import re

def pies_reg(file_path):
    licznik = 0
    with open(file_path, 'r', encoding='utf-8') as file:
        for line in file:
            licznik += 1
            if (re.search("(^|\s)pies($|\s)", line, re.IGNORECASE)):
                print(f"{licznik}: {line.strip()}")


file_path = 'TaskD02\simple.in'
pies_reg(file_path)