CSV,DictWriter,unicode和utf-8

Question

我遇到了DictWriter和非ascii字符的问题.我的问题的简短版本:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import codecs
import csv

f = codecs.open("test.csv", 'w', 'utf-8')
writer = csv.DictWriter(f, ['field1'], delimiter='\t')
writer.writerow({'field1':u'å'.encode('utf-8')})
f.close()

给这个回溯:

Traceback (most recent call last):
File "test.py", line 10, in <module>writer.writerow({'field1':u'å'.encode('utf-8')})
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/csv.py", line 124, in writerow
return self.writer.writerow(self._dict_to_list(rowdict))
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/codecs.py", line 638, in write
return self.writer.write(data)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/codecs.py", line 303, in write data, consumed = self.encode(object, self.errors)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 0: ordinal not in range(128)

我有点迷失,因为DictWriter应该能够使用我在文档中读到的UTF-8.

Answer 1

你获得的对象在其方法中需要codecs.open一个unicode字符串write- 这就是重点. csv.DictWriter当然是用utf8编码的字节串来调用该方法,而不是异常.

将f创作转变为f = open("test.csv", 'wb')(codecs从图片中删除),事情应该运转得很好.