生成项目的requirements编码报错

当需要生成某个项目所需要的包以及相应的版本，可以先cd到项目目录，然后输入：

pipreqs ./

报编码错误，如下：

Traceback (most recent call last):
  File "f:usersasusanaconda3librunpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "f:usersasusanaconda3librunpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "F:UsersasusAnaconda3scriptspipreqs.exe__main__.py", line 7, in 
  File "f:usersasusanaconda3libsite-packagespipreqspipreqs.py", line 470, in main
    init(args)
  File "f:usersasusanaconda3libsite-packagespipreqspipreqs.py", line 409, in init
    follow_links=follow_links)
  File "f:usersasusanaconda3libsite-packagespipreqspipreqs.py", line 122, in get_all_imports
    contents = f.read()
  File "f:usersasusanaconda3libcodecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xbb in position 570: invalid start byte

找到pipreqs.py第122行，修改编码格式为ISO-8859-1即可。

with open_func(file_name, "r", encoding='ISO-8859-1') as f:
	contents = f.read()

尝试了很多编码格式，比如gbk，gb18030等等还是报错，直到用ISO-8859-1才行。具体原因是因为decode的参数设置过于严格，设置为igonre，但是也没找到decode函数在哪里更改。后续找到了再来更改吧。