bpo-1617161: Make the hash and equality of methods not depending on the value of self.#7848
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serhiy-storchaka merged 4 commits intopython:masterfrom Jul 31, 2018
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…he value of self. * The hash of BuiltinMethodType instances no longer depends on the hash of self. * The hash and equality of ModuleType and MethodWrapperType instances no longer depend on the hash and equality of self. * MethodWrapperType instances no longer support ordering.
pablogsal
reviewed
Jun 21, 2018
Objects/methodobject.c
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| return -1; | ||
| } | ||
| x = _Py_HashPointer(a->m_self); | ||
| if (x == -1) |
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Does this need braces according to PEP7?
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Right. Although this is an old code, just unindented.
But actually this check is not needed because _Py_HashPointer() never returns -1.
| if (x == -1) | ||
| return -1; | ||
| y = PyObject_Hash(a->im_func); | ||
| if (y == -1) |
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PyObject_Hash() can return -1.
Contributor
|
I find this quite confusing: It does depend on the hash of |
rco-odoo
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to odoo-dev/odoo
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Sep 1, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to odoo#56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
robodoo
pushed a commit
to odoo/odoo
that referenced
this pull request
Sep 2, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to #56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
closes #56748
Related: odoo/enterprise#12763
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>
rco-odoo
added a commit
to odoo-dev/odoo
that referenced
this pull request
Sep 2, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to odoo#56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
X-original-commit: a3a4d14
robodoo
pushed a commit
to odoo/odoo
that referenced
this pull request
Sep 3, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to #56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
closes #56960
X-original-commit: a3a4d14
Related: odoo/enterprise#12899
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>
rco-odoo
added a commit
to odoo-dev/odoo
that referenced
this pull request
Sep 3, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to odoo#56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
X-original-commit: a986f49
robodoo
pushed a commit
to odoo/odoo
that referenced
this pull request
Sep 3, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to #56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
X-original-commit: a986f49
fw-bot
pushed a commit
to odoo-dev/odoo
that referenced
this pull request
Sep 3, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to odoo#56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
X-original-commit: d4b2e92
robodoo
pushed a commit
to odoo/odoo
that referenced
this pull request
Sep 3, 2020
Python 3.8 changed the equality rules for bound methods to be based on
the *identity* of the receiver (`__self__`) rather than its *equality*.
This means that in 3.7, methods from different instances will compare
(and hash) equal, thereby landing in the same map "slot", but that isn't
the case in 3.8.
While it's usually not relevant, it's an issue for `GroupCalls` which is
indexed by a function: in 3.7, that being a method from recordsets
comparing equal will deduplicate them, but not anymore in 3.8, leading
to duplicated callbacks (exactly the thing GroupCalls aims to avoid).
Also, the API of `GroupCalls` turned out to be unusual and weird. The
bug above is fixed by using a plain list for callbacks, thereby avoiding
comparisons between registered functions. The API is now:
callbacks.add(func) # add func to callbacks
callbacks.run() # run all callbacks in addition order
callbacks.clear() # remove all callbacks
In order to handle aggregated data, the `callbacks` object provides a
dictionary `callbacks.data` that any callback function can freely use.
For the sake of consistency, the `callbacks.data` dict is automatically
cleared upon execution of callbacks.
Discovered by @william-andre
Related to #56583
References:
* https://bugs.python.org/issue1617161
* python/cpython#7848
* https://docs.python.org/3/whatsnew/changelog.html#python-3-8-0-alpha-1
(no direct link because individual entries are not linkable, look for
bpo-1617161)
X-original-commit: d4b2e92
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of self.
longer depend on the hash and equality of self.
https://bugs.python.org/issue1617161