为什么在此代码中使用 > 会产生错误？

Question

正在尝试使用字典中的 .get 函数。

我还没有尝试太多，因为我还不知道那么多。

name = input("Enter file: ")
handle = open(name)
counts = dict()
for line in handle:
    words = line.split()
    for word in words:
        counts[word] = counts.get(word, 0) + 1

bigcount = None
bigword = None
for word, count in counts.items():
    if bigcount is None or count > bigcount:
        bigcount = word
        bigword = count

我得到这个结果：

 if bigcount is None or count > bigcount:
TypeError: '>' not supported between instances of 'int' and 'str'

它应该产生的是一个数字。怎么了？

Answer 1

你的作业倒退了。您实际上使用 .get 是正确的。

bigcount = None
bigword = None
for word, count in counts.items():
    if bigcount is None or count > bigcount:
        bigcount = count     # Switched these two
        bigword = word

Answer 2

如果你使用collections.Counter而不是重新实现它，你将没有机会犯这样的错误。

from collections import Counter


counts = Counter()
name = input("Enter file: ")
with open(name) as handle:
    for line in handle:
        counts.update(line.split())

bigword, bigcount = counts.most_common(1)[0]

为什么在此代码中使用 > 会产生错误？

Why do the use of > in this code produce an error?

python

items

counting