1a5ab5f7b375ba902fcab5b6c3/pipreqs-0.4.10-py2.py3-none-any.whl
Requirement already satisfied: docopt in c:usersxhanaconda3libsite-packages (from pipreqs) (0.6.2)
Collecting yarg (from pipreqs)
  Downloading http://pypi.doubanio.com/packages/8b/90/89a2ff242ccab6a24fbab18dbbabc67c51a6f0ed01f9a0f41689dc177419/yarg-0.1.9-py2.py3-none-any.whl
Requirement already satisfied: requests in c:usersxhanaconda3libsite-packages (from yarg->pipreqs) (2.19.1)
Requirement already satisfied: idna<2.8,>=2.5 in c:usersxhanaconda3libsite-packages (from requests->yarg->pipreqs) (2.7)
Requirement already satisfied: certifi>=2017.4.17 in c:usersxhanaconda3libsite-packages (from requests->yarg->pipreqs) (2019.6.16)
Requirement already satisfied: urllib3<1.24,>=1.21.1 in c:usersxhanaconda3libsite-packages (from requests->yarg->pipreqs) (1.23)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in c:usersxhanaconda3libsite-packages (from requests->yarg->pipreqs) (3.0.4)
Installing collected packages: yarg, pipreqs
Successfully installed pipreqs-0.4.10 yarg-0.1.9
WARNING: You are using pip version 19.2.1, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

D:devdev_pydeving>pipreqs ./
Traceback (most recent call last):
  File "c:usersxhanaconda3lib
unpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:usersxhanaconda3lib
unpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:UsersXHAnaconda3Scriptspipreqs.exe\__main__.py", line 9, in <module>
  File "c:usersxhanaconda3libsite-packagespipreqspipreqs.py", line 470, in main
    init(args)
  File "c:usersxhanaconda3libsite-packagespipreqspipreqs.py", line 409, in init
    follow_links=follow_links)
  File "c:usersxhanaconda3libsite-packagespipreqspipreqs.py", line 122, in get_all_imports
    contents = f.read()
UnicodeDecodeError: 'gbk' codec can't decode byte 0xae in position 113: illegal multibyte sequence

D:devdev_pydeving>pipreqs ./ --encoding utf-8
WARNING: Requirements.txt already exists, use --force to overwrite it

D:devdev_pydeving>pipreqs ./ --encoding utf-8 --force
INFO: Successfully saved requirements file in ./requirements.txt

D:devdev_pydeving>

方法一和方法二，都可以生成requirements.txt。方法一是会将python环境中的依赖包全都加入；方法二只将项目依赖包加入。

生成 requirements.txt 后，需要安装 requirements.txt ：pip install -r requirements.txt.

以上。

参考——https://www.cnblogs.com/jclian91/p/12431215.html