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import numpy as np
index
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x = np.array([[1,2,3],[4,5,6]],np.int32)
print(x.shape)
x[0,2]
slicing
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print(x[:,2])
changing y has impact on x
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y = x[:,2]
print(y)
y[0]=9
print(y)
print(x)
attributes
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x.flags
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x.shape
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x.strides
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x.data
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x.size
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x.ndim
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x.itemsize
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x.nbytes
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x.min()
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x.argmin()
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x.sum()
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x.mean()