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POWhy does Python store German and Spanish (and other?) time format strings as %T in the locale module?
 

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  1. POWhy does Python store German and Spanish (and other?) time format strings as %T in the locale module?
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    <p>I'm writing a test for a program that will be used in multiple locales. While running the test in German, i got the error</p> <pre><code>Traceback (most recent call last): File "&lt;stdin&gt;", line 1, in &lt;module&gt; File "/usr/local/lib/python2.7/_strptime.py", line 454, in _strptime_time return _strptime(data_string, format)[0] File "/usr/local/lib/python2.7/_strptime.py", line 317, in _strptime (bad_directive, format)) ValueError: 'T' is a bad directive in format '%T' </code></pre> <p>Digging into this, i discovered that using <code>locale.nl_langinfo(locale.T_FMT)</code> while in German or Spanish (and potentially other languages) produces the format string <code>'%T'</code>. This is not recognized in the <a href="http://docs.python.org/library/time.html#time.strftime" rel="nofollow noreferrer"><code>time</code> module</a>. </p> <p>The documentation on <code>locale</code> at <a href="http://docs.python.org/library/locale.html" rel="nofollow noreferrer">python.org</a> doesn't mention anything about returning <code>'%T'</code>. The only reference to <code>'%T'</code> i could find anywhere is in a response to <a href="https://stackoverflow.com/q/2507726/534346">a separate StackOverflow question</a>. From that post and context, i'm assuming <code>'%T'</code> is shorthand for <code>'%H:%M:%S'</code>.</p> <p>My question is, how do i handle the locales for which <code>locale</code> will return <code>'%T'</code> for its format string without doing something like</p> <pre><code>if fmt_str == '%T': fmt_str = '%H:%M:%S' </code></pre> <p>to handle those cases?</p>
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    1. CO+1 Very weird. A standard module errors out unconditionally, with a sucksy error message, simply because of a locale change?
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    2. COThe problem appears to be that the two modules just don't communicate with each other and `locale` started using shorthand that `time` doesn't recognize. Which is very weird, because they're both supposed to adhere to the unix `date` standard; `locale` does while `time` apparently does not.
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    3. COIt isn't that my local environment supports `%T`, it's that `locale` uses `%T` as the shorthand for `%H:%M:%S` but `time` doesn't. The abbreviations in `locale` match the formats of Unix's `date` function (to see them, type `date --h` at a command line), but `time` uses a stripped-down list of abbreviations. For the record, `%X` would work, but that's not what is being returned by `locale`.
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