字符串格式错误

Question

在Python 3.1.1使用代码print('{0} is not'.format('That that is not'))，我得到以下错误：

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

当我删除该行Netbeans的开头自动插入：

from distutils.command.bdist_dumb import format 

本身导致错误

ImportError: cannot import name format 

我在做什么错在这里？

Answer 1

您必须运行较旧版本的Python。这确实在Python 3.1.1+工作：

$ 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' 

你会的，但是，在Python 2.5.4得到这个错误：

$ 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' 

这个功能似乎已经被移植到Python 2.6，所以你不会在那里得到这个错误。您必须运行Python < 2.6。