global name is not defined - error

[Marco Wahl]

"a" <a at tempinbox.com> writes:

> What I want
> ---------------
> I want to create a list of items from a function operating on an array
> of strings

Ok.

> What I did
> -----------------
> list=["s0","s1","s2"]
> l=len(list)
>       for i in range(l):
>                               d_list[i]=f.do(list[i])
>                               print d_list[i]

Aha!

> Error:
> ------
> global name 'd_list' is not defined
> Python        c:\test.py in newClass, line 30

Just as the error message tells: 'd_list' is not
defined which is an error.

Try

list=["s0","s1","s2"]
d_list = []
l=len(list)
        for i in range(l):
#                               d_list[i]=f.do(list[i])
                                d_list.append(f.do(list[i]))
                                print d_list[i]

This is just one suggestion there may be more elegant
ways.  Have you heard about list comprehension?


HTH