viscid.verror module¶
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class
viscid.verror.
UnimportedModule
(exception, msg='', **attrs)[source]¶ Bases:
object
Proxy object for unimported modules
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exception
viscid.verror.
DeferredImportError
[source]¶ Bases:
exceptions.ImportError
So lack of an optional dependency doesn’t make viscid unimportable
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exception
viscid.verror.
BackendNotFound
[source]¶ Bases:
exceptions.RuntimeError
Calculator backend not installed