Operator statement wrapper was missing (fixes #436)

jedi/evaluate/__init__.py

@@ -68,6 +68,7 @@ backtracking algorithm.
 
 .. todo:: nonlocal statement, needed or can be ignored? (py3k)
 """
+import copy
 import itertools
 
 from jedi._compatibility import next, hasattr, unicode
@@ -133,9 +134,10 @@ class Evaluator(object):
 
         ass_details = stmt.assignment_details
         if ass_details and ass_details[0][1] != '=' and not isinstance(stmt, er.InstanceElement):  # TODO don't check for this.
-            expr_list, operator = ass_details[0]
+            expr_list, _operator = ass_details[0]
             # `=` is always the last character in aug assignments -> -1
-            operator = operator[:-1]
+            operator = copy.copy(_operator)
+            operator.string = operator.string[:-1]
             name = str(expr_list[0].name)
             parent = stmt.parent
             if isinstance(parent, (pr.SubModule, fast.Module)):
@@ -333,7 +335,8 @@ class Evaluator(object):
         else:
             stmts = []
             if obj.isinstance(er.Function):
-                stmts = er.FunctionExecution(self, obj, params).get_return_types(evaluate_generator)
+                stmts = er.FunctionExecution(self, obj, params) \
+                          .get_return_types(evaluate_generator)
             else:
                 if hasattr(obj, 'execute_subscope_by_name'):
                     try:

jedi/evaluate/analysis.py

@@ -63,7 +63,7 @@ class Error(object):
         return hash((self.path, self._start_pos, self.name))
 
     def __repr__(self):
-        return '<%s %s: %s@%s,%s' % (self.__class__.__name__,
+        return '<%s %s: %s@%s,%s>' % (self.__class__.__name__,
                                      self.name, self.path,
                                      self._start_pos[0], self._start_pos[1])
 

jedi/parser/__init__.py

@@ -322,7 +322,6 @@ class Parser(object):
                    or tok.string in breaks and level <= 0
                    and not (in_lambda_param and tok.string in ',:')):
             try:
-                # print 'parse_stmt', tok, tokenize.tok_name[token_type]
                 is_kw = tok.string in OPERATOR_KEYWORDS
                 if tok.type == tokenize.OP or is_kw:
                     tok_list.append(

jedi/parser/representation.py

@@ -113,13 +113,13 @@ class Base(object):
     @property
     def newline(self):
         """Returns the newline type for the current code."""
-        #TODO: we need newline detection
+        # TODO: we need newline detection
         return "\n"
 
     @property
     def whitespace(self):
         """Returns the whitespace type for the current code: tab or space."""
-        #TODO: we need tab detection
+        # TODO: we need tab detection
         return " "
 
     @Python3Method
@@ -998,7 +998,7 @@ isinstance(c, tokenize.Token) else unicode(c)
         """
         def is_assignment(tok):
             return isinstance(tok, Operator) and tok.string.endswith('=') \
-                and not tok.string in ('>=', '<=', '==', '!=')
+                and tok.string not in ('>=', '<=', '==', '!=')
 
         def parse_array(token_iterator, array_type, start_pos, add_el=None):
             arr = Array(self._sub_module, start_pos, array_type, self)
@@ -1164,7 +1164,7 @@ isinstance(c, tokenize.Token) else unicode(c)
                 if is_assignment(tok):
                     # This means, there is an assignment here.
                     # Add assignments, which can be more than one
-                    self._assignment_details.append((result, tok.string))
+                    self._assignment_details.append((result, tok))
                     result = []
                     is_chain = False
                     continue
@@ -1580,6 +1580,9 @@ class Operator(Simple):
     def __repr__(self):
         return "<%s: `%s`>" % (type(self).__name__, self.string)
 
+    def __str__(self):
+        return self.get_code()
+
     def __eq__(self, other):
         """Make comparisons easy. Improves the readability of the parser."""
         return self.string == other

test/test_integration_analysis.py

@@ -0,0 +1,12 @@
+"""
+Test of keywords and ``jedi.keywords``
+"""
+from jedi import Script
+
+
+def test_issue436():
+    code = "bar = 0\nbar += 'foo' + 4"
+    errors = set(repr(e) for e in Script(code)._analysis())
+    assert len(errors) == 2
+    assert '<Error type-error-operation: None@2,4>' in errors
+    assert '<Error type-error-operation: None@2,13>' in errors