python 为什么我没有得到字典的属性“__getitem__”错误？
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Why am I getting no attribute '__getitem__' error for dictionary?
提问by Viet
Why am I getting no attribute __getitem__error for dictionary:
为什么我没有收到__getitem__字典的属性错误：
Traceback (most recent call last):
File "./thumbnail.py", line 39, in <module>
main()
File "./thumbnail.py", line 19, in main
options['input_pattern']
AttributeError: Values instance has no attribute '__getitem__'
Here's the code:
这是代码：
#!/usr/bin/env python
import os, sys, glob
from PIL import Image
from optparse import OptionParser
def batch_convert(src_dir, input_pattern, output_ext = None, dest_dir = None):
return 0
def main():
print sys.argv
parser = OptionParser()
parser.add_option("-s", "--source-dir", dest="src_dir", help="Source directory to fetch images")
parser.add_option("-d", "--dest-dir", dest="dest_dir", help="Destination directory to writen processed images")
parser.add_option("-i", "--input-pattern", dest="input_pattern", help="Look for files that match some pattern. E.g. *.png or pic*cool*")
parser.add_option("-o", "--output-format", dest="output_ext", help="Output format to save all images. If empty, original format of images is preserved")
(options, args) = parser.parse_args()
print options
options['input_pattern']
if __name__ == "__main__":
main()
回答by Ignacio Vazquez-Abrams
optionsis not a dict:
options不是字典：
print options.input_pattern
回答by idrinkpabst
If you must have a dict, use
如果您必须有一个字典，请使用
options.__dict__
回答by marlow
As another user said, options is not a dictionary. I made this mistake myself.
If I have an option
--file FILE
正如另一位用户所说，选项不是字典。我自己犯了这个错误。如果我有一个选择
--file FILE
Then I can call
然后我可以打电话
option.file
option.file
which returns FILE. It's that easy!
返回文件。就这么简单！
