BUG: stubgen from class does not inheritd namedtuple

[matejsp]

stubgen:

class AuditContext(collections.namedtuple('AuditContext', ['user_id', 'ip'])):
  def from_request(cls, request):
     pass # somecode

generated as pyi:

class AuditContext:
    @classmethod
    def from_request(cls, request): ...

should be:

class AuditContext(collections.namedtuple('AuditContext', ['user_id', 'ip'])):
    def from_request(cls, request): ...

Your Environment

• Mypy version used: 0.971
• Mypy command-line flags: /
• Mypy configuration options from mypy.ini (and other config files): /
• Python version used: 2.8.13
• Operating system and version: MacOSX