fix download (aggiunta di nuove librerie da Alfa)

lib/future/moves/html/__init__.py

@@ -0,0 +1,31 @@
+from __future__ import absolute_import
+from future.utils import PY3
+__future_module__ = True
+
+if PY3:
+    from html import *
+else:
+    # cgi.escape isn't good enough for the single Py3.3 html test to pass.
+    # Define it inline here instead. From the Py3.4 stdlib. Note that the
+    # html.escape() function from the Py3.3 stdlib is not suitable for use on
+    # Py2.x.
+    """
+    General functions for HTML manipulation.
+    """
+
+    def escape(s, quote=True):
+        """
+        Replace special characters "&", "<" and ">" to HTML-safe sequences.
+        If the optional flag quote is true (the default), the quotation mark
+        characters, both double quote (") and single quote (') characters are also
+        translated.
+        """
+        s = s.replace("&", "&amp;") # Must be done first!
+        s = s.replace("<", "&lt;")
+        s = s.replace(">", "&gt;")
+        if quote:
+            s = s.replace('"', "&quot;")
+            s = s.replace('\'', "&#x27;")
+        return s
+
+    __all__ = ['escape']