A question in the first guided project

When I typed this code del data_set_playstore[10473], I pressed Restart & Run All many times, but I noticed that the length of the google play data set didn’t change, why?

The mission link

Hello @Maho,

Put a line of code that prints the length of the dataset after the delete statement.
Can you please share your code?

del android_data[10472]  # don't run this more than once so you dont delete multiple rows

Use this code above. It shows you the length of the data set before and after deletion. That way you know if it worked.