Filter out the [[datetime]] default String from a Firefox [[Screenshot]] and move the timestamp to the front in ISO Format

Remove Firefox Screenshot Timestamps.py

#!/usr/bin/env python3
"""Remove Firefox Screenshot Timestamps.py
Filter out the [[datetime]] default String from a Firefox [[Screenshot]]

@Copyright 2022-2024 by Armin Stross-Radschinski, ACSR industrialdesign developer@acsr.de

Licence: MIT, do what you like

Have fun

V 0.1.0 20240613_125327-acsr (based on "Remove GoFullscreen Screenshot Timestamps.py" 0.1.0)

20240613_125327- by Armin Stross-Radschinski, acsr.github@dev.acsr.de for acsr/evenios
"""

import sys
import re

#example_str = "Screenshot 2024-05-31 at 15-42-45.png"

regex1 = r"\s* \d\d\d\d-\d\d-\d\d at \d\d-\d\d-\d\d\s*"
regex2 = r"\s* Screenshot \s*"  # removes Prefix "Screenshot "

subst = ""

def extract_datetime(filename):
    """We extract the machting pattern"""

    result = re.search(regex1, filename)
    if result:
        result = result.group(0).strip().replace("-", "").replace(" at ", "_")
        return result+"-"
    else:
        return ""

def remove_datetime(filename):
    """You can manually specify the number of replacements by changing the 4th argument"""

    result = re.sub(regex1, subst, filename, 1)

    if result:
        return result
    else:
        return filename

def remove_prefix(filename):
    """You can manually specify the number of replacements by changing the 4th argument"""

    result = re.sub(regex2, subst, filename, 1)

    if result:
        return result
    else:
        return filename

for filename in sys.stdin:
    datetimeprefix = extract_datetime(filename)
    croppedfilename = remove_datetime(filename)
    croppedfilename = remove_prefix(croppedfilename)
    adddatetimeprefix = datetimeprefix+croppedfilename
    print(adddatetimeprefix, end="")