[s2s] run_eval.py parses generate_kwargs (#6948)

examples/seq2seq/utils.py

@@ -5,7 +5,7 @@ import os
 import pickle
 from logging import getLogger
 from pathlib import Path
-from typing import Callable, Dict, Iterable, List
+from typing import Callable, Dict, Iterable, List, Union
 
 import git
 import numpy as np
@@ -309,3 +309,23 @@ def assert_not_all_frozen(model):
     model_grads: List[bool] = list(grad_status(model))
     npars = len(model_grads)
     assert any(model_grads), f"none of {npars} weights require grad"
+
+
+# CLI Parsing utils
+
+
+def parse_numeric_cl_kwargs(unparsed_args: List[str]) -> Dict[str, Union[int, float]]:
+    """Parse an argv list of unspecified command line args to a dict. Assumes all values are numeric."""
+    result = {}
+    assert len(unparsed_args) % 2 == 0, f"got odd number of unparsed args: {unparsed_args}"
+    num_pairs = len(unparsed_args) // 2
+    for pair_num in range(num_pairs):
+        i = 2 * pair_num
+        assert unparsed_args[i].startswith("--")
+        try:
+            value = int(unparsed_args[i + 1])
+        except ValueError:
+            value = float(unparsed_args[i + 1])  # this can raise another informative ValueError
+
+        result[unparsed_args[i][2:]] = value
+    return result