x = [3500, 100, 200] repeat = len(x)array = [1, 2, 3, 4, 5] print(len(arr))# To get the length of a Python array, use 'len()' a = arr.array(‘d’, [1.1, 2.1, 3.1]) len(a) # Output: 3arr = 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 a=arr.array('d', [1.1 , 2.1 ,3.1] ) len(a)#new array in range 1 -> 10; ar = [i for i in range(1,10)] print(len(ar)) # OR print(len([1,2,3]))