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author | C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM> | 2023-02-03 00:03:27 (GMT) |
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committer | GitHub <noreply@github.com> | 2023-02-03 00:03:27 (GMT) |
commit | 1b6045668d233269f667c4658c7240256f37f111 (patch) | |
tree | 28a39c906c94374f0aefda24567ea69fdb41830f | |
parent | 0ca67e6313c11263ecaef7ce182308eeb5aa6814 (diff) | |
download | cpython-1b6045668d233269f667c4658c7240256f37f111.zip cpython-1b6045668d233269f667c4658c7240256f37f111.tar.gz cpython-1b6045668d233269f667c4658c7240256f37f111.tar.bz2 |
gh-100925: Move array methods under class in array doc (#101485)
* Move array methods under class in array doc
* Fix a few internal references related to the touched lines
-rw-r--r-- | Doc/library/array.rst | 179 |
1 files changed, 89 insertions, 90 deletions
diff --git a/Doc/library/array.rst b/Doc/library/array.rst index 95f1eaf..75c49e0 100644 --- a/Doc/library/array.rst +++ b/Doc/library/array.rst @@ -60,7 +60,7 @@ Notes: The actual representation of values is determined by the machine architecture (strictly speaking, by the C implementation). The actual size can be accessed -through the :attr:`itemsize` attribute. +through the :attr:`array.itemsize` attribute. The module defines the following item: @@ -85,161 +85,160 @@ The module defines the following type: to add initial items to the array. Otherwise, the iterable initializer is passed to the :meth:`extend` method. - .. audit-event:: array.__new__ typecode,initializer array.array + Array objects support the ordinary sequence operations of indexing, slicing, + concatenation, and multiplication. When using slice assignment, the assigned + value must be an array object with the same type code; in all other cases, + :exc:`TypeError` is raised. Array objects also implement the buffer interface, + and may be used wherever :term:`bytes-like objects <bytes-like object>` are supported. + .. audit-event:: array.__new__ typecode,initializer array.array -Array objects support the ordinary sequence operations of indexing, slicing, -concatenation, and multiplication. When using slice assignment, the assigned -value must be an array object with the same type code; in all other cases, -:exc:`TypeError` is raised. Array objects also implement the buffer interface, -and may be used wherever :term:`bytes-like objects <bytes-like object>` are supported. -The following data items and methods are also supported: + .. attribute:: typecode -.. attribute:: array.typecode + The typecode character used to create the array. - The typecode character used to create the array. + .. attribute:: itemsize -.. attribute:: array.itemsize + The length in bytes of one array item in the internal representation. - The length in bytes of one array item in the internal representation. + .. method:: append(x) -.. method:: array.append(x) + Append a new item with value *x* to the end of the array. - Append a new item with value *x* to the end of the array. + .. method:: buffer_info() -.. method:: array.buffer_info() + Return a tuple ``(address, length)`` giving the current memory address and the + length in elements of the buffer used to hold array's contents. The size of the + memory buffer in bytes can be computed as ``array.buffer_info()[1] * + array.itemsize``. This is occasionally useful when working with low-level (and + inherently unsafe) I/O interfaces that require memory addresses, such as certain + :c:func:`!ioctl` operations. The returned numbers are valid as long as the array + exists and no length-changing operations are applied to it. - Return a tuple ``(address, length)`` giving the current memory address and the - length in elements of the buffer used to hold array's contents. The size of the - memory buffer in bytes can be computed as ``array.buffer_info()[1] * - array.itemsize``. This is occasionally useful when working with low-level (and - inherently unsafe) I/O interfaces that require memory addresses, such as certain - :c:func:`ioctl` operations. The returned numbers are valid as long as the array - exists and no length-changing operations are applied to it. + .. note:: - .. note:: + When using array objects from code written in C or C++ (the only way to + effectively make use of this information), it makes more sense to use the buffer + interface supported by array objects. This method is maintained for backward + compatibility and should be avoided in new code. The buffer interface is + documented in :ref:`bufferobjects`. - When using array objects from code written in C or C++ (the only way to - effectively make use of this information), it makes more sense to use the buffer - interface supported by array objects. This method is maintained for backward - compatibility and should be avoided in new code. The buffer interface is - documented in :ref:`bufferobjects`. + .. method:: byteswap() -.. method:: array.byteswap() + "Byteswap" all items of the array. This is only supported for values which are + 1, 2, 4, or 8 bytes in size; for other types of values, :exc:`RuntimeError` is + raised. It is useful when reading data from a file written on a machine with a + different byte order. - "Byteswap" all items of the array. This is only supported for values which are - 1, 2, 4, or 8 bytes in size; for other types of values, :exc:`RuntimeError` is - raised. It is useful when reading data from a file written on a machine with a - different byte order. + .. method:: count(x) -.. method:: array.count(x) + Return the number of occurrences of *x* in the array. - Return the number of occurrences of *x* in the array. + .. method:: extend(iterable) -.. method:: array.extend(iterable) + Append items from *iterable* to the end of the array. If *iterable* is another + array, it must have *exactly* the same type code; if