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Generate Random Names Suitable as Unguessable Identifiers
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$Id$

  >>> from cybertools.util.randomname import generateName

  >>> generateName(seed=42)
  '5MdsLTYmogAeWfbrLDBY8l'

  >>> generateName(seed=42)
  '5MdsLTYmogAeWfbrLDBY8l'

  >>> def checkIt(id):
  ...     return id != '5MdsLTYmogAeWfbrLDBY8l'

  >>> generateName(check=checkIt, seed=42)
  '15pahuNd5rxoekvZSMGAl1'

  >>> generateName(lowerCaseOnly=True, seed=42)
  'b8lhps8li07acdu7i0w01b0rh'

  >>> generateName()
  '...'

  >>> generateName(base=64, seed=42)
  '2ZRA3X1CsqQhO0cn-zInCt'

  >>> generateName(base=99, seed=42)
  Traceback (most recent call last):
  ...
  ValueError: The base argument may not exceed 64, but is 99.