Python(图像库): Resample string as argument

Question

Python初学者问题。下面的代码应该可以解释我的问题:

import Image

resolution = (200,500)
scaler = "Image.ANTIALIAS"

im = Image.open("/home/user/Photos/DSC00320.JPG")

im.resize(resolution , scaler)

结果:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 1255, in resize
    raise ValueError("unknown resampling filter")
ValueError: unknown resampling filter

这个有效:

im.resize(resolution , Image.ANTIALIAS)

Answer 1

好吧，那么 Image.ANTIALIAS 不是一个字符串，所以不要把它当作一个:

scaler = Image.ANTIALIAS