I have different pandas dataframes, which I put in a list. I want to save this list in json (or any other format) which can be read by R. import pandas as pd def create_df_predictions(extra_periods): """ make a empty df for predictions params: extra_periods = how many prediction in the future the user wants """ df = pd.DataFrame({ 'model': ['a'], 'name_id': ['a'] }) for col in range(1, extra_periods+1): name_col = 'forecast' + str(col) df[name_col] = 0 return df df1 = create_df_predictions(9) df2 = create_df_predictions(12) list_df = [df1, df2] The question is how to save list_df in a readable format for R? Note that df1 and df2 are have a different amount of columns! Continue reading...