fix(mitmproxy#753): Apply suggestion

... from @mhils during mitmproxy#754

Signed-off-by: Bryant Finney <[email protected]>

pdoc/doc.py

@@ -91,15 +91,15 @@ class Doc(Generic[T]):
     qualname: str
     """
     The qualified identifier name for this object. For example, if we have the following code:
-    
+
     ```python
     class Foo:
         def bar(self):
             pass
     ```
-    
+
     The qualname of `Foo`'s `bar` method is `Foo.bar`. The qualname of the `Foo` class is just `Foo`.
-    
+
     See <https://www.python.org/dev/peps/pep-3155/> for details.
     """
 
@@ -445,7 +445,7 @@ def _taken_from(self, member_name: str, obj: Any) -> tuple[str, str]:
 
         mod = _safe_getattr(obj, "__module__", None)
         qual = _safe_getattr(obj, "__qualname__", None)
-        if mod and hasattr(qual, "__contains__") and "<locals>" not in qual:
+        if mod and isinstance(qual, str) and "<locals>" not in qual:
             return mod, qual
         else:
             # This might be wrong, but it's the best guess we have.
@@ -1051,7 +1051,7 @@ class Variable(Doc[None]):
     )  # technically Any includes empty, but this conveys intent.
     """
     The variable's default value.
-    
+
     In some cases, no default value is known. This may either be because a variable is only defined in the constructor,
     or it is only declared with a type annotation without assignment (`foo: int`).
     To distinguish this case from a default value of `None`, `pdoc.doc_types.empty` is used as a placeholder.
@@ -1060,7 +1060,7 @@ class Variable(Doc[None]):
     annotation: type | empty
     """
     The variable's type annotation.
-    
+
     If there is no type annotation, `pdoc.doc_types.empty` is used as a placeholder.
     """