8.7. array

---

() (array) (sequence) :

	C	Python	()
'b'	signed char	int	1
'B'	unsigned char	int	1
'u'	Py_UNICODE	Unicode(unicode)	2	(1)
'h'	signed short	int	2
'H'	unsigned short	int	2
'i'	signed int	int	2
'I'	unsigned int	int	2
'l'	signed long	int	4
'L'	unsigned long	int	4
'q'	signed long long	int	8	(2)
'Q'	unsigned long long	int	8	(2)
'f'			4
'd'	double		8

:

1. 'u' Python Unicode (Py_UNICODE wchar_t) 16bit 32bit

   'u' Py_UNICODE API

   3.3 4.0 .

2. 'q' 'Q' Python C C long long Windows __int64

   3.3 .

(C) itemsize

:

class array.array(typecode[, initializer])

typecode initializer bytes-like object

initializer fromlist() frombytes() fromunicode() () initializer extend()

array.typecodes

TypeError bytes-like objects

:

array.typecode

array.itemsize

1

array.append(x)

x

array.buffer_info()

(address, length) array.buffer_info()[1] * array.itemsize ioctl() () I/O

C C++ (buffer_info() ) (buffer Protocol)

array.byteswap()

() 124 8 RuntimeError

array.count(x)

x

array.extend(iterable)

iterable iterable TypeError iterable

array.frombytes(s)

( fromfile() )

3.2 : fromstring() frombytes()

array.fromfile(f, n)

f () n n EOFError f read()

array.fromlist(list)

for x in list: a.append(x)

array.fromstring()

frombytes()

array.fromunicode(s)

Unicode 'u' ValueError Unicode array.frombytes(unicodestring.encode(enc))

array.index(x)

x i

array.insert(i, x)

i x i

array.pop([i])

i -1

array.remove(x)

x

array.reverse()

array.tobytes()

array array bytes (tofile() )

3.2 : tostring() tobytes()

array.tofile(f)

() file object f

array.tolist()

array.tostring()

tobytes()

array.tounicode()

Unicode 'u' ValueError Unicode array.tobytes().decode(enc)

array(typecode, initializer) initializer typecode 'u' array from array import array eval() :

array('l')
array('u', 'hello \u2641')
array('l', [1, 2, 3, 4, 5])
array('d', [1.0, 2.0, 3.14])

struct

xdrlib

(External Data Representation, XDR)

Numerical Python

Numeric Python (NumPy) Numerical Python http://www.numpy.org/