# HG changeset patch
# User Franz Glasner <hg@dom66.de>
# Date 1457481106 -3600
# Node ID caaaddb11db19864fd598679777ab9497c2e2955
# Parent  dc058099a4cb7776350798d8bba0285746e420f8
Evaluating Python configuration files

diff -r dc058099a4cb -r caaaddb11db1 configmix/py.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/configmix/py.py	Wed Mar 09 00:51:46 2016 +0100
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+r"""Read configuration settings from Python files
+
+"""
+
+from __future__ import division, absolute_import, print_function
+
+import locale
+
+from .compat import PY2
+
+
+__all__ = ["load"]
+
+
+def load(filename, extract=None):
+    if extract is not None:
+        if not isinstance(extract, (type([]), type(tuple()), type(set()), )):
+            raise TypeError("`extract' must be a sequence")
+    gcontext = dict()
+    lcontext = dict()
+    if PY2:
+        filename2 = filename.encode(locale.getpreferredencoding())
+    if PY2:
+        execfile(filename2, gcontext, lcontext)
+    else:
+        # "rb" mode allows Python to derive the encoding automatically
+        with open(filename, "rb") as vf:
+            code = compile(vf.read(), filename, "exec")
+            exec(code, gcontext, lcontext)
+    if extract is None:
+        if "__all__" in lcontext:
+            extract = lcontext["__all__"]
+        else:
+            extract = [k for k in lcontext if not k.startswith('_')]
+    # don't bail on non-existing keys
+    extract = [v for v in extract if v in lcontext]
+    return dict(zip(extract, [lcontext[v] for v in extract]))