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[Python] Parse Accept-Language in HTTP Request Header
source link: http://siongui.github.io/2012/10/11/python-parse-accept-language-in-http-request-header/
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The Accept-Language field in HTTP Request header is important for determining user locale. In this post, we will show how to parse Accept-Language field using Python. The following parseAcceptLanguage function takes Accept-Language field as argument, and returns a Python list which contains pairs of (locale, q). The order of (locale, q) pairs are determined by locale preference of the user (highest preference first).
Python Parse Accept-Language
def parseAcceptLanguage(acceptLanguage):
languages = acceptLanguage.split(",")
locale_q_pairs = []
for language in languages:
if language.split(";")[0] == language:
# no q => q = 1
locale_q_pairs.append((language.strip(), "1"))
else:
locale = language.split(";")[0].strip()
q = language.split(";")[1].split("=")[1]
locale_q_pairs.append((locale, q))
return locale_q_pairs
Example Usage and Output
>>> print(parseAcceptLanguage('da, en-gb;q=0.8, en;q=0.7'))
[('da', '1'), ('en-gb', '0.8'), ('en', '0.7')]
>>> print(parseAcceptLanguage('zh, en-us; q=0.8, en; q=0.6'))
[('zh', '1'), ('en-us', '0.8'), ('en', '0.6')]
>>> print(parseAcceptLanguage('es-mx, es, en'))
[('es-mx', '1'), ('es', '1'), ('en', '1')]
>>> print(parseAcceptLanguage('de; q=1.0, en; q=0.5'))
[('de', '1.0'), ('en', '0.5')]
To know how to detect user locale/language according to Accept-Language field in HTTP request header, please refer to the post "Detect User Language (Locale) on Google App Engine Python" [4].
References:
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