python - Python 中 cStringIO.StringIO.write 和 String.StringIO.write 的区别

Question

我在使用这两个类时得到了不同的结果。

In [15]: StringIO.StringIO().write(u'\u2222')

In [16]: cStringIO.StringIO().write(u'\u2222')
---------------------------------------------------------------------------
UnicodeEncodeError                        Traceback (most recent call last)
<ipython-input-16-a7a28c8bfb39> in <module>()
----> 1 cStringIO.StringIO().write(u'\u2222')

UnicodeEncodeError: 'ascii' codec can't encode character u'\u2222' in position 0: ordinal not in range(128)

有没有人知道为什么以及如何发生？

Answer 1

来自documentation for cStringIO :

Unlike the StringIO module, this module is not able to accept Unicode strings that cannot be encoded as plain ASCII strings.