The `integer_types` is always a tuple. When checking
if an instance is a number it fails because it's doing a comparison against a tuple
instead of real type.
➜ python -c "from six import integer_types;import sys;print(integer_types);print(sys.version)"
(<type 'int'>, <type 'long'>)
2.7.16 (default, Apr 6 2019, 01:42:57)
[GCC 8.3.0]
➜ python3 -c "from six import integer_types;import sys;print(integer_types);print(sys.version)"
(<class 'int'>,)
3.7.3 (default, Apr 3 2019, 05:39:12)
[GCC 8.3.0]
And spec defines a number as both int and float https://swagger.io/docs/specification/data-models/data-types/#numbers so both validators need to support both types.
`password` is a valid OpenAPIv3 string format, that is used as a UI hint
for frontend clients to mask the input field.
It was already present in the `SchemaFormat` enum, but it was not
handled in `_unmarshal_string` that uses `STRING_FORMAT_CALLABLE_GETTER`
to decide how to unmarshal a string, which would result in an error like
this one:
```
Traceback (most recent call last):
[... snip ...]
File ".venv/lib/python3.7/site-packages/openapi_core/validation/request/validators.py", line 37, in validate
body, body_errors = self._get_body(request, operation)
File ".venv/lib/python3.7/site-packages/openapi_core/validation/request/validators.py", line 82, in _get_body
body = media_type.unmarshal(raw_body, self.custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/media_types/models.py", line 45, in unmarshal
unmarshalled = self.schema.unmarshal(deserialized, custom_formatters=custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 189, in unmarshal
casted = self.cast(value, custom_formatters=custom_formatters, strict=strict)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 179, in cast
return cast_callable(value)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 295, in _unmarshal_object
value, custom_formatters=custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 335, in _unmarshal_properties
prop_value, custom_formatters=custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 189, in unmarshal
casted = self.cast(value, custom_formatters=custom_formatters, strict=strict)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 179, in cast
return cast_callable(value)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 295, in _unmarshal_object
value, custom_formatters=custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 335, in _unmarshal_properties
prop_value, custom_formatters=custom_formatters)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 189, in unmarshal
casted = self.cast(value, custom_formatters=custom_formatters, strict=strict)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 179, in cast
return cast_callable(value)
File ".venv/lib/python3.7/site-packages/openapi_core/schema/schemas/models.py", line 215, in _unmarshal_string
formatstring = self.STRING_FORMAT_CALLABLE_GETTER[schema_format]
KeyError: <SchemaFormat.PASSWORD: 'password'>
```
