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Asked: 2026-05-13T23:05:18+00:00

Using the code print(‘{0} is not’.format(‘That that is not’)) in Python 3.1.1, I get

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Using the code print('{0} is not'.format('That that is not')) in Python 3.1.1, I get the following error:

AttributeError: 'str' object has no attribute 'format'

when I delete the line Netbeans automatically inserted at the beginning:

from distutils.command.bdist_dumb import format

which itself causes an error of

ImportError: cannot import name format

What am I doing wrong here?

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1 Answer

  1. Editorial Team

    You must be running an older version of Python. This does work in Python 3.1.1+:

    $ python3
Python 3.1.1+ (r311:74480, Nov  2 2009, 14:49:22) 
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> '{0} is not'.format('That that is not')
'That that is not is not'

    You will, however, get this error in Python 2.5.4:

    $ python2.5
Python 2.5.4 (r254:67916, Jan 20 2010, 21:44:03) 
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> '{0} is not'.format('That that is not')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'str' object has no attribute 'format'

    This feature seems to have been backported to Python 2.6, so you won’t get this error there. You must be running Python < 2.6.

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