打印特殊字符

Question

如何在打印功能中打印出字符「％」。以下行失敗。

print "The result is %s out of %s i.e. %d %" % (nominator, denominator, percentage) 

Answer 1

您必須通過執行%%來逃脫%。因此，在你的榜樣，做：

print "The result is %s out of %s i.e. %d %%" % (nominator, denominator, percentage) 
#          ^extra % to escape the one after 

Answer 2

考慮使用format：

>>> n=23.2 
>>> d=1550 
>>> "The result is {:.2f} out of {:.2f} i.e. {:.2%}".format(n,d,n/d) 
'The result is 23.20 out of 1550.00 i.e. 1.50%' 


>>> "The result is {:,.2f} out of {:,.2f} i.e. {:.2%}".format(n,d,n/d) 
'The result is 23.20 out of 1,550.00 i.e. 1.50%' 

如果你的參數是字符串：

>>> "The result is {:,.2f} out of {} i.e. {:.2%}".format(n,str(d),n/d) 
'The result is 23.20 out of 1550 i.e. 1.50%'