Python Programming - Reading and Writing Files - Discussion

with open("logfile.txt", "r") as file:
    lines = file.readlines()
    for line in lines:
        if "error" in line.lower():
            print(line)

print_error_lines("logfile.txt")

with open("logfile.txt", "r") as file:
    print(file.read("error"))

with open("logfile.txt", "r") as file:
    for line in file:
        if "error".casefold() in line:
            print(line)