Python base package filecmp is not working properly for 'UTF-8 BOM' css files.
I am using python version 3.6 and windows 10 OS.

while running the below code getting as False always.However the file content are same.

Code :

import filecmp
filecmp.clear_cache()
boolfile=filecmp.cmp(r'C:\Users\suresh.n\python\RPA\Page\Sowmiya\downloads\destination.txt',r'C:\Users\suresh.n\python\RPA\Page\Sowmiya\source\source,r'C:\Users\suresh.n\python\RPA\Page\Sowmiya\downloads.txt',shallow=False)
print(boolfile)

I think you copy-pasted that code snippet incorrectly, because it has mismatched quotes.

Can you paste the correct code?

Also, please attach both files that are not comparing equal, ideally in a ZIP file (to avoid any modifications in transit), so that we can reproduce the issue.

Please find the below Code and attached the files, expecting true as output and getting as false: 
 

"import filecmp

filecmp.clear_cache()

boolfile=filecmp.cmp(r'C:\destination.css',r'C:\source.css',shallow=False)

print(boolfile)"

Dear Team,

  Any more details are required. Kindly let me know.

The two files in "files.zip" have the same contents:

    >>> open('source.css', 'rb').read() == open('destination.css', 'rb').read()
    True

Maybe there's something peculiar about the stat results. Check that they're both reported as regular files with the same size:

    import os
    for f in ('source.css', 'destination.css'):
        print(f, os.path.isfile(f), os.path.getsize(f))

I am getting same file size and are regular files (True) as below.

Could you assist on filecmp any changes required in passing the inputs. Since it returns false.

Code: 

>>> os.chdir(r'C:\Users\suresh.n\Files')
>>> open('source.css', 'rb').read() == open('destination.css','rb').read()
True
>>> for f in ('source.css', 'destination.css'):
...         print(f, os.path.isfile(f), os.path.getsize(f))

source.css True 37465
destination.css True 37465

I'm closing this as not a bug. You showed that all of the criteria used in a non-shallow comparison are the same on your end, i.e. they're both regular files with the same reported size and the same contents. Something is going on, which is a mystery, but it's not a bug in os.stat() or filecmp.