There are four array attributes; however, they are only available when using Python 2.2 or later. There are array methods that may be used instead. The attributes are shape, flat, real and imaginary.
>>> print a [[0 1 2] [3 4 5] [6 7 8]] >>> print a.shape (3,3) >>> a.shape = ((9,)) >>> print a.shape (9,)
>> print a [[0 1 2] [3 4 5] [6 7 8]] >> print a.flat 0 1 2 3 4 5 6 7 8] >> a.flat[4] = 100 >> print a [[ 0 1 2] [ 3 100 5] [ 6 7 8]] >> a.flat = arange(9,18) >> print a [[ 9 10 11] [12 13 14] [15 16 17]]
>>> print x [ 0. +1.j 0.84147098+0.54030231j 0.90929743-0.41614684j] >>> print x.real [ 0. 0.84147098 0.90929743] >>> print x.imag [ 1. 0.54030231 -0.41614684] >>> x.imag = arange(3) >>> print x [ 0. +0.j 0.84147098+1.j 0.90929743+2.j] >>> x = reshape(arange(10), (2,5)) + 0j # make complex array >>> print x [[ 0.+0.j 1.+0.j 2.+0.j 3.+0.j 4.+0.j] [ 5.+0.j 6.+0.j 7.+0.j 8.+0.j 9.+0.j]] >>> print x.real [[ 0. 1. 2. 3. 4.] [ 5. 6. 7. 8. 9.]] >>> print x.type(), x.real.type() D d >>> print x.itemsize(), x.imag.itemsize() 16 8
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