[python] pandas データフレームの結合 -concat- - Qiita

import platform print('python version: ' , platform.python_version()) # python version: 3.7.8 import pandas as pd print('pandans version: ',pd.__version__) # pandans version: 1.3.5 df_1 = pd.DataFrame({'A': ['A1', 'A2', 'A3'], 'B': ['B1', 'B2', 'B3'], 'C': ['C1', 'C2', 'C3']}, index=['ONE', 'TWO', 'THREE']) print(df_1) """ A B C ONE A1 B1 C1 TWO A2 B2 C2 THREE A3 B3 C3 """ df_2 = pd.DataFrame({'C'