not, :exc:`TypeError` will + be raised. If *iterable* is not an array, it must be iterable and its elements + must be the right type to be appended to the array. - Append items from *iterable* to the end of the array. If *iterable* is another - array, it must have *exactly* the same type code; if not, :exc:`TypeError` will - be raised. If *iterable* is not an array, it must be iterable and its elements - must be the right type to be appended to the array. + .. method:: frombytes(s) -.. method:: array.frombytes(s) + Appends items from the string, interpreting the string as an array of machine + values (as if it had been read from a file using the :meth:`fromfile` method). - Appends items from the string, interpreting the string as an array of machine - values (as if it had been read from a file using the :meth:`fromfile` method). + .. versionadded:: 3.2 + :meth:`!fromstring` is renamed to :meth:`frombytes` for clarity. - .. versionadded:: 3.2 - :meth:`fromstring` is renamed to :meth:`frombytes` for clarity. + .. method:: fromfile(f, n) -.. method:: array.fromfile(f, n) + Read *n* items (as machine values) from the :term:`file object` *f* and append + them to the end of the array. If less than *n* items are available, + :exc:`EOFError` is raised, but the items that were available are still + inserted into the array. - Read *n* items (as machine values) from the :term:`file object` *f* and append - them to the end of the array. If less than *n* items are available, - :exc:`EOFError` is raised, but the items that were available are still - inserted into the array. + .. method:: fromlist(list) -.. method:: array.fromlist(list) + Append items from the list. This is equivalent to ``for x in list: + a.append(x)`` except that if there is a type error, the array is unchanged. - Append items from the list. This is equivalent to ``for x in list: - a.append(x)`` except that if there is a type error, the array is unchanged. + .. method:: fromunicode(s) -.. method:: array.fromunicode(s) + Extends this array with data from the given unicode string. The array must + be a type ``'u'`` array; otherwise a :exc:`ValueError` is raised. Use + ``array.frombytes(unicodestring.encode(enc))`` to append Unicode data to an + array of some other type. - Extends this array with data from the given unicode string. The array must - be a type ``'u'`` array; otherwise a :exc:`ValueError` is raised. Use - ``array.frombytes(unicodestring.encode(enc))`` to append Unicode data to an - array of some other type. + .. method:: index(x[, start[, stop]]) -.. method:: array.index(x[, start[, stop]]) + Return the smallest *i* such that *i* is the index of the first occurrence of + *x* in the array. The optional arguments *start* and *stop* can be + specified to search for *x* within a subsection of the array. Raise + :exc:`ValueError` if *x* is not found. - Return the smallest *i* such that *i* is the index of the first occurrence of - *x* in the array. The optional arguments *start* and *stop* can be - specified to search for *x* within a subsection of the array. Raise - :exc:`ValueError` if *x* is not found. + .. versionchanged:: 3.10 + Added optional *start* and *stop* parameters. - .. versionchanged:: 3.10 - Added optional *start* and *stop* parameters. -.. method:: array.insert(i, x) + .. method:: insert(i, x) - Insert a new item with value *x* in the array before position *i*. Negative - values are treated as being relative to the end of the array. + Insert a new item with value *x* in the array before position *i*. Negative + values are treated as being relative to the end of the array. -.. method:: array.pop([i]) + .. method:: pop([i]) - Removes the item with the index *i* from the array and returns it. The optional - argument defaults to ``-1``, so that by default the last item is removed and - returned. + Removes the item with the index *i* from the array and returns it. The optional + argument defaults to ``-1``, so that by default the last item is removed and + returned. -.. method:: array.remove(x) + .. method:: remove(x) - Remove the first occurrence of *x* from the array. + Remove the first occurrence of *x* from the array. -.. method:: array.reverse() + .. method:: reverse() - Reverse the order of the items in the array. + Reverse the order of the items in the array. -.. method:: array.tobytes() + .. method:: tobytes() - Convert the array to an array of machine values and return the bytes - representation (the same sequence of bytes that would be written to a file by - the :meth:`tofile` method.) + Convert the array to an array of machine values and return the bytes + representation (the same sequence of bytes that would be written to a file by + the :meth:`tofile` method.) - .. versionadded:: 3.2 - :meth:`tostring` is renamed to :meth:`tobytes` for clarity. + .. versionadded:: 3.2 + :meth:`!tostring` is renamed to :meth:`tobytes` for clarity. -.. method:: array.tofile(f) + .. method:: tofile(f) - Write all items (as machine values) to the :term:`file object` *f*. + Write all items (as machine values) to the :term:`file object` *f*. -.. method:: array.tolist() + .. method:: tolist() - Convert the array to an ordinary list with the same items. + Convert the array to an ordinary list with the same items. -.. method:: array.tounicode() + .. method:: tounicode() - Convert the array to a unicode string. The array must be a type ``'u'`` array; - otherwise a :exc:`ValueError` is raised. Use ``array.tobytes().decode(enc)`` to - obtain a unicode string from an array of some other type. + Convert the array to a unicode string. The array must be a type ``'u'`` array; + otherwise a :exc:`ValueError` is raised. Use ``array.tobytes().decode(enc)`` to + obtain a unicode string from an array of some other type. When an array object is printed or converted to a string, it is represented as |