Initial commit of Python queries and QL libraries.

python/ql/src/Classes/ShouldBeContextManager.py

@@ -0,0 +1,33 @@
+class remotelock(object):     # Resources can be released using __del__
+
+    def __init__(self, repo):
+        self.repo = repo
+
+    def release(self):
+        self.repo.unlock()
+        self.repo = None
+
+    def __del__(self):
+        if self.repo:
+            self.release()
+
+
+class remotelock2(object):     # Resources can be released using a with statement
+
+    def __init__(self, repo):
+        self.repo = repo
+
+    def __enter__(self):
+        return self
+
+    def release(self):
+        self.repo.unlock()
+        self.repo = None
+        
+    def __del__(self):
+        if self.repo:
+            self.release()
+
+    def __exit__(self, exct_type, exce_value, traceback):
+        if self.repo:
+            self.release()