shouhaddo/python-training

This is a repository to share my students who are undergoing python training under me codes of everyday lectures provided by me.

python-training's Issues

Average value of a list

Hi friends,
I have a python code, including some calculations ending at a list, for example:
P=[a , b , c, d , e , f , g , h , i , j , k , l], which all are numbers. Consider this list to have, say 12 elements. What I'm going to do is that to separate the elements in a 3 groups as:
P = [ a,b,c,d , e,f,g,h, i,j,k,l]. Then I want to average over this three groups, meaning that to define a new list or array like M whose elements are as follows:

M[0] = (P[0]+P[4]+P[8])/3 = (a+e+i)/3

M[1] = (P[1]+P[5]+P[9])/3 = (b+f+j)/3

M[2] = (P[2]+P[6]+P[10])/3 = (c+g+k)/3

M[0] = (P[3]+P[7]+P[11])/3 = (d+h+l)/3.

Actually, the number of element and the length by which I'm going to separate the elements of the list can vary and be large. So I need to have general code doing so. Does anybody have any idea. It would be appreciated. Thank you.

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