140 - Introduction
141 - Columns in dataframes series
142 - Getting rows by their number indexes
143 - Combining data the concat function
144 - Adding columns together using the concat function
145 - Combining data by the same column name merge
146 - Understanding joins
147 - Left join returning all the rows in the left table
148 - Right join all the rows in the right table
149 - Outer join all the rows in both tables
150 - Joining tables by index the Join method
151 - Adding a new row to the dataframe
152 - Removing the duplicates
153 - Adding multiple rows to a dataframe
154 - Changing the value of existing rows update
155 - Updating rows based on a column setting the indexes
156 - Updating a dataframe with merge
157 - Summary
