Python: Copy Python extractor to codeql repo

python/extractor/thrift_extractor.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+"""Run the thrift extractor locally for debugging.
+"""
+import sys
+import python_tracer
+
+if __name__ == "__main__":
+    python_tracer.load_library()
+    import semmle.thrift
+    import semmle.files
+    if len(sys.argv) != 3:
+        print("Usage %s INPUT_FOLDER TRAP_FOLDER" % sys.argv[0])
+        sys.exit(1)
+    trap_folder = semmle.files.TrapFolder(sys.argv[2])
+    extractor = semmle.thrift.Extractor(trap_folder)
+    extractor.extract_folder(sys.argv[1])