[Tutor] Bothersome NoneType Error for a List object

2012-07-04 Thread Osemeka Osuagwu
Hi, I am trying to find the smallest positive number that is divisible by all of the numbers from 1 to 20 without a remainder. I wrote the following code (implementation of a solution method found in http://en.wikipedia.org/wiki/Least_common_multiple#A_method_using_a_table ) but kept getting an

Re: [Tutor] Bothersome NoneType Error for a List object

2012-07-04 Thread Steven D'Aprano
Osemeka Osuagwu wrote: templist = templist.append(prime) The append method operates in place, and returns None. It doesn't return a list: py mylist = [] py x = mylist.append(42) py x is None True py mylist [42] Replace that line with just templist.append(prime) -- Steven

Re: [Tutor] Bothersome NoneType Error for a List object

2012-07-04 Thread Alan Gauld
On 04/07/12 17:01, Osemeka Osuagwu wrote: lcm = reduce(lambda x, y: x*y, templist) #my first lambda expression! (multiply all members of templist Congratulations :-) But you could have done: import operator lcm = reduce(operator.mul, templist) instead. -- Alan G Author of the