New features of Python

Http://www.jb51.net/article/67699.htm

Use the Format function in Python for formatting strings: http://www.jb51.net/article/63672.htm

Http://www.runoob.com/python/att-string-format.html

The field width and precision representation of a number are basically the same, the field width and precision of the string refer to the link above, the following is an example

>>> ' {0:.5s} '. Format (' Guido van Rossum ')
' Guido van Rossum '

New features of Python