join columns pandas code example

Example 1: join on column pandas

# df1 as main df and use the feild from df2 and map it into df1

df1.merge(df2,on='columnName',how='left')

Example 2: combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])

Example 3: join dataframe pandas by column

df_merge_col = pd.merge(df_row, df3, on='id')

df_merge_col