SQA Tools Blog

Learn testing and automation, one article at a time

Free tutorials, solved practice problems and interview prep for QA and automation engineers: Python, Playwright, Selenium, SQL, Git and more.

1,677Articles
1,141Solved Python problems
7Topics
100%Free

Latest articles

1,677 articles · page 72 of 140
Python practice

Create A.txt to Z.txt

Write a Python program to create text files named A.txt to Z.txt. Step-by-step explanation, colour-coded code and real output.

2 min readRead →
Python practice

Count all words in a file

Write a Python program to count all the words in a file. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Copy a file in uppercase

Write a Python program to copy a file's contents to another file in uppercase. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Copy a file in lowercase

Write a Python program to copy a file's contents to another file in lowercase. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Random line from a file

Write a Python program to read a random line from a file. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Count a word in a file

Write a Python program to count how many times a word occurs in a file. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Longest word in a file

Write a Python program to find the longest word in a file. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Read lines into a list

Write a Python program to read a file line by line into a list. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

Copy odd lines to another file

Write a Python program to copy the odd-numbered lines of a file to a separate file. Step-by-step explanation, colour-coded code and real output.

2 min readRead →
Python practice

Get a specific line

Write a Python program to get a specific line (by number) from a file. Step-by-step explanation, colour-coded code and real output.

2 min readRead →
Python practice

Extract emails from a file

Write a Python program to get all email addresses from a text file. Step-by-step explanation, colour-coded code and real output.

1 min readRead →
Python practice

First three and last three lines

Write a Python program to get the first three and last three lines of a file. Step-by-step explanation, colour-coded code and real output.

2 min readRead →

Preparing for a QA interview?

Take free timed mock tests with answers and explanations.