fix: removed line that ignores an integer column name from _get_cleaned_column_resolvers

Also removed the changes from the previous commit, which converted integer column names to strings

Author: David-msggc

pandas/core/frame.py

@@ -4790,12 +4790,6 @@ def eval(self, expr: str, *, inplace: bool = False, **kwargs) -> Any | None:
         inplace = validate_bool_kwarg(inplace, "inplace")
         kwargs["level"] = kwargs.pop("level", 0) + 1
         index_resolvers = self._get_index_resolvers()
-
-        if any(isinstance(col, int) for col in self.columns):
-            self = self.rename(
-                columns={col: f"{col}" for col in self.columns if isinstance(col, int)}
-            )
-
         column_resolvers = self._get_cleaned_column_resolvers()
         resolvers = column_resolvers, index_resolvers
         if "target" not in kwargs:

pandas/core/generic.py

@@ -612,7 +612,6 @@ def _get_cleaned_column_resolvers(self) -> dict[Hashable, Series]:
                 v, copy=False, index=self.index, name=k, dtype=dtype
             ).__finalize__(self)
             for k, v, dtype in zip(self.columns, self._iter_column_arrays(), dtypes)
-            if not isinstance(k, int)
         }
 
     @final