pandas dataframe add two columns int and string code example

Example 1: pandas dataframe add two columns int and string

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

Example 2: add two column values of a datframe into one

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

Example 3: pandas dataframe add two columns int and string

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