How to extract countries from a text?

问题

I use Python 3 (I also have Python 2 installed) and I want to extract countries or cities from a short text. For example, text = "I live in Spain" or text = "United States (New York), United Kingdom (London)".

The answer for countries:

1. Spain
2. [United States, United Kingdom]

I tried to install geography but I am unable to run pip install geography. I get this error:

Collecting geography Could not find a version that satisfies the requirement geography (from versions: ) No matching distribution found for geography

It looks like geography only works with Python 2.

I also have geopandas, but I don't know how to extract the required info from text using geopandas.

回答1:

you could use pycountry for your task (it also works with python 3):

pip install pycountry

import pycountry
text = "United States (New York), United Kingdom (London)"
for country in pycountry.countries:
    if country.name in text:
        print(country.name)

回答2:

There is a newer version for this library that supports python3 named geograpy3

pip install geograpy3

It allows you to extract place names from a URL or text, and add context to those names -- for example distinguishing between a country, region or city.

Example:

import geograpy
import nltk
nltk.download('punkt')
nltk.download('averaged_perceptron_tagger')
nltk.download('maxent_ne_chunker')
nltk.download('words')
url = 'http://www.bbc.com/news/world-europe-26919928'
places = geograpy.get_place_context(url=url)

You can find more details under this link:

来源：https://stackoverflow.com/questions/48607339/how-to-extract-countries-from-a-text