为什么python相对引用报错 “attempted relative import with no known parent package”

Question

from .. import string
from . import spam

在eggs.py文件中同级或者跨级引用都报错“attempted relative import with no known parent package”

Answer 1

很简单，即不要跨级，也不要同级，直接全部导入调用函数所在的模块，import