我得到了一个python脚本的问题。 我们想做光绘画,除了剧本之外,它们都是有效的。 总是有这个错误。这是代码中的最后一行。没有这条线没有任何反应。这里的错误:IndexError:列表索引超出范围showPicture(sys.argv [1],strip)
File "showImage.py", line 49, in <module> showPicture(sys.argv[1], strip) IndexError: list index out of range
下面的代码:
import time
from neopixel import *
from PIL import Image
import sys
# see also https://learn.adafruit.com/neopixels-on-raspberry-pi/overview
# LED strip configuration:
LED_COUNT = 50 # Number of LED pix.
LED_PIN = 18 # GPIO pin connected to the pix (must support PWM!).
LED_FREQ_HZ = 800000 # LED signal frequency in hertz (usually 800khz)
LED_DMA = 5 # DMA channel to use for generating signal (try 5)
LED_INVERT = False # True to invert the signal (when using NPN transistor
level shift)
# method to blank all LEDs
def blankLine():
for x in range(LED_COUNT):
strip.setPixelColorRGB(x, 0,0,0)
strip.show()
# method to resize picture and show in column per column on the led strip
def showPicture(filename, strip):
blankLine()
# open file
img = Image.open(filename).convert("RGB")
# resize file
newWidth = float(img.size[0])/float(img.size[1])*LED_COUNT
img = img.resize((int(newWidth), LED_COUNT))
width = img.size[0]
height = img.size[1]
pix = img.load()
for x in range(width):
for y in range(height):
strip.setPixelColorRGB(y, pix[x,y][0], pix[x,y][1], pix[x,y][2])
strip.show()
time.sleep(0.3)
blankLine()
# main function - start of the program - you have to provide an image name
as an argument
# Create NeoPixel object with appropriate configuration.
strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA,
LED_INVERT)
# Intialize the library (must be called once before other functions).
strip.begin()
showPicture(sys.argv[1], strip)
我不知道什么是错?已解决
新问题:LED显示错误的颜色。但奇怪的是,这只是在这个脚本。如果使用其他脚本,它会显示正确的颜色。例如,当它显示紫色时,它是蓝色的。
请显示正确缩进的Python代码。所有左对齐都是不可读的。 – lit
新问题=新问题... – Trolldejo