fix TypeError in inspect

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [9.8.1] 0 2021-01-13
+
+### Fixed
+
+- Fixed rich.inspect failing with attributes that claim to be callable but aren't https://github.com/willmcgugan/rich/issues/916
+
 ## [9.8.0] - 2021-01-11
 
 ### Added

pyproject.toml

@@ -2,7 +2,7 @@
 name = "rich"
 homepage = "https://github.com/willmcgugan/rich"
 documentation = "https://rich.readthedocs.io/en/latest/"
-version = "9.8.0"
+version = "9.8.1"
 description = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
 authors = ["Will McGugan <willmcgugan@gmail.com>"]
 license = "MIT"

rich/_inspect.py

@@ -85,12 +85,14 @@ class Inspect(JupyterMixin):
             padding=(0, 1),
         )
 
-    def _get_signature(self, name: str, obj: Any) -> Text:
+    def _get_signature(self, name: str, obj: Any) -> Optional[Text]:
         """Get a signature for a callable."""
         try:
             _signature = str(signature(obj)) + ":"
         except ValueError:
             _signature = "(...)"
+        except TypeError:
+            return None
 
         source_filename: Optional[str] = None
         try:
@@ -142,7 +144,9 @@ class Inspect(JupyterMixin):
         highlighter = self.highlighter
 
         if callable(obj):
-            yield self._get_signature("", obj)
+            signature = self._get_signature("", obj)
+            if signature is not None:
+                yield signature
                 yield ""
 
         _doc = getdoc(obj)
@@ -178,8 +182,11 @@ class Inspect(JupyterMixin):
             if callable(value):
                 if not self.methods:
                     continue
-                _signature_text = self._get_signature(key, value)
 
+                _signature_text = self._get_signature(key, value)
+                if _signature_text is None:
+                    add_row(key_text, Pretty(value, highlighter=highlighter))
+                else:
                     if self.docs:
                         docs = getdoc(value)
                         if docs is not None:

tests/test_inspect.py

@@ -19,8 +19,8 @@ skip_py37 = pytest.mark.skipif(
 )
 
 
-def render(obj, methods=False, value=False) -> str:
-    console = Console(file=io.StringIO(), width=50, legacy_windows=False)
+def render(obj, methods=False, value=False, width=50) -> str:
+    console = Console(file=io.StringIO(), width=width, legacy_windows=False)
     inspect(obj, console=console, methods=methods, value=value)
     return console.file.getvalue()
 
@@ -183,3 +183,23 @@ def test_inspect_integer_with_methods():
         "╰────────────────────────────────────────────────╯\n"
     )
     assert expected == render(1, methods=True)
+
+
+@skip_py36
+@skip_py37
+def test_broken_call_attr():
+    class NotCallable:
+        __call__ = 5  # Passes callable() but isn't really callable
+
+        def __repr__(self):
+            return "NotCallable()"
+
+    class Foo:
+        foo = NotCallable()
+
+    foo = Foo()
+    assert callable(foo.foo)
+    expected = "╭─ <class 'tests.test_inspect.test_broken_call_attr.<locals>.Foo'> ─╮\n│ foo = NotCallable()                                               │\n╰───────────────────────────────────────────────────────────────────╯\n"
+    result = render(foo, methods=True, width=100)
+    print(repr(result))
+    assert expected == result