Reorder columns
Write a pandas program to change the order of columns. 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
Latest articles
1,677 articles · page 86 of 140Rename all columns
Write a pandas program to rename columns C1, C2, C3 to A, B, C. Step-by-step explanation, colour-coded code and real output.
Column headers
Write a pandas program to get a list of column headers. Step-by-step explanation, colour-coded code and real output.
Iterate over rows
Write a pandas program to iterate over the rows. Step-by-step explanation, colour-coded code and real output.
Add a column
Write a pandas program to add a salary column. Step-by-step explanation, colour-coded code and real output.
Delete rows
Write a pandas program to delete John's record. Step-by-step explanation, colour-coded code and real output.
Replace a value
Write a pandas program to replace John with Jim. Step-by-step explanation, colour-coded code and real output.
Sort by age
Write a pandas program to sort by age in ascending order. Step-by-step explanation, colour-coded code and real output.
Mean of a column
Write a pandas program to find the mean age. Step-by-step explanation, colour-coded code and real output.
Sort by name
Write a pandas program to sort by name in ascending order. Step-by-step explanation, colour-coded code and real output.
Add a row
Write a pandas program to add a new row. Step-by-step explanation, colour-coded code and real output.
Sum of a column
Write a pandas program to sum the age column. Step-by-step explanation, colour-coded code and real output.
Preparing for a QA interview?
Take free timed mock tests with answers and explanations.