46
34
DEPRECATED_PARAMETER = "A deprecated parameter marker."
47
35
zero_seven = "%s was deprecated in version 0.7."
48
36
zero_eight = "%s was deprecated in version 0.8."
49
zero_nine = "%s was deprecated in version 0.9."
50
zero_ten = "%s was deprecated in version 0.10."
51
zero_eleven = "%s was deprecated in version 0.11."
52
zero_twelve = "%s was deprecated in version 0.12."
53
zero_thirteen = "%s was deprecated in version 0.13."
54
zero_fourteen = "%s was deprecated in version 0.14."
55
zero_fifteen = "%s was deprecated in version 0.15."
56
zero_sixteen = "%s was deprecated in version 0.16."
57
zero_seventeen = "%s was deprecated in version 0.17."
58
zero_eighteen = "%s was deprecated in version 0.18."
59
zero_nineteen = "%s was deprecated in version 0.19."
62
39
def set_warning_method(method):
73
50
# add that on top of the primitives, once we have all three written
77
def deprecation_string(a_callable, deprecation_version):
78
"""Generate an automatic deprecation string for a_callable.
80
:param a_callable: The callable to substitute into deprecation_version.
81
:param deprecation_version: A deprecation format warning string. This should
82
have a single %s operator in it. a_callable will be turned into a nice
83
python symbol and then substituted into deprecation_version.
85
if getattr(a_callable, 'im_class', None) is None:
86
symbol = "%s.%s" % (a_callable.__module__,
89
symbol = "%s.%s.%s" % (a_callable.im_class.__module__,
90
a_callable.im_class.__name__,
93
return deprecation_version % symbol
96
53
def deprecated_function(deprecation_version):
97
54
"""Decorate a function so that use of it will trigger a warning."""
102
59
def decorated_function(*args, **kwargs):
103
60
"""This is the decorated function."""
104
warn(deprecation_string(callable, deprecation_version),
105
DeprecationWarning, stacklevel=2)
61
symbol = "%s.%s" % (callable.__module__,
64
warn(deprecation_version % symbol, DeprecationWarning, stacklevel=2)
106
65
return callable(*args, **kwargs)
107
66
_populate_decorated(callable, deprecation_version, "function",
108
67
decorated_function)
184
140
decorated_callable.__module__ = callable.__module__
185
141
decorated_callable.__name__ = callable.__name__
186
142
decorated_callable.is_deprecated = True
189
def _dict_deprecation_wrapper(wrapped_method):
190
"""Returns a closure that emits a warning and calls the superclass"""
191
def cb(dep_dict, *args, **kwargs):
192
msg = 'access to %s' % (dep_dict._variable_name, )
193
msg = dep_dict._deprecation_version % (msg,)
195
msg += ' ' + dep_dict._advice
196
warn(msg, DeprecationWarning, stacklevel=2)
197
return wrapped_method(dep_dict, *args, **kwargs)
201
class DeprecatedDict(dict):
202
"""A dictionary that complains when read or written."""
212
"""Create a dict that warns when read or modified.
214
:param deprecation_version: something like zero_nine
215
:param initial_value: The contents of the dict
216
:param variable_name: This allows better warnings to be printed
217
:param advice: String of advice on what callers should do instead
218
of using this variable.
220
self._deprecation_version = deprecation_version
221
self._variable_name = variable_name
222
self._advice = advice
223
dict.__init__(self, initial_value)
225
# This isn't every possible method but it should trap anyone using the
226
# dict -- add more if desired
227
__len__ = _dict_deprecation_wrapper(dict.__len__)
228
__getitem__ = _dict_deprecation_wrapper(dict.__getitem__)
229
__setitem__ = _dict_deprecation_wrapper(dict.__setitem__)
230
__delitem__ = _dict_deprecation_wrapper(dict.__delitem__)
231
keys = _dict_deprecation_wrapper(dict.keys)
232
__contains__ = _dict_deprecation_wrapper(dict.__contains__)
235
def deprecated_list(deprecation_version, variable_name,
236
initial_value, extra=None):
237
"""Create a list that warns when modified
239
:param deprecation_version: something like zero_nine
240
:param initial_value: The contents of the list
241
:param variable_name: This allows better warnings to be printed
242
:param extra: Extra info to print when printing a warning
245
subst_text = 'Modifying %s' % (variable_name,)
246
msg = deprecation_version % (subst_text,)
250
class _DeprecatedList(list):
251
__doc__ = list.__doc__ + msg
255
def _warn_deprecated(self, func, *args, **kwargs):
256
warn(msg, DeprecationWarning, stacklevel=3)
257
return func(self, *args, **kwargs)
259
def append(self, obj):
260
"""appending to %s is deprecated""" % (variable_name,)
261
return self._warn_deprecated(list.append, obj)
263
def insert(self, index, obj):
264
"""inserting to %s is deprecated""" % (variable_name,)
265
return self._warn_deprecated(list.insert, index, obj)
267
def extend(self, iterable):
268
"""extending %s is deprecated""" % (variable_name,)
269
return self._warn_deprecated(list.extend, iterable)
271
def remove(self, value):
272
"""removing from %s is deprecated""" % (variable_name,)
273
return self._warn_deprecated(list.remove, value)
275
def pop(self, index=None):
276
"""pop'ing from from %s is deprecated""" % (variable_name,)
278
return self._warn_deprecated(list.pop, index)
281
return self._warn_deprecated(list.pop)
283
return _DeprecatedList(initial_value)