Python way of printing: with ‘format’ or percent form? [duplicate]

Use the format method, especially if you’re concerned about Python 3 and the future. From the documentation:

The formatting operations described here are modelled on C’s printf()
syntax. They only support formatting of certain builtin types. The
use of a binary operator means that care may be needed in order to
format tuples and dictionaries correctly. As the new
:ref:string-formatting syntax is more flexible and handles tuples and
dictionaries naturally, it is recommended for new code. However, there
are no current plans to deprecate printf-style formatting.