ImportError raised when using DRF 3.7.3.

[h-hirokawa]

import drf_yasg.generators raises following ImportError when the version of Django Rest Framework is 3.7.3.

/usr/lib/python3.6/site-packages/drf_yasg/generators.py in <module>()
      7 from django.utils.encoding import force_text
      8 from rest_framework import versioning
----> 9 from rest_framework.compat import URLPattern, URLResolver, get_original_route
     10 from rest_framework.schemas.generators import EndpointEnumerator as _EndpointEnumerator
     11 from rest_framework.schemas.generators import SchemaGenerator, endpoint_ordering

ImportError: cannot import name 'URLPattern'

To solve this, you must use DRF>=3.7.4.

[axnsan12]

Oops. Right, thanks for the report.