'how to merge in pandas with 4 columns

I have 2 Dataframe in pandas. I want to merge but, I need to do it by 4 columns. Somenthing like that:

DF 1:

doc, cod_doc, name, city

DF 2:

id, cod_id, income

I need doing merge for doc = id and cod_doc = cod_id.

This is my code:

f = pd.merge(customers_adress, customers_income,left_on='doc',right_on='id',how='left')

python pandas

Solution 1:^[1]

f = pd.merge(
customers_adress, customers_income, 
left_on=['doc', 'cod_doc'],
right_on=['id', 'cod_id',
how='left'
)

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Solution	Source
Solution 1	Kylian