1 files changed, 32 insertions, 0 deletions
diff --git a/pre_commit_hooks/check_ast.py b/pre_commit_hooks/check_ast.py
new file mode 100644
index 0000000..ab5661d
--- /dev/null
+++ b/pre_commit_hooks/check_ast.py
@@ -0,0 +1,32 @@
+import argparse
+import ast
+import platform
+import sys
+import traceback
+from typing import Optional
+from typing import Sequence
+
+
+def main(argv: Optional[Sequence[str]] = None) -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('filenames', nargs='*')
+    args = parser.parse_args(argv)
+
+    retval = 0
+    for filename in args.filenames:
+
+        try:
+            with open(filename, 'rb') as f:
+                ast.parse(f.read(), filename=filename)
+        except SyntaxError:
+            impl = platform.python_implementation()
+            version = sys.version.split()[0]
+            print(f'{filename}: failed parsing with {impl} {version}:')
+            tb = '    ' + traceback.format_exc().replace('\n', '\n    ')
+            print(f'\n{tb}')
+            retval = 1
+    return retval
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())