交叉导入django/python时导入错误

Question

大家好,任何人都可以帮我这个我输入错误当我做导入我认为它所有clashing.all是好的,直到我导入B因为我真的需要从A做一个ForeignKey到B.

A/models.py

from b.models import B #there is the problem
Class A():
    ....
    b = models.ForeignKey(B) # I really have to do this

B/models.py

from c.models import C

Class B():
    ....
    c = models.ForeignKey(C)

C/models.py

from a.models import A
Class C():
    a = models.ForeignKey(A)

Answer 1

你可以这样做(不导入模型B,只需键入格式为"app_name.model_name"的字符串)

A/models.py

Class A():
    ....
    b = models.ForeignKey("b.B")

ForeignKey docs