Question

我正在接受老师的编码挑战，由于某种原因，在实现自定义字符串输入以供用户添加自己的字符串之前，我无法使最后几行代码起作用。

我尝试完全更改编码类型，但仍然无法正常工作，每次都遇到相同的问题。

import string 
strg = "peter piper picked a peck of pickled peppers. a peck of pickeled 
peppers peter piper picked. if piper piper picked a peck of pickeled 
peppers, wheres the peck of pickled peppers peter piper picked"

for i in range (0, len (strg)):
    if str[i] in ('.'):  
        count = count + 1;
    if str[i] in (','):  
        count2 = count2 + 1;
    if str[i] in ('?'):  
        count3 = count3 + 1;
    if str[i] in ('!'):  
        count4 = count4 + 1;


print ("Total number of full stops string: ");  
print (count);

我希望输出：句号总数：x 但是目前它的输出是：

Answer 1

您不小心将'str'用作字符串名称而不是strg

count = count2 = count3 = count4 = 0

strg = '''peter piper picked a peck of pickled peppers. a peck of pickeled 
peppers peter piper picked. if piper piper picked a peck of pickeled 
peppers, wheres the peck of pickled peppers peter piper picked'''

for i in range (0, len (strg)):
    if strg[i] in ('.'):  
        count = count + 1;
    if strg[i] in (','):  
        count2 = count2 + 1;
    if strg[i] in ('?'):  
        count3 = count3 + 1;
    if strg[i] in ('!'):  
        count4 = count4 + 1;


print ("Total number of full stops string: ");  
print (count);

如何修复TypeError：“类型”对象不可下标

1 个答案: