diagnose fails (path too long for Windows)

[Al Hazred]

>>> from bs4.diagnose import diagnose
>>> f=open("some_file.htm", "r", encoding="utf-8")
>>> diagnose(f.read())
Diagnostic running on Beautiful Soup 4.6.0
Python version 3.6.3 (v3.6.3:2c5fed8, Oct 3 2017, 18:11:49) [MSC v.1900 64 bit (AMD64)]
Found lxml version 3.7.3.0
Found html5lib version 1.0.1
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\<username>\AppData\Local\Programs\Python\Python36\lib\site-packages\bs4\diagnose.py", line 59, in diagnose
    elif os.path.exists(data):
  File "C:\Users\<username>\AppData\Local\Programs\Python\Python36\lib\genericpath.py", line 19, in exists
    os.stat(path)
ValueError: stat: path too long for Windows

Diagnose tries to open a file with the full content of my file as filename. This does not work on windows.

[Leonard Richardson (leonardr)]

Fixed in revision 453.