5 examples of 'python pandas concatenate multiple columns' in Python
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29 def _concat(df, type): 30 if df is None: 31 df = pd.DataFrame(_object_blocks[type]) 32 else: 33 _df = pd.DataFrame(_object_blocks[type]) 34 df = pd.concat([df, _df], sort=True) 35 return df
39 @pytest.mark.functions 40 def test_deconcatenate_column_string_no_sep(dataframe): 41 with pytest.raises(ValueError): 42 df_orig = dataframe.concatenate_columns( 43 column_names=["a", "decorated-elephant"], 44 sep="-", 45 new_column_name="index", 46 ) 47 df = df_orig.deconcatenate_column( 48 column_name="index", new_column_names=["A", "B"] 49 )
33 def concat(self, l): 34 if not len(l): 35 return "NA" 36 return ";".join([str(i) for i in l])
813 def merge(old_cols, new_cols): 814 return old_cols + new_cols
468 def _concat(self, *args, **kwargs): 469 if self._dask: 470 return da.concatenate(*args, **kwargs) 471 else: 472 return np.concatenate(*args, **kwargs)