为什么在此代码中使用 > 会产生错误？ [关闭]

Question

试图在字典中使用.get 函数。

我没有尝试太多，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'

它应该产生一个数字。怎么了？

Answer 1

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]

Answer 2

你的作业倒过来了。你实际上正确地使用了.get。

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