added Logger class

Author: audiofeature

Logger.py

@@ -0,0 +1,18 @@
+
+# adapted from http://stackoverflow.com/questions/616645/how-do-i-duplicate-sys-stdout-to-a-log-file-in-python
+
+import sys
+
+class Logger(object):
+    def __init__(self, filename=None):
+        self.filename = filename
+        self.terminal = sys.stdout
+        if self.filename is not None:
+            self.log = open(filename, "a")
+
+    def write(self, message):
+        self.terminal.write(message)
+        if self.filename != None:
+            self.log.write(message)
+
+sys.stdout = Logger()