On Wed, 03 Feb 2010 11:21:56 +0800
David <ld...@gmx.net> wrote:
> Hello list,
>
> I thought this was easy even for me, but I was wrong, I guess.
> Here is what I want to do: take two random numbers between 1 and 99, and
> put them into a list.
>
> import random
> terms = []
> for i in range(2):
> terms = random.randint(1, 99)
> print terms
>
> This prints just one number (the last one generated in the loop?)
Yo, terms now refers to a simple integer. What you want is instead:
for i in range(2):
term = random.randint(1, 99)
terms.append(term) # put new item at end of list
print terms
> So I tried to change line 4 to the following:
> terms += random.randint(1, 99)
This is equivalent to
terms = terms + random.randint(1, 99)
Because the first operand is a list, python won't do an addition (yes, the
operator can be misleading, I would personly prefer eg '++' to avoid
ambiguity), but a so-called "concatenation" (yes, that word is ugly ;-). This
"glues" together 2 sequences (lists or strings). In this case, you get an error
because the second operand is not a sequence.
Denis
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