Pandas Library

  1. Combining and Reshaping Data
    1. Concatenating DataFrames
      1. concat() Function
        1. Concatenating Along Rows
          1. Concatenating Along Columns
            1. Handling Indexes During Concatenation
            2. append() Method
              1. Appending Rows
                1. Differences Between append() and concat()
              2. Merging and Joining DataFrames
                1. Database-style Joins
                  1. merge() Function
                    1. Inner Join
                      1. Left Join
                        1. Right Join
                          1. Outer Join
                            1. Merging on Multiple Keys
                              1. Handling Overlapping Column Names
                              2. Index-based Joining
                                1. join() Method
                                  1. Joining DataFrames by Index
                                2. Reshaping DataFrames
                                  1. Melting Data
                                    1. melt() Function
                                    2. Pivoting Data
                                      1. pivot() Function
                                        1. pivot_table() Function
                                        2. Stacking and Unstacking
                                          1. stack() Method
                                            1. unstack() Method
                                            2. Transposing DataFrames
                                              1. transpose() Method

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                                          5. Data Cleaning and Preparation

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                                          7. Grouping and Aggregation