filename pattern [datetime], extended customizable Format and Time Zone

import datetime

import pytz

import io

import math

import os

    x = x.replace("[model_hash]", getattr(p, "sd_model_hash", shared.sd_model.sd_model_hash))

    x = x.replace("[date]", datetime.date.today().isoformat())

    x = x.replace("[datetime]", datetime.datetime.now().strftime("%Y%m%d%H%M%S"))

    x = replace_datetime(x)

    x = x.replace("[job_timestamp]", getattr(p, "job_timestamp", shared.state.job_timestamp))

    # Apply [prompt] at last. Because it may contain any replacement word.^M

    return result + 1

def replace_datetime(input_str: str):

    """

    Formats sub_string of input_str with formatted datetime with time zone support.

    accepts sub_string format: [datetime], [datetime<Format>], [datetime<Format><Time Zone>]

    case insensitive

    e.g.

    input: "___[Datetime<%Y_%m_%d %H-%M-%S><Asia/Tokyo>]___"

    return: "___2022_10_22 20-40-14___"

    handles invalid Formats and Time Zones

    time format reference:

    https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes

    valid time zones

    print(pytz.all_timezones)

    https://pytz.sourceforge.net/

    """

    default_time_format = '%Y%m%d%H%M%S'

    time_now = datetime.datetime.now()

    # match all datetime to be replace

    match_itr = re.finditer(r'\[datetime(?:<([^>]*)>(?:<([^>]*)>)?)?]', input_str, re.IGNORECASE)

    for match in reversed(list(match_itr)):

        # extract format

        time_format = match.group(1)

        if time_format == '':

            # if time_format is blank use default YYYYMMDDHHMMSS

            time_format = default_time_format

        # extract timezone

        try:

            time_zone = pytz.timezone(match.group(2))

        except pytz.exceptions.UnknownTimeZoneError as _:

            # if no time_zone or invalid, use system time

            time_zone = None

        # generate time string

        time_zone_time = time_now.astimezone(time_zone)

        try:

            formatted_time = time_zone_time.strftime(time_format)

        except (ValueError, TypeError) as _:

            # if format error then use default_time_format

            formatted_time = time_zone_time.strftime(default_time_format)

        input_str = input_str[:match.start()] + formatted_time + input_str[match.end():]

    return input_str

def save_image(image, path, basename, seed=None, prompt=None, extension='png', info=None, short_filename=False, no_prompt=False, grid=False, pnginfo_section_name='parameters', p=None, existing_info=None, forced_filename=None, suffix="", save_to_dirs=None):

    '''Save an image.