Different behavior for functiools.partial between inspect.isfunction() and other inspect.is*function()

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-02-11.15:26:49.488>
labels = ['type-bug', 'library', '3.10']
title = 'Different behavior for functiools.partial between inspect.isfunction() and other inspect.is*function()'
updated_at = <Date 2022-02-12.13:23:19.287>
user = 'https://github.com/IliyaZinoviev'

bugs.python.org fields:

activity = <Date 2022-02-12.13:23:19.287>
actor = 'IliyaZinoviev'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2022-02-11.15:26:49.488>
creator = 'IliyaZinoviev'
dependencies = []
files = ['50621']
hgrepos = []
issue_num = 46722
keywords = []
message_count = 4.0
messages = ['413077', '413111', '413127', '413128']
nosy_count = 2.0
nosy_names = ['Kevin Shweh', 'IliyaZinoviev']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue46722'
versions = ['Python 3.10']