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arr = np.array([1, 2, 3, 4, 5])
# See array size
arr.size # 5
# See array dimension
arr.ndim # 1
# See array size in each dimension
arr.shape # (5,) ... meaning 5 elements in first dimension
# See dimension data type
arr.dtype # int64
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# To get the length of a Python array, use 'len()'
a = arr.array(‘d’, [1.1, 2.1, 3.1])
len(a) # Output: 3
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#new array in range 1 -> 10;
ar = [i for i in range(1,10)]
print(len(ar))
# OR
print(len([1,2,3]))