在使用pipreqs检查python项目依赖时遇到的问题

先安装 pip install pipreqs

首先执行E:\code\Hainan\RubberMeteor\webserver> pipreqs --use-local ./

报错：UnicodeDecodeError: 'gbk' codec can't decode byte 0xbf in position 2: illegal multibyte sequence

需要上--encoding=utf8 如下

E:\code\Hainan\RubberMeteor\webserver> pipreqs --use-local --encoding=utf8 --force .

如果已经存在requirements.txt，需要加上 --force 覆盖之

遇到代码开头结尾编码问题

ERROR: Failed on file: ./app.py
  File "d:\python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "d:\python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "D:\Python37\Scripts\pipreqs.exe\__main__.py", line 7, in <module>
  File "d:\python37\lib\site-packages\pipreqs\pipreqs.py", line 470, in main
    init(args)
  File "d:\python37\lib\site-packages\pipreqs\pipreqs.py", line 409, in init
    follow_links=follow_links)
  File "d:\python37\lib\site-packages\pipreqs\pipreqs.py", line 138, in get_all_imports
    raise exc
  File "d:\python37\lib\site-packages\pipreqs\pipreqs.py", line 124, in get_all_imports
    tree = ast.parse(contents)
  File "d:\python37\lib\ast.py", line 35, in parse
    return compile(source, filename, mode, PyCF_ONLY_AST)
  File "<unknown>", line 1
    # -*- coding: utf-8 -*-
    ^
SyntaxError: invalid character in identifier

重新创建一个代码文件，把代码拷贝进去，错误消失，代码分析如下：

错误代码：