This prevents any further releases from being mistakenly installed on Python 3.5 (which does not support the syntax involved) or 3.7 (which has dataclasses in the standard library). The damage is already done though and the fix will only apply to future releases.
This prevents any further releases from being mistakenly installed on Python 3.5 (which does not support the syntax involved) or 3.7 (which has dataclasses in the standard library). The damage is already done though and the fix will only apply to future releases.