利用python3统一将网站图片转换为webp格式

为了统一将图片转换为webp格式，这里写了python3脚本，统一进行转换。

#coding:utf-8
from os import walk
import os

#查找所有png jpg jpeg的图片路径
def all_path(dirname):
	result = []#所有的文件
	for maindir, subdir, file_name_list in os.walk(dirname):
		for filename in file_name_list:
			if (filename.find('.') >= 0) and (filename.find('.webp') < 0):
				apath = os.path.join(maindir,filename)
                result.append(apath)
	print (len(result))
	return result


def searchAllUnConvertFiles(imagePathArray):
	result = []#所有的文件
	for imagePath in imagePathArray:
		webp_path = str(imagePath + ".webp")
		if os.path.exists(webp_path) == False:
			result.append(imagePath)
	print (len(result))
	return result


def converFiles(imagePathArray):
	for imagePath in imagePathArray:
		webp_path = str(imagePath + ".webp")
		shell = str("cwebp " + imagePath + " -o " + webp_path)
		os.system(shell)
		print ('转换成功: %s',webp_path)


path = '/home/'
allPath = all_path(path)
UnConvertFiles = searchAllUnConvertFiles(allPath)
print (len(UnConvertFiles))

converFiles(UnConvertFiles)