Bringing it all together (3)

In the previous exercise, you built on your function count_entries() to add a try-except block. This was so that users would get helpful messages when calling your count_entries() function and providing a column name that isn't in the DataFrame. In this exercise, you'll instead raise a ValueError in the case that the user provides a column name that isn't in the DataFrame.

Once again, for your convenience, pandas has been imported as pd and the 'tweets.csv' file has been imported into the DataFrame tweets_df. Parts of the code from your previous work are also provided.

If col_name is not a column in the DataFrame df, raise a ValueError 'The DataFrame does not have a ' + col_name + ' column.'.
Call your new function count_entries() to analyze the 'lang' column of tweets_df. Store the result in result1.
Print result1. This has been done for you, so hit 'Submit Answer' to check out the result. In the next exercise, you'll see that it raises the necessary ValueErrors.

Exercise

Bringing it all together (3)

Instructions