Class in another tab.

Frey

I have a class called "Square".

When I put the class in the main file, it works.

But when I put the class into another tab called Square, says: "NameError: global name 'Square' is not defined".

If I write "import Square", says: TypeError: 'module' object is not callable.

What's the problem?

Thank you.

Chrisir

name the tab differently

sketches should not hold the same name as the class

Frey

I tried, but got the same error...

kfrajer

Circle is your class? Or is it in a package? Why are you using import if it is in another tab? When Processing executes, it brings all the code from different tabs together. Keep in mind tabs are physically stored as files. You have to make sure the file is a pde file. If it has another extension, like ".java", then it will behave differently.

Kf

GoToLoop

• In Python Mode, the main 1st tab is a ".pyde" extension file.
• However, when we add extra tabs, those are of extension ".py" instead.
• And each of those ".py" tabs is treated as a Python module.
• And Python Mode compiles those as ".class" files as well.
• But don't worry, we can still access the whole Processing's API from ".py" tabs. :)>-
• So in order to import a whole ".py" tab, we can use: from Name_of_the_Tab import *
• Below's a simple sample on how to do multi-tab in Python Mode: :bz
  

"TabImportTest.pyde":

# https://forum.Processing.org/two/discussion/22043/class-in-another-tab#Item_4
# GoToLoop (2017-Apr-17)

from Square import *

def setup():
    square = Square(random(10))
    print square, square.area()
    exit()

"Square.py":

class Square:
    def __init__(self, x): self.x = x
    def area(self): return sq(self.x)
    def __str__(self): return `self.x`

Frey

"Circle" was a typo.

My class is "Square", the tab is "Square".

GoToLoop gave the right answer: "from Square import *"

My mistake was write only "import Square" .

Thank you guys.

GoToLoop

Of course you can be more specific and type in: from Square import Square. ;)

Frey

Oh, right, thanks for the clarification.

GoToLoop

Another variation w/ import only and w/o from. :P
However, we've gotta use name_of_the_tab.property_name instead of just property_name: :-<

# https://forum.Processing.org/two/discussion/22043/class-in-another-tab#Item_8
# GoToLoop (2017-Apr-17)

import Square

def setup():
    global square
    square = Square.Square(random(10))
    print square, square.area()
    exit()

Frey

Oh, nice, the more you know...

Thank you.