inner join dataframes pandas code example
Example 1: join on column pandas
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 multiple dataframes
import pandas as pd
from functools import reduce
data_frames = [df1, df2, df3]
df_merged = reduce(lambda left,right: pd.merge(left,right,on=['key_col'],
how='outer'), data_frames)
Example 4: combine two dataframe in pandas
vertical_stack = pd.concat([survey_sub, survey_sub_last10], axis=0)
horizontal_stack = pd.concat([survey_sub, survey_sub_last10], axis=1)
Example 5: join to dataframes pandas
>>> df.join(other.set_index('key'), on='key')
key A B
0 K0 A0 B0
1 K1 A1 B1
2 K2 A2 B2
3 K3 A3 NaN
4 K4 A4 NaN
5 K5 A5 NaN
Example 6: pandas join dataframe