np create array len code example

Example 1: 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 2: numpy init array

a=[]
for i in range(8):
    a.append(i)