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AttributeError: 'CSS' object has no attribute 'bind'

See original GitHub issue

Expected Behavior

It would just nicely run like the examples

Current Behavior

Traceback (most recent call last):
  File "...\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "...\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "...\main.py", line 24, in <module>
    main().main_loop()
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga_winforms\app.py", line 49, in main_loop
    self._startup()
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga_winforms\app.py", line 41, in _startup
    self.startup()
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga\interface\app.py", line 144, in startup
    self.main_window.content = self._startup_method(self)
  File "...\main.py", line 9, in build
    box = toga.Box()
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga_winforms\widgets\box.py", line 10, in __init__
    super().__init__(id=id, style=style, children=children)
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga\interface\widgets\box.py", line 21, in __init__
    super().__init__(id=id, style=style, children=children)
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga\interface\widgets\base.py", line 144, in __init__
    self.style = CSS()
  File "...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\toga\interface\widgets\base.py", line 170, in style
    self._style = value.bind(self)
AttributeError: 'CSS' object has no attribute 'bind'

Steps to reproduce

Run the very first example

Your Environment

global enviornment

Python Version 3.6.4
Operating System and Version
- macOS - version:
- Linux - distro: - version:
- Windows - version: 7
- Other - name: - version:
Toga Target
- android
- cocoa
- django
- gtk
- iOS
- tvOS
- watchOS
- winforms
- win32
- Other (please specify)

Issue Analytics

State:
Created 4 years ago
Comments:6 (2 by maintainers)

Top GitHub Comments

3reactions

julenlcommented, Aug 8, 2019

The partial workaround of @erwindewolf worked for me:

pip uninstall colosseum
pip install colosseum==0.1.6
python3 setup.py django -s

And everything runs just fine. Luckily I don’t have other dependencies with colosseum.

2reactions

freakboy3742commented, May 25, 2019

It looks like you’re possibly running an old tutorial for the 0.2 branch of code. That branch didn’t work well on Windows; the 0.3 branch has much better support.

Can you confirm:

Which version of the tutorial you are running (e.g., by providing a URL), and
Whether your installation of toga was pip install toga or pip install --pre toga?

(For the record - the latter is the version that will work on Windows)