python - 我的代码有效，但速度很慢。除了使用 framebuf 和为 pico-unicorn 编写我自己的驱动程序之外，我怎样才能让它更快？最佳实践？

Question

我是 python 的初学者，但想创建一个简单的硬件提醒来放置正确的 bin。也许在这个过程中学到一些东西。我的设置是 Pimoroni 的 Raspberry Pico 和 Pico-Unicorn 帽子。目标是每周四滚动提醒。首先我用单一颜色制作它，然后我想做一个特定的渐变

代码的要点是我使用了嵌套列表，其中列表的 [x][y] 对应于 pico-unicorn led 矩阵的 x 和 y。[x][y] 的值将是 0（熄灭）或十六进制颜色（以十六进制颜色点亮）。

缺少学习汇编，我可以用代码做什么？我的方法是否存在根本缺陷，或者只是 pico 很慢？它有效，不要误会我的意思，但如果我能做些什么来让它更好/更快——我只想学习最佳实践。另外，我研究过使用 framebuf 库，但它有一个我不喜欢的固定字体。感谢任何提示。

import picounicorn as display
import utime
import math

utime.sleep(0.5)

display.init()
ledwidth= display.get_width()
ledheight = display.get_height()

def displayoff():
    return [[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0]]

def lettercolumn(letter):
    if letter == "H":
        return [[0,1,1,1,1,1,0],[0,0,0,1,0,0,0],[0,0,0,1,0,0,0],[0,0,0,1,0,0,0],[0,1,1,1,1,1,0]]
    elif letter == "A":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,1,1,1,1,0]]
    elif letter == "B":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,0,1,1,1,0,0]]
    elif letter == "C":
        return [[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0]]
    elif letter == "D":
        return [[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,0,1,1,1,0,0]]
    elif letter == "E":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,0,0,1,0]]
    elif letter == "F":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,0,0,0,0,0]]
    elif letter == "G":
        return [[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,1,1,0]]
    elif letter == "I":
        return [[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0]]
    elif letter == "J":
        return [[0,1,0,0,1,1,0],[0,1,0,0,0,1,0],[0,1,1,1,1,1,0],[0,1,0,0,0,0,0],[0,0,0,0,0,0,0]]
    elif letter == "K":
        return [[0,1,1,1,1,1,0],[0,0,0,1,0,0,0],[0,0,1,0,1,0,0],[0,1,0,0,0,1,0],[0,0,0,0,0,0,0]]
    elif letter == "L":
        return [[0,1,1,1,1,1,0],[0,0,0,0,0,1,0],[0,0,0,0,0,1,0],[0,0,0,0,0,1,0],[0,0,0,0,0,0,0]]
    elif letter == "M":
        return [[0,1,1,1,1,1,0],[0,0,1,0,0,0,0],[0,0,0,1,0,0,0],[0,0,1,0,0,0,0],[0,1,1,1,1,1,0]]
    elif letter == "N":
        return [[0,1,1,1,1,1,0],[0,0,1,0,0,0,0],[0,0,0,1,0,0,0],[0,0,0,0,1,0,0],[0,1,1,1,1,1,0]]
    elif letter == "O":
        return [[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,1,1,1,1,0]]
    elif letter == "P":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,1,1,0,0,0]]
    elif letter == "Q":
        return [[0,1,1,1,1,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,1,1,0],[0,1,1,1,1,1,0]]
    elif letter == "R":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,0,0],[0,1,0,1,0,0,0],[0,1,0,1,1,0,0],[0,1,1,1,0,1,0]]
    elif letter == "S":
        return [[0,1,1,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,1,1,0]]
    elif letter == "T":
        return [[0,1,0,0,0,0,0],[0,1,0,0,0,0,0],[0,1,1,1,1,1,0],[0,1,0,0,0,0,0],[0,1,0,0,0,0,0]]
    elif letter == "U":
        return [[0,1,1,1,1,1,0],[0,0,0,0,0,1,0],[0,0,0,0,0,1,0],[0,0,0,0,0,1,0],[0,1,1,1,1,1,0]]
    elif letter == "V":
        return [[0,1,1,0,0,0,0],[0,0,0,1,1,0,0],[0,0,0,0,0,1,0],[0,0,0,1,1,0,0],[0,1,1,0,0,0,0]]
    elif letter == "W":
        return [[0,1,1,1,1,1,0],[0,0,0,0,0,1,0],[0,0,0,0,1,0,0],[0,0,0,0,0,1,0],[0,1,1,1,1,1,0]]
    elif letter == "X":
        return [[0,1,0,0,0,1,0],[0,0,1,0,1,0,0],[0,0,0,1,0,0,0],[0,0,1,0,1,0,0],[0,1,0,0,0,1,0]]
    elif letter == "Y":
        return [[0,1,0,0,0,0,0],[0,0,1,0,0,0,0],[0,0,0,1,1,1,0],[0,0,1,0,0,0,0],[0,1,0,0,0,0,0]]
    elif letter == "Z":
        return [[0,1,0,0,0,1,0],[0,1,0,0,1,1,0],[0,1,0,1,0,1,0],[0,1,1,0,0,1,0],[0,1,0,0,0,1,0]]
    elif letter == "0":
        return [[0,0,1,1,1,0,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,1,0,0,0,1,0],[0,0,1,1,1,0,0]]
    elif letter == "1":
        return [[0,0,0,0,0,0,0],[0,1,0,0,0,0,0],[0,1,1,1,1,1,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0]]
    elif letter == "2":
        return [[0,0,1,0,0,1,0],[0,1,0,0,1,1,0],[0,1,0,1,0,1,0],[0,0,1,0,0,1,0],[0,0,0,0,0,0,0]]
    elif letter == "3":
        return [[0,1,0,0,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,1,1,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == "4":
        return [[0,1,1,1,0,0,0],[0,0,0,1,0,0,0],[0,0,0,1,0,0,0],[0,1,1,1,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == "5":
        return [[0,0,1,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == "6":
        return [[0,1,1,1,1,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == "7":
        return [[0,1,0,0,0,1,0],[0,1,0,0,1,0,0],[0,1,0,1,0,0,0],[0,1,1,0,0,0,0],[0,0,0,0,0,0,0]]
    elif letter == "8":
        return [[0,1,1,0,1,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,1,0,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == "9":
        return [[0,1,1,1,0,1,0],[0,1,0,1,0,1,0],[0,1,0,1,0,1,0],[0,1,1,1,1,1,0],[0,0,0,0,0,0,0]]
    elif letter == " ":
        return [[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0],[0,0,0,0,0,0,0]]
    elif letter == "!":
        return [[0,0,1,1,0,0,0],[0,1,0,0,1,0,0],[0,0,1,0,0,1,0],[0,1,0,0,1,0,0],[0,0,1,1,0,0,0]]
    elif letter == "?":
        return [[0,0,1,1,0,0,0],[0,1,1,1,1,0,0],[0,0,1,1,1,1,0],[0,1,1,1,1,0,0],[0,0,1,1,0,0,0]]
    elif letter == "$":
        return [[0,1,1,1,1,1,1],[0,1,1,1,1,1,0],[0,1,1,1,1,1,0],[0,1,1,1,1,1,0],[0,1,1,1,1,1,0]]

