This Python script provides functions for converting between Unix time and human-readable date-time format.

unix_time_conversion.py

import arrow

def show_current_time():
    current_time = arrow.utcnow()
    formatted_current_time = current_time.format("YYYY-MM-DD HH:mm:ss")
    unix_time = int(current_time.timestamp())
    print(f"Current Time: {formatted_current_time}")
    print(f"Unix Time: {unix_time}")

def convert_unix_time(unix_time):
    if (
        unix_time > 1e10
    ):  # If the number is greater than 10 billion, assume it's in milliseconds
        unix_time_seconds = unix_time / 1000
    else:
        unix_time_seconds = unix_time

    timestamp = arrow.get(unix_time_seconds).to("utc")
    formatted_time = timestamp.format("YYYY-MM-DD HH:mm:ss")
    return formatted_time


def convert_to_unix_time(input_value):
    try:
        datetime_object = arrow.get(input_value, "YYYY-MM-DD HH:mm:ss").to("utc")
        min_timestamp = arrow.get("1970-01-01 00:00:00").timestamp()
        max_timestamp = 1e18  # You can set an arbitrary maximum value
        unix_time = int(
            max(min(datetime_object.timestamp(), max_timestamp), min_timestamp)
        )
        return unix_time
    except arrow.parser.ParserError:
        raise ValueError(
            'Error: Invalid date and time format. Use the format "YYYY-MM-DD HH:mm:ss".'
        )

def automatic_conversion(user_input_value):
    try:
        if user_input_value.isdigit():
            # If the input is a number, perform conversion from Unix time to date and time
            unix_time = int(user_input_value)
            converted_time = convert_unix_time(unix_time)
            print(f"Unix time entered: {unix_time}")
            print(f"Converted time: {converted_time}")
        else:
            # If the input is not a number, try conversion from date and time to Unix time
            unix_time = convert_to_unix_time(user_input_value)
            print(f"Date and time entered: {user_input_value}")
            print(f"Converted Unix time: {unix_time}")
    except ValueError as ve:
        print(f"Error: {str(ve)}")

# Display current time and Unix time
show_current_time()

# Ask the user to enter Unix time or date and time
user_input = input("Enter Unix time or date and time: ")
automatic_conversion(user_input)