pandas dataframe from dict If using all scalar values, you must pass an index code example
Example 1: ValueError: If using all scalar values, you must pass an index
>>> df = pd.DataFrame({'A': a, 'B': b}, index=[0])
>>> df
A B
0 2 3
Example 2: ValueError: If using all scalar values, you must pass an index
>>> df = pd.DataFrame({'A': [a], 'B': [b]})
>>> df
A B
0 2 3