Opening the paper…
Tools in Data Science, End Term
You have a spreadsheet with values containing leading zeros (e.g., "001234"). What's the most effective way to preserve these zeros during Text-to-Columns?
You have a spreadsheet with values containing leading zeros (e.g., "001234"). What's the most effective way to preserve these zeros during Text-to-Columns? What is the correct order of execution in a Python try-except-finally block if no exception occurs? A data scientist needs to count non-null values in each column of a DataFrame. Which pandas method should they use?