Dave Angel wrote:
Jojo Mwebaze wrote:
Hi There,
i would like to implement the following in lists
assuming
x = 3
y = 4
z = None
i want to create a dynamic list such that
mylist = [ x , y, z ] , if z in not None
if z is None then
mylist = [x,y]
Anyhelp!
cheers
Jojo
Are there any constraints on x and y ? If you want to throw out all
None values, then it's a ready problem. You try it, and if it doesn't
quite work, post the code. We'll try to help.
But if only the third value is special, then there's little point in
making a comprehension of one value. Just conditionally append the z
value to the list containing x and y.
DaveA
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Hello,
I wrote a solution which isn't correct.
>>> [i for i in mylist if i]
[3, 4]
The if condition should test like the other examples given to the list.
>>> [i for i in mylist if i != None]
[3, 4]
'if i' would also leave out the integer 0.
T
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