python - ImportError：无法从部分初始化的模块“faker”导入名称“faker”（很可能是由于循环导入）

问题描述

从 django.db 导入模型
```
  # Create your models here. 
```

类测验（模型。模型）：

    quiz_title = models.CharField(max_length=300)
    num_questions = models.IntegerField(default=0)

    def __str__(self):
        return self.quiz_title


class Question(models.Model):
    quiz = models.ForeignKey(Quiz, on_delete=models.CASCADE)
    question_text = models.TextField(max_length=10000)
    question_num = models.IntegerField(default=0)
    answer = models.CharField(max_length=300)
    explanation = models.TextField(max_length=5000)

    def __str__(self):
        return str(self.question_num)





class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=300)
    correct = models.BooleanField(default=False)

    def __str__(self):
        return str(self.choice_text)

from random import randint 2. from faker import faker 3. from quiz.models import Quiz, Question, Choice

随机导入
导入 django
导入操作系统
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'schoolauthquiz.settings') django.setup()
fakegen = faker()
name = ['HTML', 'CSS', 'JavaScript', 'MySQL','Python', 'jQuery', 'Bootstrap4','Math']
fake_num_questions = fakegen.randint(1, 10)
def add_quiz():
q = Quiz.objects.get_or_create(
quiz_title=random.choice(name), num_questions=fake_num_questions)[0]
q.save()
返回q

def populatequestion(N=10): 输入范围(N): quiz = add_quiz()

    fake_question_text = fakegen.question_text()
    # fake_question_num = fakegen.question_num()
    fake_answer = fakegen.answer()
    fake_explanation = fakegen.explanation()

    # fake_question = fakegen.question()
    fake_choice_text = fakegen.choice_text()
    fake_correct = fakegen.correct()

    Q = Question.objects.get_or_create(quiz=quiz, question_text=fake_question_text,
                                       question_num=fake_num_questions, answer=fake_answer,

解释=假解释）[0]

    ch = Choice.objects.get_or_create(
        question=Q, correct=fake_correct, choice_text=fake_choice_text)[0]

if name == ' main ': print("填充脚本！") populatequestion(10) print("填充填充问题完成！")

标签： pythondjango

我之前遇到过同样的问题。您需要做的是添加blank=True和null=True``inside of each ForeignKey()` 方法。

例如：

class Question(models.Model):

    """
    The Quiz models is defined as string.
    Since it is declared below this model.
    """
    quiz = models.ForeignKey('Quiz', on_delete=models.CASCADE, null=True, blank=True)
    ...


class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE,  null=True, blank=True)
  ...

请记住，第一个帖子将有一个空连接，但它可以在之后更新。

python - ImportError：无法从部分初始化的模块“faker”导入名称“faker”（很可能是由于循环导入）

问题描述

解决方案

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