python - 字计数器(编程导论2(python))

Question

我试图寻找这个问题的答案，但没有成功。 (顺便说一句，我 15 岁，基本上刚开始使用 Python) 这是我的程序:

all = []

count = {}

line = input("Enter line: ")

while line:

    word = line.split()

    line = input("Enter line: ")

for w in word:

    if w in count:

        count[w] += 1

    else:

        count[w] = 1

for word in sorted(count):

    print(word, count[word])

这是我得到的答案:

Enter line: which witch
Enter line: is which
Enter line: 
is 1
which 1

我应该在什么时候得到:

Enter line: which witch
Enter line: is which
Enter line: 
is 1
which 2
witch 1

拜托，有人可以帮忙吗？

Answer 1

for w in word: 循环在while line: 循环外执行。这意味着首先为每个 line 生成单个 word 列表，然后跳过每个这样的列表 end executes for w in word: only for last 单词 列表。

要修复它，请更改 whoole for w in word: 循环的缩进(这一行和下面的 4 行)。向右移动 4 个空格。

all = []
count = {}
line = input("Enter line: ")
while line:
    print("line is :" + line )
    word = line.split()
    line = input("Enter line: ")
    for w in word:
        if w in count:
            count[w] += 1
        else:
            count[w] = 1
for word in sorted(count):
    print(word, count[word])

是因为indentation in python is used to determine grouping of statements .