def info(self, show=True):
    'Print some info.'
    s = 'Data store:\n'
    s += self.hdu_table.summary()
    s += '\n\n'
    s += self.obs_table.summary()
    if show:
        print(s)
    else:
        return s
Print some info.
def info(self, show=True):
    
    s = 'Data store:\n'
    s += self.hdu_table.summary()
    s += '\n\n'
    s += self.obs_table.summary()
    if show:
        print(s)
    else:
        return s