<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Hello, > > I need your help understanding lambda (and doing it a better way > without). > > f = lambda x : x*x
There is no reason to ever write name=lambda... def f(x): return x*x is better because it attaches the name to the function for tracebacks. > # this is a list of functions > [f for y in range(1,5)] > > [f for y in range(1,5)][0](2) > # returns 4, as expected > > > # ok now I want a list like > # [x^2, 2*x^2, 3*x^2,...] Given: def makef(multiplier): def f(x): return multiplier*x*x return f > [f*y for y in range(5)] I believe [makef(y) for y in range(5)] will do what you want. The slightly abbreviated lambda form is never necessary, that I know of, and notoriously confusing when used in list comprehensions. So I advise don't. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
