使用PIL库，python3安装需要使用

pip install pillow

from PIL import Image
import os
import re

imgPath = './img/'
webpReg = r'webp$'

def getAllFile (filePath):
 files = os.listdir(filePath)
 return files

def handleConversion (fileName):
 fileName = imgPath + fileName
 print('fileName--->', fileName)
 saveName = fileName.replace('webp', 'gif')
 print('saveName--->', saveName)
 im = Image.open(fileName)
 im.save(saveName, 'gif', save_all=True)

def main():
 files = getAllFile('./img')
 for fileName in files:
  gifName = fileName.replace('.webp', '.gif')
  # webp格式且未转过的才需要转
  if re.findall(webpReg, fileName) != [] and (gifName not in files):
   handleConversion(fileName)

if __name__ == '__main__':
 main()

图片文件放在img目录下

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