网上找了很多资料，比如通过网站免费转换，但是突然发现需要收费，我用python难得到我吗？
import os
from PIL import Image
original_path = u'/media/spring/文档/PHZ02000128/'
saved_path = u'/media/spring/文档/PHZ02000128_png/'
counts = 0
files = os.listdir(original_path)
for file in files:
if file.endswith('tif'):
tif_file = os.path.join(original_path, file)
file = file[:-3] + 'png'
png_file = os.path.join(saved_path, file)
im = Image.open(tif_file)
im.save(png_file)
print(png_file)
counts += 1
print('%d done' %counts)
