In <364bcdb3-fdd5-4774-b7d2-040e2ccb4...@googlegroups.com> William Bryant
<gogobe...@gmail.com> writes:
> Hello, I've done this so far but why doesn't the mode function work?
> def mode():
> global NumberOfXItems, Themode
> for i in List:
> NumberOfXItems.append(i)
> NumberOfXItems.append(List.count(i))
> Themode = max(NumberOfXItems)
> print(Themode)
As far as I can see, you're appending each of the user's numbers onto
NumberOfXItems, and you're also appending the number of times each number
occurs.
So, if the user had entered these numbers:
5 9 9 9 15 100 100
NumberOfXItems would end up looking like this:
5 1 9 3 9 3 9 3 15 1 100 2 100 2
The max is 100, but 9 is the most often-occuring number.
Also, since NumberOfXItems mixes user input and the counts of that input,
you risk getting a max that the user didn't even enter. For example if the
user entered these numbers:
1 1 1 1 1 1 2 3
NumberOfXItems would end up looking like this:
1 6 1 6 1 6 1 6 1 6 1 6 2 1 3 1
The max is 6, which is a count, not user input.
mode would be much better written like this:
def mode(mylist):
max_occurrences = 0
themode = None
for i in mylist:
thecount = mylist.count(i)
if thecount > max_occurrences:
max_occurrences = thecount
themode = i
print(themode)
--
John Gordon A is for Amy, who fell down the stairs
gor...@panix.com B is for Basil, assaulted by bears
-- Edward Gorey, "The Gashlycrumb Tinies"
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