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Kirill Smelkov
cpython
Commits
cbbaa960
Commit
cbbaa960
authored
Feb 25, 2011
by
Eli Bendersky
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Issue #10516: adding list.clear() and list.copy() methods
parent
3108f983
Changes
6
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6 changed files
with
81 additions
and
2 deletions
+81
-2
Doc/library/stdtypes.rst
Doc/library/stdtypes.rst
+13
-1
Lib/collections/__init__.py
Lib/collections/__init__.py
+2
-0
Lib/test/list_tests.py
Lib/test/list_tests.py
+42
-0
Lib/test/test_descrtut.py
Lib/test/test_descrtut.py
+2
-0
Misc/NEWS
Misc/NEWS
+2
-0
Objects/listobject.c
Objects/listobject.c
+20
-1
No files found.
Doc/library/stdtypes.rst
View file @
cbbaa960
...
...
@@ -1642,6 +1642,8 @@ Note that while lists allow their items to be of any type, bytearray object
single: append() (sequence method)
single: extend() (sequence method)
single: count() (sequence method)
single: clear() (sequence method)
single: copy() (sequence method)
single: index() (sequence method)
single: insert() (sequence method)
single: pop() (sequence method)
...
...
@@ -1673,6 +1675,12 @@ Note that while lists allow their items to be of any type, bytearray object
| ``s.extend(x)`` | same as ``s[len(s):len(s)] = | \(2) |
| | x`` | |
+------------------------------+--------------------------------+---------------------+
| ``s.clear()`` | remove all items from ``s`` | \(8) |
| | | |
+------------------------------+--------------------------------+---------------------+
| ``s.copy()`` | return a shallow copy of ``s`` | \(8) |
| | | |
+------------------------------+--------------------------------+---------------------+
| ``s.count(x)`` | return number of *i*'s for | |
| | which ``s[i] == x`` | |
+------------------------------+--------------------------------+---------------------+
...
...
@@ -1749,7 +1757,11 @@ Notes:
detect that the list has been mutated during a sort.
(8)
:meth:`sort` is not supported by :class:`bytearray` objects.
:meth:`clear`, :meth:`!copy` and :meth:`sort` are not supported by
:class:`bytearray` objects.
.. versionadded:: 3.3
:meth:`clear` and :meth:`!copy` methods.
.. _bytes-methods:
...
...
Lib/collections/__init__.py
View file @
cbbaa960
...
...
@@ -844,6 +844,8 @@ class UserList(MutableSequence):
def
insert
(
self
,
i
,
item
):
self
.
data
.
insert
(
i
,
item
)
def
pop
(
self
,
i
=-
1
):
return
self
.
data
.
pop
(
i
)
def
remove
(
self
,
item
):
self
.
data
.
remove
(
item
)
def
clear
(
self
):
self
.
data
.
clear
()
def
copy
(
self
):
return
self
.
data
.
copy
()
def
count
(
self
,
item
):
return
self
.
data
.
count
(
item
)
def
index
(
self
,
item
,
*
args
):
return
self
.
data
.
index
(
item
,
*
args
)
def
reverse
(
self
):
self
.
data
.
reverse
()
...
...
Lib/test/list_tests.py
View file @
cbbaa960
...
...
@@ -425,6 +425,48 @@ class CommonTest(seq_tests.CommonTest):
self
.
assertRaises
(
TypeError
,
u
.
reverse
,
42
)
def
test_clear
(
self
):
u
=
self
.
type2test
([
2
,
3
,
4
])
u
.
clear
()
self
.
assertEqual
(
u
,
[])
u
=
self
.
type2test
([])
u
.
clear
()
self
.
assertEqual
(
u
,
[])
u
=
self
.
type2test
([])
u
.
append
(
1
)
u
.
clear
()
u
.
append
(
2
)
self
.
assertEqual
(
u
,
[
2
])
self
.
assertRaises
(
TypeError
,
u
.
clear
,
None
)
def
test_copy
(
self
):
u
=
self
.
type2test
([
1
,
2
,
3
])
v
=
u
.
copy
()
self
.
assertEqual
(
v
,
[
1
,
2
,
3
])
u
=
self
.
type2test
([])
v
=
u
.
