Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #28804

Re: Is there any difference between print 3 and print '3' in Python ?

Show key headers only | View raw

On Sun, Sep 9, 2012 at 11:33 PM, Dwight Hutto <dwightdhutto@gmail.com> wrote:
>
>
> On Sun, Sep 9, 2012 at 10:41 AM, Ian Foote <ian@feete.org> wrote:
>>
>> On 09/09/12 14:23, iMath wrote:
>>>
>>> 在 2012年3月26日星期一UTC+8下午7时45分26秒，iMath写道：
>>>>
>>>> I know the print statement produces the same result when both of these
>>>> two instructions are executed ,I just want to know Is there any difference
>>>> between print 3 and print '3' in Python ?
>>>
>>> thx everyone
>>
>>
>
> Here's a future import though I used,so I can use the planned 3 with a 2x
> python version in the command line interpreter:
>
> Microsoft Windows [Version 6.1.7600]
> Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
>
> C:\Users\david>c:\python26\python.exe
> Python 2.6.6 (r266:84297, Aug 24 2010, 18:46:32) [MSC v.1500 32 bit (Intel)]
> on
> win32
> Type "help", "copyright", "credits" or "license" for more information.
>>>> exit()
>
> C:\Users\david>c:\python27_64\python.exe
> Python 2.7.2 (default, Jun 12 2011, 14:24:46) [MSC v.1500 64 bit (AMD64)] on
> win
> 32
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import __future__
>>>> x = 3
>>>> y = '3'
>>>> print(x)
> 3
>>>> print(y)
> 3
>>>>
>>>> type(x)
> <type 'int'>
>>>> type(y)
> <type 'str'>
>
>>>> z = '%i' % (3)
>>>> type(z)
> <type 'str'>
>>>>
>
> In other words type(value), and find out the difference.
> --
> Best Regards,
> David Hutto
> CEO: http://www.hitwebdevelopment.com
>

Somewhat OT, but __future__ doesn't work like that. You have to import
the specific features you want to use.

Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> print 3
3
>>> import __future__
>>> print 3
3
>>> from __future__ import print_function
>>> print 3
  File "<stdin>", line 1
    print 3
          ^
SyntaxError: invalid syntax

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Is there any difference between print 3 and print '3' in Python ? iMath <redstone-cold@163.com> - 2012-09-09 06:23 -0700
  Re: Is there any difference between print 3 and print '3' in Python ? Ian Foote <ian@feete.org> - 2012-09-09 15:41 +0100
  Re: Is there any difference between print 3 and print '3' in Python ? Benjamin Kaplan <benjamin.kaplan@case.edu> - 2012-09-09 23:55 -0700
  Re: Is there any difference between print 3 and print '3' in Python ? Terry Reedy <tjreedy@udel.edu> - 2012-09-10 03:16 -0400

csiph-web