3 examples of 'pandas diff' in Python
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3081 def _diff(self, periods, part_cols=()): 3082 if not isinstance(periods, int): 3083 raise ValueError('periods should be an int; however, got [%s]' % type(periods)) 3084 window = Window.partitionBy(*part_cols).orderBy(self._internal.index_scols)\ 3085 .rowsBetween(-periods, -periods) 3086 scol = self._scol - F.lag(self._scol, periods).over(window) 3087 return self._with_new_scol(scol).rename(self.name)
1958 def _diff(self, *args, **kwargs): 1959 groupkey_scols = [s._scol for s in self._groupkeys] 1960 return Series._diff(self._kser, *args, **kwargs, part_cols=groupkey_scols)
35 def _get_diff_data(df, name): 36 column_names = _get_diff_column_names(name) 37 d = df[column_names].sum() 38 n = d.sum() 39 counts = np.array([d[2], d[1] + d[3], d[0] + d[4]]) 40 percentages = 100. * counts / float(n) 41 return [name[:-1], n] + list(percentages)