Textwrap
The textwrap module provides two convenient functions: wrap() and fill().
textwrap.wrap()
The wrap() function wraps a single paragraph in text (a string) so that every line is width characters long at most.
It returns a list of output lines.
>>> import textwrap
>>> string = "This is a very very very very very long string."
>>> print textwrap.wrap(string,8)
['This is', 'a very', 'very', 'very', 'very', 'very', 'long', 'string.']
textwrap.fill()
The fill() function wraps a single paragraph in text and returns a single string containing the wrapped paragraph.
>>> import textwrap
>>> string = "This is a very very very very very long string."
>>> print textwrap.fill(string,8)
This is
a very
very
very
very
very
long
string.