python sorting - ghdrako/doc_snipets GitHub Wiki
sort method - sorts it in place
sorted function, which returns a new list
x = [4,1,2,3]
y = sorted(x) # is [1,2,3,4], x is unchanged
x.sort() # now x is [1,2,3,4]
# sort the list by absolute value from largest to smallest
x = sorted([-4,1,-2,3], key=abs, reverse=True) # is [-4,3,-2,1]