Python Programming - Reading and Writing Files - Discussion

Discussion Forum : Reading and Writing Files - General Questions (Q.No. 33)

Reading and Writing Files

33.

How can you read and print only the lines that start with "Error:" from a log file named "logfile.txt"?

lines = open("logfile.txt").readlines()
for line in lines:
    if line.startswith("Error:"):
        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:" in line:
            print(line)

Answer: Option

Explanation:

Using startswith() to filter and print lines starting with "Error:".

Discussion:

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