使用Python从文本中删除非英语单词
问题描述：
我正在使用python进行数据清理练习，正在清理的文本包含我要删除的意大利语单词。我一直在网上搜索是否可以使用nltk之类的工具包在Python上执行此操作。
I am doing a data cleaning exercise on python and the text that I am cleaning contains Italian words which I would like to remove. I have been searching online whether I would be able to do this on Python using a tool kit like nltk.
例如，给出一些文字：
"Io andiamo to the beach with my amico."
我想留下来：
"to the beach with my"
到海滩有人知道吗如何做到这一点？
任何帮助将不胜感激。
Does anyone know of a way as to how this could be done? Any help would be much appreciated.
答
您可以使用NLTK中的个单词语料库：
You can use the words corpus from NLTK:
import nltk
words = set(nltk.corpus.words.words())
sent = "Io andiamo to the beach with my amico."
" ".join(w for w in nltk.wordpunct_tokenize(sent) \
if w.lower() in words or not w.isalpha())
# 'Io to the beach with my'
不幸的是， Io 恰好是一个英语单词。通常，可能很难确定一个单词是否为英语。
Unfortunately, Io happens to be an English word. In general, it may be hard to decide whether a word is English or not.