Example 1: code for dimensions in numpy
import numpy as np arr = np.array([1, 2, 3, 4]) arr_2D = np.array([[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]]) print(arr.ndim) print(arr_2D.ndim)
Example 2: numpy array length
np_array.size
Example 3: python numpy array size of n
numpy.array([0] * n) #creates an int64 numpy array of size n with each element having a vaule of 0 numpy.array([0] * n, dtype = '<type>') #creates a numpy array of size n with a type of <type>
Example 4: numpy how to length of vector
>>> x = np.zeros((3, 5, 2), dtype=np.complex128) >>> x.size 30 >>> np.prod(x.shape) 30
Example 5: numpy number of elements
import numpy as np x = np.array([1,2,3], dtype=np.float64) print("Size of the array: ", x.size) print("Length of one array element in bytes: ", x.itemsize) print("Total bytes consumed by the elements of the array: ", x.nbytes)
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