argparse should support multiple types when nargs > 1

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-09-18.16:20:02.635>
labels = ['type-feature', 'library', '3.9']
title = 'argparse should support multiple types when nargs > 1'
updated_at = <Date 2019-09-18.16:58:43.613>
user = 'https://bugs.python.org/rgov'

bugs.python.org fields:

activity = <Date 2019-09-18.16:58:43.613>
actor = 'paul.j3'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-09-18.16:20:02.635>
creator = 'rgov'
dependencies = []
files = []
hgrepos = []
issue_num = 38217
keywords = []
message_count = 2.0
messages = ['352741', '352744']
nosy_count = 3.0
nosy_names = ['rhettinger', 'paul.j3', 'rgov']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue38217'
versions = ['Python 3.9']