How do I put a parameter to a function whose return is inside a re.sub()?

Question

import re

def one_day_or_another_day_relative_to_a_date_func(m, type_of_date_unit_used):
    input_text = m.group()

    print(repr(input_text))

    if (type_of_date_unit_used == "year"): a = "YYYY-mm-dd"
    elif (type_of_date_unit_used == "month"): a = "yyyy-MM-dd"
    elif (type_of_date_unit_used == "day"): a = "yyyy-mm-DD"
    
    return a


def identify_one_day_or_another_day_relative_to_a_date(input_text, type_of_date_unit_used = "day"):
    date_capture_pattern = r"([123456789]\d*-[01]\d-[0-3]\d)(\D*?)"

    input_text = re.sub(date_capture_pattern, one_day_or_another_day_relative_to_a_date_func, input_text, re.IGNORECASE) #This is the line

    return input_text


input_text = "En 2012-06-12 empezo y termino en algun dia del 2023"
print(identify_one_day_or_another_day_relative_to_a_date(input_text, "month"))

I need to pass the parameter "month" when calling the one_day_or_another_day_relative_to_a_date_func function in the re.sub()

The output that I need with this parameter

"En yyyy-MM-dd empezo y termino en algun dia del 2023"

Answer 1

You can directly pass the parameters inside re.sub.

import re


def one_day_or_another_day_relative_to_a_date_func(m, type_of_date_unit_used):
    print(repr(m))

    if type_of_date_unit_used == "year":
        a = "YYYY-mm-dd"
    elif type_of_date_unit_used == "month":
        a = "yyyy-MM-dd"
    elif type_of_date_unit_used == "day":
        a = "yyyy-mm-DD"

    return a


def identify_one_day_or_another_day_relative_to_a_date(input_text, type_of_date_unit_used="day"):
    date_capture_pattern = r"\d{4}\-\d{2}\-\d{2}"
    pattern_matched = ''.join(re.findall(date_capture_pattern, input_text))
    input_text = re.sub(date_capture_pattern,
                        one_day_or_another_day_relative_to_a_date_func(pattern_matched, type_of_date_unit_used),
                        input_text,
                        re.IGNORECASE)  # This is the line

    return input_text


input_text = "En 2012-06-12 empezo y termino en algun dia del 2023"
print(identify_one_day_or_another_day_relative_to_a_date(input_text, "month"))
>>> '2012-06-12'
>>> En yyyy-MM-dd empezo y termino en algun dia del 2023