diff --git a/dynamic.py b/dynamic.py
new file mode 100644
index 00000000..c42ec298
--- /dev/null
+++ b/dynamic.py
@@ -0,0 +1,68 @@
+"""
+For dynamic completion.
+"""
+import parsing
+import evaluate
+
+# This is something like the sys.path, but only for searching params. It means
+# that this is the order in which Jedi searches params.
+search_param_modules = ['.']
+
+def search_params(param):
+    def scan_array(arr):
+        """ Returns the function Calls that match func_name """
+        result = []
+        for sub in arr:
+            for s in sub:
+                if isinstance(s, parsing.Array):
+                    result += scan_array(s)
+                elif isinstance(s, parsing.Call):
+                    if str(s.name) == func_name:
+                        result.append(s)
+        return result
+
+    def get_params_for_module(module):
+        result = []
+        try:
+            possible_stmts = current_module.used_names[func_name]
+        except KeyError:
+            return []
+
+        calls = []
+        for stmt in possible_stmts:
+            calls += scan_array(stmt.get_assignment_calls())
+
+        for c in calls:
+            if not c.execution:
+                continue
+
+            # now check if the call is actually the same method
+            c.execution, temp = None, c.execution
+            possible_executions = evaluate.follow_call(c)
+            is_same_method = False
+            for e in possible_executions:
+                is_same_method = e == func \
+                    or isinstance(e, evaluate.Function) and e.base_func == func
+            if not is_same_method:
+                continue
+            c.execution = temp
+
+            try:
+                p = c.execution[param_nr]
+            except IndexError:
+                pass
+            else:
+                result += evaluate.follow_call_list([p])
+        return result
+
+    func = param.get_parent_until(parsing.Function)
+    func_name = str(func.name)
+
+    current_module = param.get_parent_until()
+    for i, p in enumerate(func.params):
+        param_nr = i
+
+    result = get_params_for_module(current_module)
+
+    # TODO check other modules
+    return result
diff --git a/evaluate.py b/evaluate.py
index 6a48a9d3..0273b2b9 100644
--- a/evaluate.py
+++ b/evaluate.py
@@ -31,6 +31,7 @@ import debug
 import builtin
 import imports
 import helpers
+import dynamic
 
 memoize_caches = []
 statement_path = []
@@ -476,6 +477,7 @@ class Execution(Executable):
             new_param.parent = parent_stmt
             new_param._assignment_calls_calculated = True
             new_param._assignment_calls = calls
+            new_param.is_generated = True
             name = copy.copy(param.get_name())
             name.parent = new_param
             return name
@@ -887,6 +889,14 @@ def get_scopes_for_name(scope, name_str, position=None, search_global=False):
                             res_new += get_scopes_for_name(r.parent,
                                                             str(token_name))
                 else:
+                    # generated objects are used within executions, where
+                    if isinstance(r, parsing.Param) and not r.is_generated:
+                        res_new += dynamic.search_params(r)
+                        if not r.assignment_details:
+                            # this means that there are no default params, so
+                            # just ignore it.
+                            continue
+
                     scopes = follow_statement(r, seek_name=name_str)
                     res_new += remove_statements(scopes)
             else:
diff --git a/functions.py b/functions.py
index 24641d14..d4fa36ba 100644
--- a/functions.py
+++ b/functions.py
@@ -5,6 +5,7 @@ import evaluate
 import modules
 import debug
 import imports
+# TODO use os.path.sep and similar things
 import os
 
 
diff --git a/parsing.py b/parsing.py
index 3dffdd60..d67b12ed 100644
--- a/parsing.py
+++ b/parsing.py
@@ -712,6 +712,7 @@ class Statement(Simple):
             raise ParserError("Brackets don't match: %s. This is not normal "
                                 "behaviour. Please submit a bug" % level)
 
+        self._assignment_calls_calculated = True
         self._assignment_calls = top
         return top
 
@@ -729,6 +730,7 @@ class Param(Statement):
         # this is defined by the parser later on, not at the initialization
         # it is the position in the call (first argument, second...)
         self.position = None
+        self.is_generated = False
 
     def get_name(self):
         """ get the name of the param """
@@ -929,16 +931,6 @@ class Name(Simple):
     def __str__(self):
         return self.get_code()
 
-    def __eq__(self, other):
-        return self.names == other.names and self.start_pos == other.end_pos
-
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
-    def __hash__(self):
-        return hash(self.names) + hash(self.start_pos[0]) \
-                                        + hash(self.start_pos[1])
-
     def __len__(self):
         return len(self.names)
 
@@ -1276,7 +1268,10 @@ class PyFuzzyParser(object):
             self._check_user_stmt(stmt)
             if not isinstance(stmt, Param):
                 for tok_name in self.module.temp_used_names:
-                    self.module.used_names[tok_name] = stmt
+                    try:
+                        self.module.used_names[tok_name].append(stmt)
+                    except KeyError:
+                        self.module.used_names[tok_name] = [stmt]
             self.module.temp_used_names = []
         if is_return:
             # add returns to the scope
diff --git a/test/completion/dynamic.py b/test/completion/dynamic.py
new file mode 100644
index 00000000..3ea26a08
--- /dev/null
+++ b/test/completion/dynamic.py
@@ -0,0 +1,14 @@
+"""
+This is used for dynamic object completion.
+Jedi tries to guess the types with a backtracking approach.
+"""
+def func(a):
+    #? int() str()
+    return a
+
+#? int()
+func(1)
+
+func
+
+int(1) + (int(2))+ func('')
diff --git a/test/completion/ordering.py b/test/completion/ordering.py
index 4534d521..04a6b650 100644
--- a/test/completion/ordering.py
+++ b/test/completion/ordering.py
@@ -70,6 +70,12 @@ def a(a=3):
 a(2)
 #? []
 a(2).func
+
+a_param = 3
+def func(a_param):
+    # should not be int
+    #? []
+    a_param.
 # -----------------
 # class
 # -----------------