pandas concat horizontally code example

Example 1: concat dataframe from list of dataframe

import pandas as pd
df = pd.concat(list_of_dataframes)

Example 2: concat dataframe horizontally

DF1 = pd.DataFrame(columns=['col1', 'col2', 'col3'])
DF2 = pd.DataFrame(columns=['col2', 'col4', 'col5'])

pd.concat([DF1, DF2], axis = 1)