Если вам нужно определить язык в ответ на действие пользователя, вы можете использовать google ajax language API :
#!/usr/bin/env python
import json
import urllib, urllib2
def detect_language(text,
userip=None,
referrer="http://stackoverflow.com/q/4545977/4279",
api_key=None):
query = {'q': text.encode('utf-8') if isinstance(text, unicode) else text}
if userip: query.update(userip=userip)
if api_key: query.update(key=api_key)
url = 'https://ajax.googleapis.com/ajax/services/language/detect?v=1.0&%s'%(
urllib.urlencode(query))
request = urllib2.Request(url, None, headers=dict(Referer=referrer))
d = json.load(urllib2.urlopen(request))
if d['responseStatus'] != 200 or u'error' in d['responseData']:
raise IOError(d)
return d['responseData']['language']
print detect_language("Python - can I detect unicode string language code?")
Выход
en
Предел по умолчанию 100000 символов / день (не более 5000 одновременно).
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import json
import urllib, urllib2
from operator import itemgetter
def detect_language_v2(chunks, api_key):
"""
chunks: either string or sequence of strings
Return list of corresponding language codes
"""
if isinstance(chunks, basestring):
chunks = [chunks]
url = 'https://www.googleapis.com/language/translate/v2'
data = urllib.urlencode(dict(
q=[t.encode('utf-8') if isinstance(t, unicode) else t
for t in chunks],
key=api_key,
target="en"), doseq=1)
# the request length MUST be < 5000
if len(data) > 5000:
raise ValueError("request is too long, see "
"http://code.google.com/apis/language/translate/terms.html")
#NOTE: use POST to allow more than 2K characters
request = urllib2.Request(url, data,
headers={'X-HTTP-Method-Override': 'GET'})
d = json.load(urllib2.urlopen(request))
if u'error' in d:
raise IOError(d)
return map(itemgetter('detectedSourceLanguage'), d['data']['translations'])
Теперь вы можете запросить определение языкаявно :
def detect_language_v2(chunks, api_key):
"""
chunks: either string or sequence of strings
Return list of corresponding language codes
"""
if isinstance(chunks, basestring):
chunks = [chunks]
url = 'https://www.googleapis.com/language/translate/v2/detect'
data = urllib.urlencode(dict(
q=[t.encode('utf-8') if isinstance(t, unicode) else t
for t in chunks],
key=api_key), doseq=True)
# the request length MUST be < 5000
if len(data) > 5000:
raise ValueError("request is too long, see "
"http://code.google.com/apis/language/translate/terms.html")
#NOTE: use POST to allow more than 2K characters
request = urllib2.Request(url, data,
headers={'X-HTTP-Method-Override': 'GET'})
d = json.load(urllib2.urlopen(request))
return [sorted(L, key=itemgetter('confidence'))[-1]['language']
for L in d['data']['detections']]
Пример:
print detect_language_v2(
["Python - can I detect unicode string language code?",
u"матрёшка",
u"打水"], api_key=open('api_key.txt').read().strip())
Выход
[u'en', u'ru', u'zh-CN']