6 examples of 'how to reindex dataframe in python' in Python

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331def _reindex_extra_source(self, df, source_date_index):
332 return df.reindex(index=source_date_index, method='ffill')
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244@classmethod
245def reindex(cls, dataset, kdims=None, vdims=None):
246 # DataFrame based tables don't need to be reindexed
247 return dataset.data
653def set_index_post_series(df, index_name, drop, column_dtype):
654 df2 = df.drop("_partitions", axis=1).set_index("_index", drop=True)
655 df2.index.name = index_name
656 df2.columns = df2.columns.astype(column_dtype)
657 return df2
367def test_reindex(self):
368 foo = self.dv
369 bar = self.dv[:2, :2]
370 self.assertDataArrayIdentical(foo.reindex_like(bar), bar)
371
372 expected = foo.copy()
373 expected[:] = np.nan
374 expected[:2, :2] = bar
375 self.assertDataArrayIdentical(bar.reindex_like(foo), expected)
431def force_index(df, n):
432 """Calculate Force Index for given data.
433 :param df: pandas.DataFrame
434 :param n:
435 :return: pandas.DataFrame
436 """
437 F = pd.Series(df['close'].diff(n) * df['Volume'].diff(n), name='Force_' + str(n))
438 df = df.join(F)
439 return df
114def shuffleDataFrame(df):
115 """ Shuffles the rows of a dataframe """
116 df.reset_index(inplace=True)
117 del df['index']
118 return df.reindex(np.random.permutation(df.index))

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