python_syntax_regular_expression

gistfile1.txt

import re

def main():
    # Email validation
    email_address = "[email protected]"
    email_pattern = r'^\w+@[a-zA-Z_]+\.[a-zA-Z]{2,3}$'

    if re.match(email_pattern, email_address):
        print("Valid email address.")
    else:
        print("Invalid email address.")

    # Extracting area code from phone number
    phone_number = "(123) 456-7890"
    phone_pattern = r'\((\d{3})\)'

    match1 = re.match(phone_pattern, phone_number)

    if match1:
        area_code = match1.group(1)
        print("Area code:", area_code)
    else:
        print("Area code not found.")

    # Extracting area code, first part, and second part from text
    text = "My phone number is (123) 456-7890."
    phone_pattern2 = r'\((\d{3})\) (\d{3})-(\d{4})'

    match = re.search(phone_pattern2, text)

    if match:
        area_code = match.group(1)
        first_part = match.group(2)
        second_part = match.group(3)

        print("Area Code:", area_code)
        print("First Part:", first_part)
        print("Second Part:", second_part)
    else:
        print("Phone number not found.")
    
    '''
    Multi-part extraction
        Month	    Month Code
        January	    F
        February	G
        March	    H
        April	    J
        May	        K
        June	    M
        July	    N
        August	    Q
        September	U
        October	    V
        November	X
        December	Z

        Examples: https://www.cmegroup.com/markets/cryptocurrencies/bitcoin/bitcoin.quotes.html#venue=globex

        BTCH24
        BTCJ24
        BTCK24
        BTCM24
        BTCN24
        BTCQ24
        BTCU24
        BTCZ24
        BTCH25
        BTCU25
        BTCZ25
    '''
    future_code = "BTCH24"
    future_code_pattern = r'^(?P<token>[A-Z]{3})(?P<futureMonthCode>[A-Z])(?P<year>\d+)+$'

    future_code_match = re.match(future_code_pattern, future_code)

    if future_code_match:
        token = future_code_match.group("token")
        month_code = future_code_match.group("futureMonthCode")
        year = int(future_code_match.group("year"))
        print(f"futureCode: {future_code}, token: {token}, monthCode: {month_code}, year: {year}")

if __name__ == "__main__":
    main()