字符串格式錯誤

Question

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

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

當我刪除該行Netbeans的開頭自動插入：

from distutils.command.bdist_dumb import format 

本身導致錯誤

ImportError: cannot import name format 

我在做什麼錯在這裏？

Answer 1

您必須運行較舊版本的Python。這確實在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' 

你會的，但是，在Python 2.5.4得到這個錯誤：

$ 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' 

這個功能似乎已經被移植到Python 2.6，所以你不會在那裏得到這個錯誤。您必須運行Python < 2.6。