Make sure warnings are not shown if a property is executed, fixes #1383

jedi/inference/compiled/access.py

@@ -4,6 +4,7 @@ import types
 import sys
 import operator as op
 from collections import namedtuple
+import warnings
 
 from jedi._compatibility import unicode, is_py3, builtins, \
     py_version, force_unicode
@@ -350,7 +351,11 @@ class DirectObjectAccess(object):
 
     def getattr_paths(self, name, default=_sentinel):
         try:
-            return_obj = getattr(self._obj, name)
+            # Make sure no warnings are printed here, this is autocompletion,
+            # warnings should not be shown. See also GH #1383.
+            with warnings.catch_warnings(record=True):
+                warnings.simplefilter("always")
+                return_obj = getattr(self._obj, name)
         except Exception as e:
             if default is _sentinel:
                 if isinstance(e, AttributeError):

test/test_api/test_interpreter.py

@@ -2,6 +2,7 @@
 Tests of ``jedi.api.Interpreter``.
 """
 import sys
+import warnings
 
 import pytest
 
@@ -197,6 +198,20 @@ def test_getitem_side_effects():
     _assert_interpreter_complete('foo["asdf"].upper', locals(), ['upper'])
 
 
+@pytest.mark.parametrize('stacklevel', [1, 2])
+@pytest.mark.filterwarnings("error")
+def test_property_warnings(stacklevel):
+    class Foo3:
+        @property
+        def prop(self):
+            # Possible side effects here, should therefore not call this.
+            warnings.warn("foo", DeprecationWarning, stacklevel=stacklevel)
+            return ''
+
+    foo = Foo3()
+    _assert_interpreter_complete('foo.prop.uppe', locals(), ['upper'])
+
+
 @pytest.fixture(params=[False, True])
 def allow_descriptor_access_or_not(request, monkeypatch):
     monkeypatch.setattr(jedi.Interpreter, '_allow_descriptor_getattr_default', request.param)