Re: öpcaö variable refrenced before assignment

[Jussi Piitulainen]

markotaht at gmail.com writes:

> fail4 = "palgad.txt"
> 
> f4 = open(fail4, "r")
> 
> def koguarv_ridu failis(f):
>     for i, l in enumerate(f):
>         pass
>     return i+1
>
> def palgad(f4):
>     palgad = 0
>     while True:
>         f4r = f4.readline()
>         if f4r == "":
>             break
>         palgad += int(f4r[f4r.find(";")+1:])
>     return palgad
> 
> def kuu_keskmine(palgad, f):
>     return palgad/koguarv_ridu_failis(f)
> 
> print(kuu_keskmine(palgad(f4), f4))
> 
> 
> Why does it give me local variable "i" referenced before assignment
> in koguarv_ridu_failis(f) on the return i+1 line

Because palgad(f4) consumed f, the loop in koguarv_ridu_failis is not
executed even once.

> But if i do directly koguarv_ridu_failis(f4) then i get correct
> antswer.

Try to do just koguarv_ridu_failis(f4) twice. You'll get the same
error on the second attempt.