python 只导出项目依赖包

平时导出依赖通常都是 pip freeze >  requirements.txt  

这种方式导出的是当前python环境中全部的包，只会多不会少，有些库不是必需的也跟着导出来，冗余太重。

这个时候  pipreqs 这个库就派上用场了，它只会导出当前项目运行所依赖的包，环境中多余的库就不会导出，在迁移环境时候不多方便。

pip install pipreqs

使用的时候也很简单，进入项目的根目录

pipreqs ./

等待一会就会生成一个 requirements.txt  文件

D:\PyPt\2018\ElasticSearch_New>pipreqs ./ Traceback (most recent call last): File "d:\anaconda3\lib\runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "d:\anaconda3\lib\runpy.py", line 85, in _run_code exec(code, run_globals) File "D:\Anaconda3\Scripts\pipreqs.exe\__main__.py", line 9, in <module> File "d:\anaconda3\lib\site-packages\pipreqs\pipreqs.py", line 396, in main init(args) File "d:\anaconda3\lib\site-packages\pipreqs\pipreqs.py", line 341, in init extra_ignore_dirs=extra_ignore_dirs) File "d:\anaconda3\lib\site-packages\pipreqs\pipreqs.py", line 75, in get_all_ imports contents = f.read() UnicodeDecodeError: 'gbk' codec can't decode byte 0x8d in position 232: illegal
multibyte sequence

 

报错的时候须要调整下文件编码  直接修改pipreqs.py 的75行，将encoding改成'utf-8'

D:\PyPt\2018\ElasticSearch_New>pipreqs ./ INFO: Successfully saved requirements file in ./requirements.txt D:\PyPt\2018\ElasticSearch_New>