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dd�Zd dd�Zdd � ZdS ) �SequenceGeneratora� Generic Sequence Generator object, this takes a single
string as the "sequence" and uses that to figure out
what the next value in a string is. For example
if you give "ABC" and pass in "A" it will give you "B",
and if you give it "C" it will give you "AA".
If you set "rollover" to True in the above example, passing
in "C" would give you "A" again.
The Sequence string can be a string or any iterable
that has the "index" function and is indexable.
Fc C s: || _ t|d �| _|| _|d | _d| jj|f | _dS )a� Create a new SequenceGenerator using the sequence_string
as how to generate the next item.
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Based largly off of the "Counter" example from mitch garnaat:
http://bitbucket.org/mitch/stupidbototricks/src/tip/counter.pyNc C s� d| _ d| _d| _|| _|| _|du r||�}| jdu r'ddl}t|�� �| _t|d��| _ d| _
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�rAddlm} ||�}|| _| jsL|| _dS dS )an Create a new Sequence, using an optional function to
increment to the next number, by default we just increment by one.
Every parameter here is optional, if you don't specify any options
then you'll get a new SequenceGenerator with a random ID stored in the
default domain that increments by one and uses the default botoweb
environment
:param id: Optional ID (name) for this counter
:type id: str
:param domain_name: Optional domain name to use, by default we get this out of the
environment configuration
:type domain_name:str
:param fnc: Optional function to use for the incrementation, by default we just increment by one
There are several functions defined in this module.
Your function must accept "None" to get the initial value
:type fnc: function, str
:param init_val: Initial value, by default this is the first element in your sequence,
but you can pass in any value, even a string if you pass in a function that uses
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