@brumm
Thanks.That's very useful.

As much as I like Pythonista, we have to face the fact that there's no more development. Fortunately there's a very active, open source, Python environment for iOS/iPadOS called PyTo. And they have just released Python 3.8.
Unfortunately I can't find a forum, like this one for that app. Is anyone aware of a user group or similar for PyTo?

And PyTo is open source, so even if the developer is not anymore supporting the product (like seems the case with Pythonista) others can continue the product (at least in theory).

@mithrendal
You missed a K in the income: it's $ 30K ...

If you install the font via AnyFont it becomes system wide available.
Then you can just load it directly, without the need for a .ttf to be loaded.

I can recommend the AnyFont, available in the App store.

That's good news.
Does this also hold for the soon to be released iPadOS?

What about compatibility of the normal (non-Beta) version of Pythonista on iPad OS?

@enceladus
This GUI Customview is where the getter_setter would certainly be useful!

@mikael
Thanks for this great idea.
I have renamed your decorator to getter_setter, to make the purpose of it more clear.

Thus we define a decorator function:

def getter_setter(func):
    return property(func, func)

and then we can redo the example as:

class Example:

@getter_setter
def my_property(self, *value):
    if value:
        self._my_property = value[0]
    else:
        return self._my_property

or EAFP style:

class Example:

    @getter_setter
    def my_property(self, *value):
        try:
            self._my_property = value[0]
        except IndexError:
            return self._my_property

Optionally, we could define two more decorators for getter only and setter only properties:

def getter(func):
    def raise_attribute_error(*args):
        raise AttributeError("can't set attribute")
    return property(func, raise_attribute_error)
    

def setter(func):
    def raise_attribute_error(*args):
        raise AttributeError("can't get attribute")
    return property(raise_attribute_error, func)

Here is an example of a Circle class demonstrating the three decorators.
radius can be used to get the radius and set the radius (thus updating the _area attribute)
area can be used to get the area only. Setting will raise an error.
diameter can only be used to set the radius. You can’t get it.

Here is an implementation with getter_setter only:

import math


class Circle:
    def __init__(self, radius):
        self.radius = radius
        
    @getter_setter
    def radius(self, *value):
        if value:
            self._radius = value[0]
            self._area = math.pi * self._radius ** 2
        else:
            return self._radius
            
    @getter_setter
    def area(self, *value):
        if value:
            raise AttributeError("can't set attribute")
        else:
            return self._area
            
    @getter_setter
    def diameter(self, *value):
        if value:
            self.radius = value[0] / 2
        else:
            raise AttributeError("can't get attribute")

And if we use getter and setter as well:

import math


class Circle:
    def __init__(self, radius):
        self.radius = radius
        
    @getter_setter
    def radius(self, *value):
        if value:
            self._radius = value[0]
            self._area = math.pi * self._radius ** 2
        else:
            return self._radius
            
    @getter
    def area(self):
        return self._area
            
    @setter
    def diameter(self, value):
        self.radius = value / 2