使用区域设置模块和一些启发式方法：
>>> import locale
>>> locale.setlocale(locale.LC_ALL, '') # set to user's locale, not "C"
'English_Australia.1252'
>>> dec_pt_chr = locale.localeconv()['decimal_point']
>>> if dec_pt_chr == ",":
... list_delimiter = ";"
... else:
... list_delimiter = ","
...
>>> print repr(dec_pt_chr), repr(list_delimiter)
'.' ','
>>> locale.setlocale(locale.LC_ALL, 'French_France.1252')
'French_France.1252'
>>> dec_pt_chr = locale.localeconv()['decimal_point']
>>> if dec_pt_chr == ",":
... list_delimiter = ";"
... else:
... list_delimiter = ","
...
>>> print repr(dec_pt_chr), repr(list_delimiter)
',' ';'
>>>
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