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reindex
DataFrame.reindex(self, labels=None, index=None, columns=None, axis=None, method=None, copy=True, level=None, fill_value=nan, limit=None, tolerance=None)
Conform DataFrame to new index with optional filling logic.
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Parameters
Parameters type meaning labels array-like New labels/index to conform the axis specified by “axis” to index, columns array-like axis int
orstr
Axis to target, (‘index’, ‘columns’) (0,1) method {None, ‘backfill’/‘bfill’, ‘pad’/‘ffill’, ‘nearest’} copy bool level int or name fill_value scalar, default np.NaN limit int, default None tolerance optional -
References
理解pandas.DataFrame.reindex
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