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.
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
Python practice articles
1,137 articles · page 28 of 95 · Clear filtersCopy 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.
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.
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.
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.
Append to a file
Write a Python program to append data to an existing file. Step-by-step explanation, colour-coded code and real output.
Overwrite a file
Write a Python program to overwrite the content of an existing file. Step-by-step explanation, colour-coded code and real output.
Read a file in read mode
Write a Python program to read a file in reading mode. Step-by-step explanation, colour-coded code and real output.
All permutations of a string
Write a Python function that returns all permutations of a string, without itertools. Step-by-step explanation, colour-coded code and real output.
Integer to words
Write a Python function that converts an integer from 0 to 999 into English words. Step-by-step explanation, colour-coded code and real output.
Validate a mobile number
Write a Python function to check whether a mobile number is valid: 10 digits starting with 6, 7, 8 or 9 (optionally with...
Length of the last word
Write a Python function that returns the length of the last word in a string. Step-by-step explanation, colour-coded code and real output.
Preparing for a QA interview?
Take free timed mock tests with answers and explanations.