Code Sample, a copy-pastable example if possible

expected = pd.DataFrame({'a':[5,5]}, index=[1.,2.]) result = pd.read_json(expected.to_json(orient='table'), orient='table')

In [141]: expected Out[141]: a 1.0 5 2.0 5 In [142]: result Out[142]: a 1 5 2 5 

Problem description

Round trip should recover the original DataFrame. But the result index has been cast from float to integer.

Expected Output

The same as expected.

Output of pd.show_versions()