diff --git a/jedi/api/__init__.py b/jedi/api/__init__.py
index e31c713e..b1f13765 100644
--- a/jedi/api/__init__.py
+++ b/jedi/api/__init__.py
@@ -30,6 +30,7 @@ from jedi.evaluate import Evaluator
 from jedi.evaluate import representation as er
 from jedi.evaluate import compiled
 from jedi.evaluate import imports
+from jedi.evaluate.param import try_iter_content
 from jedi.evaluate.cache import memoize_default
 from jedi.evaluate.helpers import FakeName, get_module_names
 from jedi.evaluate.finder import global_names_dict_generator, filter_definition_names
@@ -524,32 +525,27 @@ class Script(object):
                 for o in origins if hasattr(o, 'py__call__')]
 
     def _analysis(self):
-        def check_types(types):
-            for typ in types:
-                try:
-                    f = typ.iter_content
-                except AttributeError:
-                    pass
+        self._evaluator.is_analysis = True
+        try:
+            for node in self._parser.module().nodes_to_execute():
+                if node.type in ('funcdef', 'classdef'):
+                    if node.type == 'classdef':
+                        continue
+                        raise NotImplementedError
+                    er.Function(self._evaluator, node).get_decorated_func()
+                elif isinstance(node, tree.Import):
+                    import_names = set(node.get_defined_names())
+                    if node.is_nested():
+                        import_names |= set(path[-1] for path in node.paths())
+                    for n in import_names:
+                        imports.ImportWrapper(self._evaluator, n).follow()
                 else:
-                    check_types(f())
+                    try_iter_content(self._evaluator.eval_element(node))
 
-        for node in self._parser.module().nodes_to_execute():
-            if node.type in ('funcdef', 'classdef'):
-                if node.type == 'classdef':
-                    continue
-                    raise NotImplementedError
-                er.Function(self._evaluator, node).get_decorated_func()
-            elif isinstance(node, tree.Import):
-                import_names = set(node.get_defined_names())
-                if node.is_nested():
-                    import_names |= set(path[-1] for path in node.paths())
-                for n in import_names:
-                    imports.ImportWrapper(self._evaluator, n).follow()
-            else:
-                check_types(self._evaluator.eval_element(node))
-
-        ana = [a for a in self._evaluator.analysis if self.path == a.path]
-        return sorted(set(ana), key=lambda x: x.line)
+            ana = [a for a in self._evaluator.analysis if self.path == a.path]
+            return sorted(set(ana), key=lambda x: x.line)
+        finally:
+            self._evaluator.is_analysis = False
 
 
 class Interpreter(Script):
diff --git a/jedi/evaluate/__init__.py b/jedi/evaluate/__init__.py
index 38d8de50..2a34cb85 100644
--- a/jedi/evaluate/__init__.py
+++ b/jedi/evaluate/__init__.py
@@ -89,6 +89,7 @@ class Evaluator(object):
         self.execution_recursion_detector = recursion.ExecutionRecursionDetector()
         self.analysis = []
         self.predefined_if_name_dict_dict = {}
+        self.is_analysis = False
 
     def wrap(self, element):
         if isinstance(element, tree.Class):
@@ -343,6 +344,9 @@ class Evaluator(object):
         if not isinstance(arguments, param.Arguments):
             arguments = param.Arguments(self, arguments, trailer)
 
+        if self.is_analysis:
+            arguments.eval_all()
+
         if obj.isinstance(er.Function):
             obj = obj.get_decorated_func()
 
diff --git a/jedi/evaluate/iterable.py b/jedi/evaluate/iterable.py
index e6dc2956..c6535655 100644
--- a/jedi/evaluate/iterable.py
+++ b/jedi/evaluate/iterable.py
@@ -148,7 +148,7 @@ class Comprehension(IterableWrapper):
         return [self._evaluator.eval_element(self.eval_node())[index]]
 
     def __repr__(self):
-        return "<e%s of %s>" % (type(self).__name__, self._atom)
+        return "<%s of %s>" % (type(self).__name__, self._atom)
 
 
 class ArrayMixin(object):
diff --git a/jedi/evaluate/param.py b/jedi/evaluate/param.py
index 8524bf95..2423704b 100644
--- a/jedi/evaluate/param.py
+++ b/jedi/evaluate/param.py
@@ -12,6 +12,17 @@ from jedi.evaluate.helpers import FakeName
 from jedi.cache import underscore_memoization
 
 
+def try_iter_content(types):
+    """Helper method for static analysis."""
+    for typ in types:
+        try:
+            f = typ.iter_content
+        except AttributeError:
+            pass
+        else:
+            try_iter_content(f())
+
+
 class Arguments(tree.Base):
     def __init__(self, evaluator, argument_node, trailer=None):
         """
@@ -160,6 +171,16 @@ class Arguments(tree.Base):
         else:
             return None
 
+    def eval_all(self, func=None):
+        """
+        Evaluates all arguments as a support for static analysis
+        (normally Jedi).
+        """
+        for key, element_values in self.unpack():
+            for element in element_values:
+                types = self._evaluator.eval_element(element)
+                try_iter_content(types)
+
 
 class ExecutedParam(tree.Param):
     """Fake a param and give it values."""
diff --git a/jedi/parser/tree.py b/jedi/parser/tree.py
index 79c549bb..71aa0752 100644
--- a/jedi/parser/tree.py
+++ b/jedi/parser/tree.py
@@ -517,7 +517,7 @@ class Node(BaseNode):
         For static analysis.
         """
         result = []
-        if self.type not in Node._IGNORE_EXECUTE_NODES:
+        if self.type not in Node._IGNORE_EXECUTE_NODES and not last_added:
             result.append(self)
             last_added = True