def nunique(self, dropna=True):
        uniqs = self.unique()
        n = len(uniqs)
        if dropna and com.isnull(uniqs).any():
            n -= 1
        return n
Set the basic variables.
dataset/ETHPy150Open pydata/pandas/pandas/core/base.py/IndexOpsMixin.nunique--crossover with--dataset/ETHPy150Open datamachine/telex/telex/plugin/IPlugin.py/IPlugin.__init__