Convert FOB submodule to regular folder

environments/optimizer/FOB/pytorch_fob/engine/grid_search.py

@@ -0,0 +1,32 @@
+from typing import Any
+
+
+def unique(xs: list) -> list:
+    """Returns deduplicated list"""
+    res = []
+    for x in xs:
+        if x not in res:
+            res.append(x)
+    return res
+
+
+def grid_search(d: dict[str, Any]) -> list[dict[str, Any]]:
+    ret = []
+    if isinstance(d, dict):
+        if len(d) == 0:
+            return [dict()]
+        copy = d.copy()
+        k, v = copy.popitem()
+        configs = unique(grid_search(v))
+        rest = grid_search(copy)
+        for r in rest:
+            for config in configs:
+                ret.append(r | {k: config})
+    elif isinstance(d, list):
+        for v in d:
+            configs = grid_search(v)
+            for config in configs:
+                ret.append(config)
+    else:
+        ret.append(d)
+    return ret