Current File : //opt/alt/python27/lib/python2.7/site-packages/paste/exceptions/serial_number_generator.pyo
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Creates a human-readable identifier, using numbers and digits,
avoiding ambiguous numbers and letters. hash_identifier can be used
to create compact representations that are unique for a certain string
(or concatenation of strings)
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Encodes a number as an identifier.
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Hashes the string (with the given hashing module), then turns that
hash into an identifier of the given length (using modulo to
reduce the length of the identifier). If ``pad`` is False, then
the minimum-length identifier will be used; otherwise the
identifier will be padded with 0's as necessary.
``prefix`` will be added last, and does not count towards the
target length. ``group`` will group the characters with ``-`` in
the given lengths, and also does not count towards the target
length. E.g., ``group=4`` will cause a identifier like
``a5f3-hgk3-asdf``. Grouping occurs before the prefix.
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>>> make_identifier(0)
''
>>> make_identifier(1000)
'c53'
>>> make_identifier(-100)
Traceback (most recent call last):
...
ValueError: You cannot make identifiers out of negative numbers: -100
>>> make_identifier('test')
Traceback (most recent call last):
...
ValueError: You can only make identifiers out of integers (not 'test')
>>> make_identifier(1000000000000)
'c53x9rqh3'
R s'
>>> hash_identifier(0, 5)
'cy2dr'
>>> hash_identifier(0, 10)
'cy2dr6rg46'
>>> hash_identifier('this is a test of a long string', 5)
'awatu'
>>> hash_identifier(0, 26)
'cy2dr6rg46cx8t4w2f3nfexzk4'
>>> hash_identifier(0, 30)
Traceback (most recent call last):
...
ValueError: md5 cannot create hashes longer than 26 characters in length (you gave 30)
>>> hash_identifier(0, 10, group=4)
'cy-2dr6-rg46'
>>> hash_identifier(0, 10, group=4, upper=True, prefix='M-')
'M-CY-2DR6-RG46'
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