Get filename from file pointer

If I have a file pointer is it possible to get the filename?

fp = open("C:\hello.txt")

Is it possible to get "hello.txt" using fp?

You can get the path via fp.name. Example:

>>> f = open('foo/bar.txt')
>>> f.name
'foo/bar.txt'

You might need os.path.basename if you want only the file name:

>>> import os
>>> f = open('foo/bar.txt')
>>> os.path.basename(f.name)
'bar.txt'

File object docs (for Python 2) here.