Question : In Python a class seemgingly proper will yield a name 'SampleClass' is not defined error when run

Using the following type of program (see snippet)

Then from Linux Fedore command line with program saved as trygtk.py

python trygtk.py

error from Linux

Traceback (most recent call last):
File "trygtk.py", line 9, in
class SomeWidgets:
File "entry.py", line 70, in SomeWidgets
SomeWidgets()
NameError: name 'SomeWidgets' is not defined

This is arising in programs with a class as my python programs without a class are running just fine

Thanks

Code Snippet:

         
           
             1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:

           
           
             import pygtk
pygtk.require('2.0')
import gtk
 
class SomeWidgets:
           def  foo
                 foo
                foo
         def another foo
                foo
               foo
 etc etc etc
         def main():
                     gtk.main()
                    return 0
           if _name_ ==  "_main_":
                  SomeWidgets()
                  main()

           
         

Open in New Window Select All

Answer : In Python a class seemgingly proper will yield a name 'SampleClass' is not defined error when run

See snippet for the only indentation errors I know.

Your code does not have any of those. It is valid code. It just happens to be not the indentation you wanted. But Python is not a mind reader.

def main

was aligned with the previous defs, and so was seen as another method of the class.

Also please try out the code snippet for posting code. It for me makes it more readable and I can easily refer to lines by #.

                       
             def foo():
a = 3 # IndentationError: expected an indented block
 
def foo():
  a = 3
    b = 4 # IndentationError: unexpected indent
 
def foo():
    a = 3
  b = 4 # IndentationError: unindent does not match any outer indentation level

Open in New Window Select All