add parse_config_file function
diff --git a/tcutils/__init__.py b/tcutils/__init__.py
index e69de29..e0b4cdd 100644
--- a/tcutils/__init__.py
+++ b/tcutils/__init__.py
@@ -0,0 +1,27 @@
+#-*- coding: utf-8
+import fileinput
+import os
+
+
+def parse_config_file(config_file, configs, encoding='utf-8'):
+    if not os.path.exists(config_file):
+        print u"Config file <{0}> not exists".format(config_file)
+        return False
+    if isinstance(config_file, str):
+        config_file = config_file.decode(encoding)
+
+    lineno = 0
+    for line in fileinput.input(config_file):
+        lineno += 1
+        line = line.strip(' ').rstrip('\n').rstrip('\r')
+        line = line.decode(encoding)
+        if not line:
+            continue
+        if line.startswith('#'):
+            # is comment
+            continue
+        cfg = line.partition('=')
+        if not cfg[1]:
+            raise ValueError(u"Config file line %d error" % lineno)
+        configs[cfg[0].strip(' ')] = cfg[2].lstrip(' ')
+    return True