尝试在PIL python库中执行以下操作时:
Image.open('Apple.gif').save('Apple.pgm')
代码失败了:
Traceback (most recent call last):
File "/home/eran/.eclipse/org.eclipse.platform_3.7.0_155965261/plugins/org.python.pydev_2.6.0.2012062818/pysrc/pydevd_comm.py", line 765, in doIt
result = pydevd_vars.evaluateExpression(self.thread_id, self.frame_id, self.expression, self.doExec)
File "/home/eran/.eclipse/org.eclipse.platform_3.7.0_155965261/plugins/org.python.pydev_2.6.0.2012062818/pysrc/pydevd_vars.py", line 376, in evaluateExpression
result = eval(compiled, updated_globals, frame.f_locals)
File "<string>", line 1, in <module>
File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 1439, in save
save_handler(self, fp, filename)
File "/usr/lib/python2.7/dist-packages/PIL/PpmImagePlugin.py", line 114, in _save
raise IOError, "cannot write mode %s as PPM" % im.mode
IOError: cannot write mode P as PPM
代码可以正常转换为BMP,但JPG也失败了。 奇怪的是,一个不同的文件(JPG到PGM),工作正常。
其他格式转换。那就是:
Image.open('Apple.gif').save('Apple.bmp')
作品。
知道为什么吗?
答案 0 :(得分:11)
您需要将图片转换为RGB
模式才能使其正常工作。
im = Image.open('Apple.gif')
im = im.convert('RGB')
im.save('Apple.pgm')