changed the pandas util clipboard file to return unicode if the python version is 2, else str

Author: aileronajay

pandas/util/clipboard.py

@@ -138,7 +138,7 @@ def _copyGtk(text):
 
 
 def _pasteQt():
-    return str(cb.text())
+    return text_type(cb.text())
 
 
 def _copyQt(text):