Python-to_-sql违反了外键约束

如何在向Djando模型插入

数据帧时捕获
回溯

我有两个Django模型，一个模型有数据，在本例中是
Customer
model

样本模型

class Customer(models.Model):
    customer_id = models.IntegerField(primary_key=True)
    name = models.CharField()
    ...
class Account(models.Model):
    account = models.ForeignKey(Customer, on_delete=models.CASCADE)
    description = models.CharField()
    ...

帐户数据帧

try:
    df.to_sql('account', con=engine, if_exists='append')
except sqlalchemy.exc.IntegrityError as e:
    print(e)

psycopg2.errors.ForeignKeyViolation: insert or update on table 
"account" violates foreign key constraint

我想识别数据帧中没有外键的行，并插入其他行
我认为它可以帮助您我认为它可以帮助您