gottadiveintopython

import sqlite3
from kivy.app import App
from kivy.lang import Builder


def init_db():
    import itertools
    from string import ascii_uppercase
    conn = sqlite3.connect(":memory:")
    cur = conn.cursor()

gottadiveintopython

$HEADER$

float PI = 3.1415926535;
uniform vec2 resolution;
uniform float time;

vec2 rotate(vec2 pos, float angle, vec2 center){
  pos -= center;
  pos *= mat2(cos(angle), sin(-angle), sin(angle), cos(angle));
  pos += center;

gottadiveintopython

from kivy.clock import Clock
from kivy.app import App
from kivy.animation import Animation
from kivy.uix.widget import Widget
from kivy.uix.floatlayout import FloatLayout
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.graphics import RenderContext
from kivy.uix.modalview import ModalView
from kivy.properties import ListProperty, NumericProperty, ObjectProperty, ColorProperty

gottadiveintopython

'''
CPython 3.8.12
pip install kivy[base]==2.1.0
pip install "asynckivy>=0.5,<0.6"
pip install git+https://github.com/gottadiveintopython/kivyx.uix.magnet#egg=kivyx.uix.magnet
'''
from kivy.config import Config
Config.set('graphics', 'width', 1280)
Config.set('graphics', 'height', 720)
# Config.set('graphics', 'maxfps', 30)

gottadiveintopython

# CPython3.8.12 上で測ったところclass-basedの方が17倍近く速かった

from functools import partial
from contextlib import contextmanager
from timeit import timeit


class class_based:
    __slots__ = tuple()

gottadiveintopython

from kivy.graphics.texture import Texture
from kivy.core.text import Label as CoreLabel
from kivy.core.text.markup import MarkupLabel as CoreMarkupLabel


def create_texture_from_text(*, markup=False, **label_kwargs) -> Texture:
    '''
    .. code-block::

        from kivy.metrics import sp