merge string 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"]