NLTK PortStemmer缺少位置参数 [英] NLTK PortStemmer missing positional argument

问题描述

我一直在尝试nltk，但我不明白我的错误是什么.

我尝试过:

from nltk.stem import PorterStemmer

stemmer = PorterStemmer
examples = ["cars", "eating", "quickly"]

for w in examples:
    print(stemmer.stem(w))

Python返回此代码:

TypeError: stem() missing 1 required positional argument: 'word'

有人可以向我解释我做错了什么吗? 预先感谢！

解决方案

将()添加到PorterStemmer，因为它是类实例，并且应该可以工作:

from nltk.stem import PorterStemmer

stemmer = PorterStemmer()
examples = ["cars", "eating", "quickly"]

for w in examples:
    print(stemmer.stem(w))

标准输出:

car
eat
quickli

I have been experimenting with nltk, and I do not understand what my mistake is.`

I tried this:

from nltk.stem import PorterStemmer

stemmer = PorterStemmer
examples = ["cars", "eating", "quickly"]

for w in examples:
    print(stemmer.stem(w))

And Python returns this:

TypeError: stem() missing 1 required positional argument: 'word'

Could anyone explain to me what I am doing wrong? Thanks in advance!

解决方案

Add () to PorterStemmer since it is a class instantiation and it should work:

from nltk.stem import PorterStemmer

stemmer = PorterStemmer()
examples = ["cars", "eating", "quickly"]

for w in examples:
    print(stemmer.stem(w))

stdout:

car
eat
quickli

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