urlparse with a Windows path returns the drive name as the scheme

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-10-31.00:11:40.090>
labels = ['type-bug', '3.8', 'OS-windows']
title = 'urlparse with a Windows path returns the drive name as the scheme'
updated_at = <Date 2020-10-31.00:11:40.090>
user = 'https://bugs.python.org/rangelspam'

bugs.python.org fields:

activity = <Date 2020-10-31.00:11:40.090>
actor = 'rangelspam'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Windows']
creation = <Date 2020-10-31.00:11:40.090>
creator = 'rangelspam'
dependencies = []
files = []
hgrepos = []
issue_num = 42215
keywords = []
message_count = 1.0
messages = ['380018']
nosy_count = 5.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'steve.dower', 'rangelspam']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42215'
versions = ['Python 3.8']