fixed a sys.path issue disscussed in github issue #7

builtin.py

@@ -102,7 +102,7 @@ class Parser(CachedModule):
             content = {}
             exec_function('import %s as module' % name, content)
             self._module = content['module']
-            self.sys_path, sys.path = sys.path, temp
+            sys.path = temp
 
             if path:
                 self.sys_path.pop(0)

imports.py

@@ -140,7 +140,11 @@ class ImportPath(object):
                 # Override the sys.path. It works only good that way.
                 # Injecting the path directly into `find_module` did not work.
                 sys.path, temp = builtin.module_find_path, sys.path
-                i = imp.find_module(string)
+                try:
+                    i = imp.find_module(string)
+                except:
+                    sys.path = temp
+                    raise
                 sys.path = temp
                 return i