updates README

Author: saxix

README.rst

@@ -53,6 +53,11 @@ Dump package version
     pytest_echo: 0.1
     plugins: echo, pydev, cov, cache, django
 
+.. warning:: The first attempt to retrieve the version is done via setuptools
+    if it fails, the module is imported (``__import__(package)``) to retrieve the version reading
+    ``get_version``, ``__version__``, ``VERSION``, ``version`` so any module
+    level code is executed. This should be not an issue as no problematic code
+    should be present in the first level of the package
 
 Dump attributes
 ~~~~~~~~~~~~~~~

pytest_echo.py

@@ -72,17 +72,18 @@ def get_module_attribute(path):
     parent = ""
     pkg = None
     try:
-        for i, el in enumerate(parts):
+        for i, part in enumerate(parts):
             try:
                 if parent:
-                    a = "%s.%s" % (parent, parts[i])
+                    module_name = "%s.%s" % (parent, parts[i])
                 else:
-                    a = parts[i]
-                pkg = __import__(a, fromlist=[parent])
-                parent = a
+                    module_name = parts[i]
+                pkg = __import__(module_name, fromlist=[parent])
+                parent = module_name
             except ImportError:
-                if hasattr(pkg, el):
+                if hasattr(pkg, part):
                     return pformat(get_attr(pkg, ".".join(parts[i:])))
+        raise Exception('Unable to load %s', path)
     except Exception as e:
         return str(e)