How to get the file path and full file name

[perfringo]

It's unclear how code supposed to work, but there is glob:

glob.glob('*config_file*')    # returns list of matching filenames in current directory
glob.glob('*config_file*')[0] # if you are sure that there is only one matching file
glob.glob(r'D:\mainfolder\*config_file*') # should work, I am not using Windows, returns list of paths
glob.glob(r'D:\**\*config_file*', recursive=True) # search recursively in D subfolders