import numpy
my_array = numpy.zeros(shape=(row,column))
array = []
np.empty([2, 2])
array([[ -9.74499359e+001, 6.69583040e-309],
[ 2.13182611e-314, 3.06959433e-309]]) #uninitialized
>>> arrray = []
>> print(len(array))
0
>>> a = []
>>> not a
True
fib = []