'''
pip install pillow
'''
from io import BytesIO
from PIL import Image
def pic_compress(pic_path, out_path, target_size, quality=90, step=5):
# 读取图片bytes
with open(pic_path, 'rb') as f:
pic_byte = f.read()
current_size = len(pic_byte) / 1024 # 图片当前质量大小
print("图片压缩前的大小为(KB)：", current_size)
while current_size > target_size: # 当达到目标压缩大小后退出循环
img = Image.open(BytesIO(pic_byte))
buf = BytesIO()
img.save(buf, format=img.format, quality=quality)
pic_byte = buf.getvalue()
if quality - step < 0: # 以降低到最小质量
break
quality -= step
current_size = len(pic_byte) / 1024
# 保存图片
with open(out_path, 'wb') as f:
f.write(pic_byte)
return len(pic_byte) / 1024
def main():
pic_size = pic_compress('zy.jpg', 'new_zy.jpg', target_size=100)
print("图片压缩后的大小为(KB)：", pic_size)
if __name__ == '__main__':
main()