remove allow_setting from cache_readonly

Author: jorisvandenbossche

pandas/_libs/properties.pyx

@@ -9,20 +9,12 @@ from cpython cimport (
 cdef class CachedProperty(object):
 
  cdef readonly:
- object func, name, __doc__, allow_setting
+ object func, name, __doc__
 
- def __init__(self, func=None, allow_setting=False):
- if func is not None:
- self.func = func
- self.name = func.__name__
- self.__doc__ = getattr(func, '__doc__', None)
- self.allow_setting = allow_setting
-
- def __call__(self, func, doc=None):
+ def __init__(self, func):
  self.func = func
  self.name = func.__name__
  self.__doc__ = getattr(func, '__doc__', None)
- return self
 
  def __get__(self, obj, typ):
  # Get the cache or set a default one if needed
@@ -42,21 +34,6 @@ cdef class CachedProperty(object):
  PyDict_SetItem(cache, self.name, val)
  return val
 
- def __set__(self, obj, value):
-
- if not self.allow_setting:
- raise Exception("cannot set values for [%s]" % self.name)
-
- # Get the cache or set a default one if needed
- cache = getattr(obj, '_cache', None)
- if cache is None:
- try:
- cache = obj._cache = {}
- except (AttributeError):
- return
-
- PyDict_SetItem(cache, self.name, value)
-
 
 cache_readonly = CachedProperty
 

pandas/core/indexes/base.py

@@ -1401,7 +1401,7 @@ def _is_strictly_monotonic_decreasing(self):
  def is_lexsorted_for_tuple(self, tup):
  return True
 
- @cache_readonly(allow_setting=True)
+ @cache_readonly
  def is_unique(self):
  """ return if the index has unique values """
  return self._engine.is_unique