Convert for loop Matlab in python

Hello everyone, i'd like to convert my Matlab for loop in a Python for loop, but i'am a beginner in Python.

The for loop is:

step=1;
% a,c,k,h are double arrays

cellsize=100;
me=43545;
mn=54656;



x = size(a,1);
y = size(a,2);

R = size((1 : step : x),2); 
C = size((1 : step : y),2); 

one = zeros(3,R,C);
two = zeros(3,3,R,C);
three = zeros(3,3,R,C);
four = zeros(12,R,C);

pos = zeros(3,1);

jj = 0;
for j = 1 : step : y
    
    jj = jj + 1;
    pos(1) = me + cellsize*(j-1);

    ii = 0;
    for i = 1 : step : x
        
        ii = ii + 1;
        pos(2) = mn - cellsize*(i-1);
        pos(3) = a(i,j);

        s = S(:,i,j); 
        
               
        
        lia=LIA(:,i,j);
        
        [q w e r] = my_function(pos,c,s,k,h);
        
        
        one(:,ii,jj) = q;
        two(:,:,ii,jj) = w;
        three(:,:,ii,jj) = e;
        four(:,ii,jj) = r;
    
    end
    
end

Can you help me please?

Answer 1

[Florian Bidaud]

The equivalent of

for i = start:step:finish
    % do something
end

is

for i in range(start, finish+1,step):
    #do something
    

[Harry Smith]

Thank you. Could you help me for rest of the script?