The DeclarativeMeta class is accessible via the formencode.declarative module.
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(<type 'type'>,)
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'DeclarativeMeta'
(<class 'formencode.declarative.DeclarativeMeta'>, <type 'type'>, <type 'object'>)
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__subclasses__() -> list of immediate subclasses
x.__cmp__(y) <==> cmp(x,y)
x.__call__(...) <==> x(...)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
See the source for more information.