Extract all attachments from "*.eml" email files

uneml.py

# Usage: to extract all eml files in current directory into the current directory: python uneml.py *.eml

import os
import sys
import email
import email.policy
for input_path in sys.argv[1:]:
    print('eml', repr(input_path))
    eml = email.message_from_file(open(input_path), policy = email.policy.default)
    for part in eml.walk():
        for attachment in part.iter_attachments():
            if not attachment.get_filename():
                continue
            output_filename = os.path.basename(input_path) + ' ' + attachment.get_filename()
            print('img', repr(output_filename))
            with open(output_filename, 'wb') as f:
                f.write(attachment.get_payload(decode = True))