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Python has the function for string to test whether all characters are digits: string.isdigit().
In the manual is written:
For 8-bit strings, this method is locale-dependent
How is this method locale-depedent? In what locales are there digits that are outside the 0-9 range?
Also, if this is locale dependent, does python have a method for checking it with a specific locale (i.e. only 0-9 digits).
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The locale module is part of Python's internationalization and localization support library. It provides a standard way to handle operations that may depend on the language or location of a user. For example, it handles formatting numbers as currency, comparing strings for sorting, and working with dates.
Locale refers to country/region and language settings that you can use to customize your program. Some locale-dependent categories include the display formats for dates and monetary values. For more information, see Locale Categories.
isdigit() only returns true for strings (here consisting of just one character each) contains only digits. Because only digits are passed through, int() always works, it is never called on a letter.
Definition and Usage. The isdigit() method returns True if all the characters are digits, otherwise False. Exponents, like ², are also considered to be a digit.
CPython uses the C function "isdigit" for the is_digit method on strings (see stringobject.c). See this related thread: Can isdigit legitimately be locale dependent in C
Apparently, it has to do with superscript digits, like 0xB2 ('²'), 0xB3 ('³') and 0xB9 ('¹').
HTH
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does python have a method for checking it with a specific locale (i.e. only 0-9 digits).
The simplest way:
>>> '1' in '1234567890'
True
>>> 'a' in '1234567890'
False
Your can also check ord, it might be faster (isn't):
>>> ord('0') <= ord('a') <= ord('9')
False
>>> ord('0') <= ord('5') <= ord('9')
True
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