copy
()
self
.
assertEqual
(
v
,
[])
# test that it's indeed a copy and not a reference
u
=
self
.
type2test
([
'a'
,
'b'
])
v
=
u
.
copy
()
v
.
append
(
'i'
)
self
.
assertEqual
(
u
,
[
'a'
,
'b'
])
self
.
assertEqual
(
v
,
u
+
[
'i'
])
# test that it's a shallow, not a deep copy
u
=
self
.
type2test
([
1
,
2
,
[
3
,
4
],
5
])
v
=
u
.
copy
()
v
[
2
].
append
(
666
)
self
.
assertEqual
(
u
,
[
1
,
2
,
[
3
,
4
,
666
],
5
])
self
.
assertEqual
(
u
,
v
)
self
.
assertRaises
(
TypeError
,
u
.
copy
,
None
)
def
test_sort
(
self
):
u
=
self
.
type2test
([
1
,
0
])
u
.
sort
()
...
...
Lib/test/test_descrtut.py
View file @
cbbaa960
...
...
@@ -199,6 +199,8 @@ You can get the information from the list type:
'__str__',
'__subclasshook__',
'append',
'clear',
'copy',
'count',
'extend',
'index',
...
...
Misc/NEWS
View file @
cbbaa960
...
...
@@ -30,6 +30,8 @@ Core and Builtins
- Check for NULL result in PyType_FromSpec.
- Issue #10516: New copy() and clear() methods for lists.
Library
-------
...
...
Objects/listobject.c
View file @
cbbaa960
...
...
@@ -746,6 +746,19 @@ listinsert(PyListObject *self, PyObject *args)
return
NULL
;
}
static
PyObject
*
listclear
(
PyListObject
*
self
)
{
list_clear
(
self
);
Py_RETURN_NONE
;
}
static
PyObject
*
listcopy
(
PyListObject
*
self
)
{
return
list_slice
(
self
,
0
,
Py_SIZE
(
self
));
}
static
PyObject
*
listappend
(
PyListObject
*
self
,
PyObject
*
v
)
{
...
...
@@ -2322,6 +2335,10 @@ PyDoc_STRVAR(reversed_doc,
"L.__reversed__() -- return a reverse iterator over the list"
);
PyDoc_STRVAR
(
sizeof_doc
,
"L.__sizeof__() -- size of L in memory, in bytes"
);
PyDoc_STRVAR
(
clear_doc
,
"L.clear() -> None -- remove all items from L"
);
PyDoc_STRVAR
(
copy_doc
,
"L.copy() -> list -- a shallow copy of L"
);
PyDoc_STRVAR
(
append_doc
,
"L.append(object) -- append object to end"
);
PyDoc_STRVAR
(
extend_doc
,
...
...
@@ -2350,9 +2367,11 @@ static PyMethodDef list_methods[] = {
{
"__getitem__"
,
(
PyCFunction
)
list_subscript
,
METH_O
|
METH_COEXIST
,
getitem_doc
},
{
"__reversed__"
,(
PyCFunction
)
list_reversed
,
METH_NOARGS
,
reversed_doc
},
{
"__sizeof__"
,
(
PyCFunction
)
list_sizeof
,
METH_NOARGS
,
sizeof_doc
},
{
"clear"
,
(
PyCFunction
)
listclear
,
METH_NOARGS
,
clear_doc
},
{
"copy"
,
(
PyCFunction
)
listcopy
,
METH_NOARGS
,
copy_doc
},
{
"append"
,
(
PyCFunction
)
listappend
,
METH_O
,
append_doc
},
{
"insert"
,
(
PyCFunction
)
listinsert
,
METH_VARARGS
,
insert_doc
},
{
"extend"
,
(
PyCFunction
)
listextend
,
METH_O
,
extend_doc
},
{
"extend"
,
(
PyCFunction
)
listextend
,
METH_O
,
extend_doc
},
{
"pop"
,
(
PyCFunction
)
listpop
,
METH_VARARGS
,
pop_doc
},
{
"remove"
,
(
PyCFunction
)
listremove
,
METH_O
,
remove_doc
},
{
"index"
,
(
PyCFunction
)
listindex
,
METH_VARARGS
,
index_doc
},
...
...
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