Sequentially take a window of rows from array (python)

I have an array of size nxm and want to take the first 10 rows and perform calculations, then take the next 10 rows perform calculations, etc. But this is hard coded, how can I make a loop?

Code Attempted:

import numpy as np
total = []
x= np.random.random((100,4))
a = np.average(x[:10])
total.append(a)
a = np.average(x[10:20])
total.append(a)
a = np.average(x[20:30])
....

Goal:

for *this array*:
# to something
# append value
# go back and get next 10 values

>Solution :

It looks like you want the following.

import numpy as np
x = np.random.random((100,4))
L = 10
k = 100//L
total = [np.average(x[L*i:L*(i+1)]) for i in range(k)]

If you’d rather implement this using a loop rather than list comprehension,

import numpy as np
x = np.random.random((100,4))
L = 10
k = 100//L
total = []
for i in range(k):
    total.append(np.average(x[L*i:L*(i+1)]))