为什么在Python 2.4中使用Unicode数据而不是在2.7中得到ASCII编码错误? [英] Why do I get a ASCII encoding error with Unicode data in Python 2.4 but not in 2.7?
问题描述
UnicodeEncodeError:'ascii'编解码器不能对位置1-4中的字符进行编码:ordinal不在范围(128)
中。现在的版本2.4和2.7之间有什么变化?虽然我没有找到任何提及的elswhere, Python 2.7自动将文本转换为终端编码,而不是像预期那样抛出错误。
Python 2.7:
> echo $ LANG
en_US.UTF-8
> python -c'import sys;打印sys.getdefaultencoding()'
ascii
> python -c'import sys; sys.stdout.write(u\\\Σ)'
Σ
> python -c'import sys; sys.stdout.write(u\\\Σ.encode(utf8))'
Σ
Python 2.6 (另一个框)
> echo $ LANG
en_US.UTF-8
> python -c'import sys;打印sys.getdefaultencoding()'
ascii
> python -c'import sys; sys.stdout.write(u\\\Σ)'
追溯(最近的最后一次调用):
文件< string>,第1行,< module>
UnicodeEncodeError:'ascii'编解码器不能编码字符u'\\\Σ'在位置0:序号不在范围(128)
> python -c'import sys; sys.stdout.write(u\\\Σ.encode(utf8))'
Σ
在任何情况下,在输出之前的数据上的.encode(utf8)应该避免这个问题。
I have a program that, when run in Python 2.7, produces proper Unicode output to the standard output. When run in Python 2.4, I get UnicodeEncodeError: 'ascii' codec can't encode characters in position 1-4: ordinal not in range(128)
. What changed between version 2.4 and 2.7 that this works now?
Although I could not find any mention of it elswhere, it appears that Python 2.7 is automatically converting text to the terminal encoding, instead of throwing an error as expected.
Python 2.7:
> echo $LANG
en_US.UTF-8
> python -c 'import sys; print sys.getdefaultencoding()'
ascii
> python -c 'import sys; sys.stdout.write(u"\u03A3")'
Σ
> python -c 'import sys; sys.stdout.write(u"\u03A3".encode("utf8"))'
Σ
Python 2.6 (on another box)
> echo $LANG
en_US.UTF-8
> python -c 'import sys; print sys.getdefaultencoding()'
ascii
> python -c 'import sys; sys.stdout.write(u"\u03A3")'
Traceback (most recent call last):
File "<string>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec cant encode character u'\u03a3' in position 0: ordinal not in range(128)
> python -c 'import sys; sys.stdout.write(u"\u03A3".encode("utf8"))'
Σ
In any case, an .encode("utf8") on the data before output should avoid the issue.
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