import textwrap
print textwrap.wrap(“123456789”, 2)
#prints [‘12’, ‘34’, ‘56’, ‘78’, ‘9’]
注意：小心空格等-这可能是您想要的，也可能不是。
"""Wrap a single paragraph of text, returning a list of wrapped lines. Reformat the single paragraph in 'text' so it fits in lines of no more than 'width' columns, and return a list of wrapped lines. By default, tabs in 'text' are expanded with string.expandtabs(), and all other whitespace characters (including newline) are converted to space. See TextWrapper class for available keyword args to customize wrapping behaviour. """
