merge dataframe 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: joins in pandas
pd.merge(product,customer,left_on='Product_name',right_on='Purchased_Product')
Example 3: pandas merge python
import pandas as pd
df1 = pd.DataFrame({'lkey': ['foo', 'bar', 'baz', 'foo'],
'value': [1, 2, 3, 5]})
df2 = pd.DataFrame({'rkey': ['foo', 'bar', 'baz', 'foo'],
'value': [5, 6, 7, 8]})
df1.merge(df2, left_on='lkey', right_on='rkey')
Example 4: merge two columns name in one header pandas
df['A'] = df[a_cols].apply(' '.join, axis=1)
Example 5: how to merge two dataframes
df_merge_col = pd.merge(df_row, df3, on='id')
df_merge_col
Example 6: merge dataframe
In [46]: result = pd.merge(left, right, how="right", on=["key1", "key2"])