To append to a string in Python, you can use the + operator, f-strings, the join() function, or the format() function. The following examples show how

To bold text in Python, you can use ANSI escape codes or the rich library. The following examples show how to bold text in Python. Using ANSI

To calculate the average of selected rows based on criteria of a dataframe in Python, you can use the mean() function. Method: Use mean() Function dataframe.loc[condition].mean() The

To calculate the mean by group of a dataframe in Python, you can use the groupby() and mean() functions. Method: Use groupby() and mean() Functions dataframe.groupby('group')['column1'].mean() The

To capitalize a string in Python, you can use the capitalize(), upper(), or title() functions. The following examples show how to capitalize a string in Python. Using

To center text in Python, you can use the str.center() function or the format() function. The following examples show how to center text in Python. Using str.center()