Simple function to select (or reorder) columns of a pandas DataFrame

pandas_select.py

def select(dataframe, columns, keep_others=True):
    ''' Re-order or select columns. If keep_others, then it is simply re-ordered else it will select columns'''
    cols = set(dataframe.columns)
    if keep_others:
        others = list(cols.difference(columns))
        reordered = columns + others
        return dataframe[reordered]
    else:
        return dataframe[columns]