Initial commit of Python queries and QL libraries.

python/ql/src/Statements/AssertOnTuple.py

@@ -0,0 +1,7 @@
+assert xxx and yyy   # Alternative 1a. Check both expressions are true
+
+assert xxx, yyy      # Alternative 1b. Check 'xxx' is true, 'yyy' is the failure message.
+
+tuple = (xxx, yyy)   # Alternative 2. Check both elements of the tuple match expectations.
+assert tuple[0]==xxx
+assert tuple[1]==yyy