combine two columns pandas code example

Example 1: python merge strings in columns

df["period"] = df["Year"].astype(str) + df["quarter"]

Example 2: pandas dataframe add two columns int and string

df1 = df['1st Column Name'].map(str) + df['2nd Column Name'].map(str) + ...

Example 3: add two column values of a datframe into one

df["period"] = df["Year"] + df["quarter"]

Example 4: how to merge two pandas dataframes on a column

import pandas as pd
T1 = pd.merge(T1, T2, on=T1.index, how='outer')

Example 5: pandas dataframe add two columns int and string

df = df['Day'].map(str) + '-' + df['Month'].map(str) + '-' + df['Year'].map(str)

Example 6: how to merge two column pandas

DataFrame["new_column"] = DataFrame["column1"] + DataFrame["column2"]