Python 3.7.0a2 (default, Jul 4 2018, 12:27:36) Type 'copyright', 'credits'

Question

Python 3.7.0a2 (default, Jul 4 2018, 12:27:36) Type 'copyright', 'credits'

or 'license' for more information
IPython 6.4.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: from dataclasses import dataclass
---------------------------------------------------------------------------
ModuleNotFoundError Traceback (most recent call last)
<ipython-input-1-4fec7259c24a> in <module>()
----> 1 from dataclasses import dataclass

ModuleNotFoundError: No module named 'dataclasses'
ЧЯДНТ?