rename __temporarily_change_names -> _temporarily_change_names

Author: infmagic2047

src/sage/rings/polynomial/multi_polynomial_libsingular.pyx

@@ -1494,7 +1494,7 @@ cdef class MPolynomialRing_libsingular(MPolynomialRing_base):
         return unpickle_MPolynomialRing_libsingular, \
             (self.base_ring(), self.variable_names(), self.term_order())
 
-    def __temporarily_change_names(self, names, latex_names):
+    def _temporarily_change_names(self, names, latex_names):
         """
         This is used by the variable names context manager.
 

src/sage/structure/category_object.pyx

@@ -491,7 +491,7 @@ cdef class CategoryObject(SageObject):
         """
         return self.variable_names()[0]
 
-    def __temporarily_change_names(self, names, latex_names):
+    def _temporarily_change_names(self, names, latex_names):
         """
         This is used by the variable names context manager.
 

src/sage/structure/parent_gens.pyx

@@ -371,7 +371,7 @@ cdef class localvars:
             self._latex_names = latex_names
 
     def __enter__(self):
-        self._orig = self._obj.__temporarily_change_names(self._names, self._latex_names)
+        self._orig = self._obj._temporarily_change_names(self._names, self._latex_names)
 
     def __exit__(self, type, value, traceback):
-        self._obj.__temporarily_change_names(self._orig[0], self._orig[1])
+        self._obj._temporarily_change_names(self._orig[0], self._orig[1])