with open("tresc_zadan/marki-samochodów.txt","r") as car_brands: regex = "(?<=" for brand in car_brands: regex += brand.removesuffix("\n") + " |" # regex[len(regex)-1] = ")" # print(regex[:len(regex)-1]) regex = regex.removesuffix("|") + ")" regex += "[A-Z][a-z\s\-A-Z]*" print(regex)