Why does Python2.7 insist on Python3 print statement?

Question

I was trying to see how nose & unittesting were being used in a package I'm learning about. This package uses nosetester, which is provided with numpy (why this is done also confuses me). My nosetester.py is in /usr/local/lib/python2.7/dist-packages/numpy/testing/. I am running Python 2.7.6. However, when I add a tracing statement of the form:

print "Hi"

to the __init__ method of the NoseTester class, I get a syntax error:

  File "/usr/local/lib/python2.7/dist-packages/numpy/testing/nosetester.py", line 182
print "Hi"
         ^

SyntaxError: invalid syntax

When I use

print ("Hi")

things work fine. I know my Python interpreter is using 2.7.6:

$ python
Python 2.7.6 (default, Mar 22 2014, 22:59:56) 
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.

This leaves me wondering why the insistence on Python3 and is there anywhere else that I might run into this?

Is there a from __future__ import print_function line in nosetester.py? — senshin
– senshin, Commented Jan 28, 2015 at 15:39

senshin · Accepted Answer · 2015-01-28 17:59:15Z

2

Looks like nosetester.py has a line like

from __future__ import print_function

This makes the Python2-style print statement print "foo" unavailable and requires you to use the Python3-style print function print("foo") instead.

edited Jan 28, 2015 at 17:59

answered Jan 28, 2015 at 15:42

senshin

10.5k7 gold badges49 silver badges62 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Why does Python2.7 insist on Python3 print statement?

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related