为什么我的%s格式说明符没有在此代码段中捕获？

Question

mconfigQuantity = int(raw_input('Enter the number of (m)achine-configurations that you will need: '))
numberOfmconfig = 1


for mconfigs in range(1,mconfigQuantity+1):
    # %s conditional for mcidentifier
    STRINGnumberOfmconfig = str(numberOfmconfig)
    if STRINGnumberOfmconfig[-1] == '1':
        suffix = 'st'
    elif STRINGnumberOfmconfig[-1] == '2':
        suffix = 'nd'
    elif STRINGnumberOfmconfig[-1] == '3':
        suffix = 'rd'
    else: suffix = 'th'
    finalConfigName = STRINGnumberOfmconfig + suffix
    mcidentifier = raw_input('Enter the letter of your %s (m)achine-configuration: ') % (finalConfigName)
    numberOfmconfig = numberOfmconfig + 1






print mconfig()

我现在已经编写并重写了几次这个片段,对于我为什么打印'%s'而不是用我为它指定的数据替换它是没有意义的.我找不到任何表明它无法正常工作的东西.

Answer 1

它应该是

mcidentifier = raw_input(
    'Enter the letter of your %s (m)achine-configuration: ' % finalConfigName)

您在%运算符之前关闭了括号,因此将其应用于结果字符串,即返回的字符串raw_input.

另请注意,在新代码中,建议使用新的字符串格式化语法:

mcidentifier = raw_input(
 'Enter the letter of your {} (m)achine-configuration: '.format(finalConfigName))