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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def new_(self, df=pd.DataFrame(), db=None, quiet=False, nbload_libs=True):
 """ Returns a new DataSwim instance from a dataframe """

        ds2 = Ds(df, db, nbload_libs)
        if quiet is False:
            self.ok("A new instance was created")
        return ds2