From eeac77d360beddbd1969830044977e23d1e51d06 Mon Sep 17 00:00:00 2001
From: Dave Halter <davidhalter88@gmail.com>
Date: Tue, 12 Aug 2014 18:09:59 +0200
Subject: [PATCH] Also support the not operator.

---
 jedi/evaluate/precedence.py      | 11 +++++++++--
 test/completion/flow_analysis.py |  4 ++--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/jedi/evaluate/precedence.py b/jedi/evaluate/precedence.py
index 8f453cae..325c186f 100644
--- a/jedi/evaluate/precedence.py
+++ b/jedi/evaluate/precedence.py
@@ -217,9 +217,11 @@ def _literals_to_types(evaluator, result):
 def calculate(evaluator, left_result, operator, right_result):
     result = []
     if left_result is None and right_result:
-        # cases like `-1` or `1 + ~1`
+        # Cases like `-1`, `1 + ~1` or `not X`.
         for right in right_result:
-            result.append(_factor_calculate(evaluator, operator, right))
+            obj = _factor_calculate(evaluator, operator, right)
+            if obj is not None:
+                result.append(obj)
         return result
     else:
         if not left_result or not right_result:
@@ -243,6 +245,11 @@ def _factor_calculate(evaluator, operator, right):
     if _is_number(right):
         if operator == '-':
             return create(evaluator, -right.obj)
+    if operator == 'not':
+        value = right.py__bool__()
+        if value is None:  # Uncertainty.
+            return None
+        return _keyword_from_value(not value)
     return right
 
 
diff --git a/test/completion/flow_analysis.py b/test/completion/flow_analysis.py
index 3cff6af0..543c40d1 100644
--- a/test/completion/flow_analysis.py
+++ b/test/completion/flow_analysis.py
@@ -117,9 +117,9 @@ else:
     a = dict
 #? dict
 a
-if (check is not check):
+if not (check is not check):
     a = 1
-#? dict
+#? int()
 a