FileFinder.find_spec() incompatible with finder specification

[paulmar]

BPO	27276
Nosy	@paulmar

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2016-06-09.05:00:24.953>
created_at = <Date 2016-06-09.04:58:21.380>
labels = ['invalid']
title = 'FileFinder.find_spec() incompatible with finder specification'
updated_at = <Date 2016-06-09.05:00:24.952>
user = 'https://github.com/paulmar'

bugs.python.org fields:

activity = <Date 2016-06-09.05:00:24.952>
actor = 'paulmar'
assignee = 'none'
closed = True
closed_date = <Date 2016-06-09.05:00:24.953>
closer = 'paulmar'
components = []
creation = <Date 2016-06-09.04:58:21.380>
creator = 'paulmar'
dependencies = []
files = []
hgrepos = []
issue_num = 27276
keywords = []
message_count = 1.0
messages = ['267961']
nosy_count = 1.0
nosy_names = ['paulmar']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue27276'
versions = ['Python 3.5']

[paulmar]

importlib.machinery.FileFinder.find_spec is incompatible with importlib.abc.MetaPathFinder.find_spec (different number of arguments).

The following leads to a runtime error:

loader = (importlib.machinery.SourceFileLoader, importlib.machinery.SOURCE_SUFFIXES)
sys.meta_path.append(importlib.machinery.FileFinder('/', loader))