我在 debian/jessie 框中运行此代码：
from elaphe import barcode
text = 'hello world in barcode'
bc = barcode('pdf417', text, options = dict(
compact = False, eclevel = 5, columns = 13,
rowmult = 2, rows = 3),
margin=20, scale=1)
运行此之后，我执行以下操作：
bc.save('filename.png')
然后得到以下错误：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 1653, in save
self.load()
File "/usr/lib/python2.7/dist-packages/PIL/EpsImagePlugin.py", line 336, in load
self.im = Ghostscript(self.tile, self.size, self.fp, scale)
File "/usr/lib/python2.7/dist-packages/PIL/EpsImagePlugin.py", line 143, in Ghostscript
stdout=subprocess.PIPE)
File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child raise child_exception OSError: [Errno 2]
No such file or directory
如果我在 ubuntu 14.04 框中运行相同的代码，则不会出现此类错误并且可以正常工作。由于我在几篇文章中看到了这个错误，并且有很多包，我可以得出结论，它与 debian 有关，与代码本身无关，甚至与 elaphe python 包无关。最好查找是否有某种路径可以在某处重新定义或符号链接，或者是否有针对此的补丁。
请帮忙。