Get median of matrix line using python

median_of_maximum_row.py

a = [[5,9,19,0,3,-45,7,3,-20],
[-19,2,3,-8,3.5,18.9, 24,3.12,42,9],
[51,9.7,-9,-20,38,-4.5,17,103,-2.8],
[-9,322,33,18,387.5,9018.9,3,0, 2214],
[25,900,-19,10,31,-435,75,34,-240],
[-2.19,2,3,-8,3.5,18.9, 28,32,2]]

import numpy as np 

def median(lista: list):
	soma = 0
	for i in lista:
		soma += i
	media = round(soma / len(lista), 1)
	return media
     
def maximo(lista: list):
    maximo = lista[0]
    for i in lista:
        if maximo < i:
            maximo = i
    return maximo
     

def median_of_maximum_row(lista: list):
	medians = []
	for i in a:
		media = median(i)
		medians.append(media)
	maximum = maximo(medians)
	index_of_maximum = medians.index(maximum)
	return np.median((lista[index_of_maximum]))
	
print(median_of_maximum_row(a))