hexcolorlist = ['#de1616','#de6f16','#dede16','#16de16','#16dede','#166fde','#1616de','#6f16de','#de16de','#de166f']

#de1616 - (222,   22, 22) - red
#dede16 - (222,  222, 22) - yellow
#16de16 - (22,   222, 22) - green
#16dede - (22,   222, 222) - cyan
#1616de - (22,    22, 222) - blue
#de16de - (222,   22, 222) - magenta)

def text2arraywithcolor(text):
    #create gradient color index list from red to magenta and repeat.
    #3 list items, [0] and [1] value is x and y (of the picounicord LED matrix),
    #while [2] value is color in hex
    colorindexarray = []
    for colorindex in range (0,math.ceil((len(text)*6+33)/4),1):
        for y in range (6,-1,-1):
            for x in range (0,4,1):
                colorindexarray += [[x+2*(6-y)+4*colorindex,y,hexcolorlist[colorindex%10]]]
    
    #create text array with [x][y] corresponding to picounicorn x,y led address
    #value of [x][y] field is either 1 or 0 indicating led on or off
    textarray = displayoff()
    for i in range(0,len(text)):
        textarray += [[0,0,0,0,0,0,0]]
        textarray += lettercolumn(text[i])
    textarray += displayoff()
    
    #mapping text array with gradient color array to have color effect on text
    for xxx in range (16,len(text)*6+16,1):
        for yyy in range (1,6,1):
            resultx = [search for search in colorindexarray if search[0] == xxx]
            resulttotal = [search2 for search2 in resultx if search2[1] == yyy]
            if resulttotal != [] and textarray[xxx][yyy] == 1:
                textarray[xxx][yyy] = resulttotal[0][2]

    return textarray

def lightupdisplay(ledmatrix,text):
    for xx in range (0,16,1):
        for yy in range (1,6,1):
            if ledmatrix[xx][yy] == 0:
                display.set_pixel(xx,yy,0,0,0)
            else:
                hexvalue = ledmatrix[xx][yy].lstrip('#')
                rgb = tuple(int(hexvalue[i:i+2], 16) for i in (0, 2, 4))
                display.set_pixel(xx,yy,rgb[0],rgb[1],rgb[2])

text = "BLUE BIN"

textarraywithcolor = text2arraywithcolor(text)

#while utime.localtime()[6] == 3:
while True:
    for i in range (0,len(text)*6+33-16,1):
        lightupdisplay(textarraywithcolor[i:i+16],text)