Kivy access version number (App variable) outside main.py

Question

I want to access the version number of my app outside the main.py. Is this possible to do this in foo.py without import main.py ? What I tried:

main.py:

from kivy.app import App
__version__ = '0.4.0'

class KanjiOriginApp(App):
    app_version = StringProperty(__version__)

foo.py:

from kivy.app import App
print(App.app_version)

But this results in a: AttributeError: type object 'App' has no attribute 'app_version' .

Answer 1

您需要App.get_running_app().app_version -StringProperty提供实例级的行为，它不会修改App本身的类定义。