how to use from future import print_function
I am new at programming with python, and I am trying to print out with a separator and end but it is still giving me a syntax error I am using python 2.7 I am coding from vim editor and here is my code:
import sys, os, time from __future__ import print_function for x in range(0,10): print x, sep=' ', end='' time.sleep(1)
please, help. And using my code, show me where I should actually use the
from __future__ import print_function Thank you
First of all,
from __future__ import print_function needs to be the first line of code in your script (aside from some exceptions mentioned below). Second of all, as other answers have said, you have to use
from __future__ import print_function; to bring the
from __future__ import print_function import sys, os, time for x in range(0,10): print(x, sep=' ', end='') # No need for sep here, but okay :) time.sleep(1)
__future__ statements need to be near the top of the file because they change fundamental things about the language, and so the compiler needs to know about them from the beginning. From the documentation:
A future statement is recognized and treated specially at compile time: Changes to the semantics of core constructs are often implemented by generating different code. It may even be the case that a new feature introduces new incompatible syntax (such as a new reserved word), in which case the compiler may need to parse the module differently. Such decisions cannot be pushed off until runtime.
The documentation also mentions that the only things that can precede a
__future__ statement are the module docstring, comments, blank lines, and other future statements.