convert dataframe to dictionary in python code example

Example 1: how to make a pandas dataframe from a dictionary

>>> data = {'col_1': [3, 2, 1, 0], 'col_2': ['a', 'b', 'c', 'd']}
>>> pd.DataFrame.from_dict(data)

Example 2: pandas to dictionary

df.to_dict('records')

Example 3: dataframe to dict without index

df.to_dict('list')

Example 4: convert pandas dataframe to dict with a column as key

df.set_index('columnName').T.to_dict()