 out_dict = {}
    for k, v in self.vfuncs.items():
        out_dict[k] = v.fit
    self.fitted_vfuncs = self._apply_func(*args, out_dict=out_dict)
    prev = self.fitted_vfuncs[PREV_KEY][1:]
    if hasattr(self, FILTER_PREV_KEY):
        prev = getattr(self, FILTER_PREV_KEY) + prev
    setattr(self, PREV_KEY, prev)
    self._fitted = True
    return self</code></pre>
</details>
</dd>
<dt id="vflow.vset.Vset.fit_transform"><code class="name flex">
<span>def <span class="ident">fit_transform</span></span>(<s