wip

Author: MarcoGorelli

pandas/_libs/tslibs/offsets.pyx

@@ -4712,6 +4712,7 @@ def _warn_about_deprecated_aliases(name: str, is_period: bool) -> str:
     if name == "Min":
         # Not deprecated (yet? should it be?)
         return "min"
+    print("name", name)
     if is_period:
         if name.upper() in c_PERIOD_TO_OFFSET_FREQSTR:
             if name.upper() != name:
@@ -4920,9 +4921,9 @@ cpdef to_offset(freq, bint is_period=False):
 
             tups = zip(split[0::4], split[1::4], split[2::4])
             for n, (sep, stride, name) in enumerate(tups):
-                _validate_to_offset_alias(name, is_period)
                 name = _warn_about_deprecated_aliases(name, is_period)
                 name = _lite_rule_alias.get(name, name)
+                _validate_to_offset_alias(name, is_period)
 
                 if sep != "" and not sep.isspace():
                     raise ValueError("separator must be spaces")