[Biopython-dev] [Bug 2967] AbstractCommandline silently accepts invalid parameter options

[bugzilla-daemon at portal.open-bio.org]

http://bugzilla.open-bio.org/show_bug.cgi?id=2967





------- Comment #5 from lpritc at scri.sari.ac.uk  2009-12-09 07:53 EST -------
This works for me, at the moment:

    def __setattr__(self, name, value):
        """ Workaround for a user interface issue.  Without this __setattr__
            attribute-based assignment of parameters will silently accept
invalid 
            parameters, leading to known instances of the user assuming that 
            parameters for the application are set, when they are not.
            This workaround uses a whitelist of object attributes, and 
            sets the object attribute list as normal, for these.  Other
            attributes are assumed to be parameters, and passed to the 
            self.set_parameter method for validation and assignment.
        """
        attr_whitelist = ['parameters', 'program_name']     # Allowed
attributes
        if name not in attr_whitelist:       # If not in whitelist, treat
            self.set_parameter(name, value)  # as parameter
        else:
            self.__dict__[name] = value


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