from subprocess import check_output, call

file_name = str(raw_input('Enter the file name: '))

commit = check_output(["git", "rev-list", "-n", "1", "HEAD", "--", file_name])

print str(commit).rstrip()

call(["git", "checkout", str(commit).rstrip()+"~1", file_name])

"""

After entering a filename, this script searches your Git history for that file.

If the file exists, then it will restore it.

"""