python create dict from dataframe columns code example

Example 1: dataframe to dictionary with one column as key

pd.Series(df.A.values,index=df.B).to_dict()

Example 2: create a dataframe from dict

create a dataframe from dict (function)

import pandas as pd
def create_df():
    data = {'col_1': [3, 2, 1, 0], 'col_2': ['a', 'b', 'c', 'd']}
    return pd.DataFrame.from_dict(data)
create_df()