pandas combine two columns into one code example

Example 1: python merge strings in columns

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

Example 2: pandas merge two columns from different dataframes

#suppose you have two dataframes df1 and df2, and 
#you need to merge them along the column id
df_merge_col = pd.merge(df1, df2, on='id')

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: how to merge two column pandas

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