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from functools import wraps

class default_output(object):
    """returns the backup plan if the decorated method fails
       by: Cody Kochmann
    """
    def __init__(self, backup_output, logger=print):
        self.backup_output = backup_output
        self.logger = logger

    def __call__(self,func):
        assert callable(func), "default_output needs a callable target to wrap"
        def wrapper(*args, **kwargs):
            print(args,kwargs)
            try:
                return func(*args, **kwargs)
            except Exception as ex:
                # this is where logging would happen
                self.logger(ex)
                # ====================================
                return self.backup_output
        return wrapper