How should I delete rows from a DataFrame in Python-Pandas?

Try my machine learning flashcards or Machine Learning with Python Cookbook. Dropping Rows And Columns In pandas Dataframe. 20 Dec 2017 ... Specifically: Create a new dataframe called df that includes all rows where the value of a cell in the name column does not equal “Tina”. df[df.name ! read more

When you do len(df['column name']) you are just getting one number, namely the number of rows in the DataFrame (i.e., the length of the column itself). If you want to apply len to each element in the column, use df['column name'].map(len). read more