Question

i have a little problem when i try to attach a class to an object in python. I have a textfile ‘file’, which is seperated into a list for each line. The program will read every line and print a name and a longname. Imagine that the textfile look like this:

“John ‘\n’ John Travolta” (…)

Here’s my bit of code:

class Name:
  def __init__(self, name, longname):
   self.name=name
   self.longname=longname
  def __str__(self):
   s="Name:"+self.name
   s+="\n Longname:"+self.longname
  def func():
   for line in file:
       name=line[:1]
       longname=line['\n':]
c=Name(name, longname)
c.func()

I get the error message that my ‘name’ and ‘longname’ is not defined but I did this with my function??? 🙁

It works if I put the function outside the class, like this:

def func():
 for line in file:
  name=line[:1]
  longname=line['\n':]
  c=Name(name, longname)
  print c

Need help!

Answer 1

You need to assign something to name and longname before you can use them:

name = 'foo'
longname = 'foo bar'
c=Name(name, longname)
c.func()

---

but I did this with my function?

No.

• Firstly, you didn’t call your function yet. The function call is after the line that gives the error.
• Secondly, the function has its own scope. The name there is different from the global name.

I don’t think it makes any sense to move your func method inside the class definition. The code that you said works is a better way to do it.