added ensure_unicode utility function

pym/calculate/lib/utils/common.py

@@ -98,6 +98,15 @@ def getpathenv():
     envPath = set(env.get('PATH', '').split(":")) | bindir
     return ":".join(envPath)
 
+#decorator
+def ensure_unicode(func):
+    def _ensure_unicode_wrapper(*args, **kwargs):
+        args = [x if not isinstance(x, bytes) else x.decode("UTF-8") for x in args]
+        for x in kwargs:
+            if isinstance(kwargs[x], bytes):
+                kwargs[x] = kwargs[x].decode("UTF-8")
+        return func(*args, **kwargs)
+    return _ensure_unicode_wrapper
 
 from .files import process, listDirectory