Fix type annotations in pandas.core.computation (#26295)

Author: gwrome

mypy.ini

@@ -8,15 +8,6 @@ ignore_errors=True
 [mypy-pandas.core.api]
 ignore_errors=True
 
-[mypy-pandas.core.computation.expr]
-ignore_errors=True
-
-[mypy-pandas.core.computation.ops]
-ignore_errors=True
-
-[mypy-pandas.core.computation.pytables]
-ignore_errors=True
-
 [mypy-pandas.core.indexes.base]
 ignore_errors=True
 

pandas/core/computation/expr.py

@@ -7,6 +7,7 @@
 import itertools as it
 import operator
 import tokenize
+from typing import Type
 
 import numpy as np
 
@@ -327,7 +328,7 @@ class BaseExprVisitor(ast.NodeVisitor):
     parser : str
     preparser : callable
     """
-    const_type = Constant
+    const_type = Constant  # type: Type[Term]
     term_type = Term
 
     binary_ops = _cmp_ops_syms + _bool_ops_syms + _arith_ops_syms

pandas/core/computation/ops.py

@@ -149,10 +149,6 @@ def value(self, new_value):
     def name(self):
         return self._name
 
-    @name.setter
-    def name(self, new_name):
-        self._name = new_name
-
     @property
     def ndim(self):
         return self._value.ndim

pandas/core/computation/pytables.py

@@ -56,7 +56,8 @@ def _resolve_name(self):
         except UndefinedVariableError:
             return self.name
 
-    @property
+    # read-only property overwriting read/write property
+    @property  # type: ignore
     def value(self):
         return self._value