Some python features I have looked for, but do not exist.
- assignment operator
- class setup
- conditional assignment
- boolean inplace operators
- byte() conversion
assignment operator
Kind of like permanently binding a type to a variable.
class Object:
def __assign__(self, value):
print("assigned")
>> a = Object()
>> a = 1
assigned
class setup
class Object:
def __setup__(cls):
cls.CONSTANT = 123
cls.method = lambda x: x+1
__setup__ will be called only once in the existence of the class Object.
maybe the qualname variable can help.
declare class constants
Hmm, I wrote this down but I forgot what I meant with this, this is basically just three different ways of declaring class constants.
def addconstant(name, value):
import inspect
inspect.currentframe().f_back.f_locals[name] = value
class Tst:
addconstant('xyz', 123)
locals()['klm'] = 123
abc = 123
print Tst.xyz
print Tst.klm
print Tst.abc
conditional assignment
It would be nice to have a way to avoid having to write this:
if a is None:
a = b
something like:
a ?= b # assigns only when a is None
boolean inplace operators
Most operators have an ‘inplace’ variant, but not the boolean operators:
a or= b
a and= b
byte() conversion
A function which converts an integer to a single byte. like chr() converts an integer to a character.
