Wrong parsing - june 15,1987 to datetime.datetime(2023, 6, 15, 0, 0)

[FluffyDietEngine]

While trying to parse the date june 15,1987, the year is getting parsed as current year instead of any year been given in this format. But adding a space after comma fixes it.

>>> from dateutil.parser import parse as du_parse
>>> dt = "june 15,1987"
>>> du_parse(dt)
datetime.datetime(2023, 6, 15, 0, 0) # wrong output
>>> dt = "june 15, 1987"
>>> du_parse(dt)
datetime.datetime(1987, 6, 15, 0, 0)# correct one

This is creating impact in dependant library, Maya as well.

>>> from maya import parse
>>> parse(dt)
<MayaDT epoch=550713600.0>
>>> parse(dt).datetime()
datetime.datetime(1987, 6, 15, 0, 0, tzinfo=<UTC>)
>>> dt = "june 15,1987"
>>> parse(dt).datetime()
datetime.datetime(2023, 6, 15, 0, 0, tzinfo=<UTC>)