Add quantize example

examples/low_level_api/quantize.py

@@ -0,0 +1,25 @@
+import os
+import argparse
+import llama_cpp
+
+
+def main(args):
+    if not os.path.exists(fname_inp):
+        raise RuntimeError(f"Input file does not exist ({fname_inp})")
+    if os.path.exists(fname_out):
+        raise RuntimeError(f"Output file already exists ({fname_out})")
+    fname_inp = args.fname_inp.encode("utf-8")
+    fname_out = args.fname_out.encode("utf-8")
+    itype = args.itype
+    return_code = llama_cpp.llama_model_quantize(fname_inp, fname_out, itype)
+    if return_code != 0:
+        raise RuntimeError("Failed to quantize model")
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("fname_inp", type=str, help="Path to input model")
+    parser.add_argument("fname_out", type=str, help="Path to output model")
+    parser.add_argument("type", type=int, help="Type of quantization (2: q4_0, 3: q4_1)")
+    args = parser.parse_args()
+    main(args)