Program Fails In Python 2.7.8 But Runs In Python 3.4.1

I've ran this code using Python 3.4.1 and it works, but if I use Python 2.7.8 it fails, why? i=1 while i<10: for x in(1,2,3,4,5,6,7,8,9): print (i*x,'\t',end='')

Solution 1:

In fact, print is a function in Python 3 but not Python 2. In Python 2, you need to remove () and end. As an alternative, you can add from __future__ import print_function into your code in Python 2 to use print as in Python 3.

Solution 2:

Amongst the breaking changes between Python versions 2.x and 3.x is that print is a function - in 2.x it was a statement. You have two options, either use:

from __future__ import print_function

at the top of your script to use the new function in 2.x, or have a separate 2.x version with the old syntax:

print '{0}\t'.format(i * x), # note trailing comma to suppress newline

The former is much easier, in my opinion.

Note that the default sep equivalent for the 2.x print statement is a single space, so the naïve version

print i * x, '\t',

would include an extra space before the tab. Also, note that your 3.x version can be slightly simpler:

print(i * x, end='\t')