Question

我试图像这样声明一个包含Datetime的变量

ts1.departure_date = '2012-03-03 10:10:10'

然后我收到了这个错误

StatementError: (exceptions.TypeError) SQLite DateTime type only accepts Python datetime and date objects as input.

我想知道用datetime格式声明变量的正确方法是什么？提前致谢

Answer 1

首先导入datetime类：

from datetime import datetime

然后创建一个datetime对象并使用它来设置属性：

ts1.departure_date = datetime(2012, 3, 3, 10, 10, 10)

Answer 2

    expiration_year  = int(form.expiration_date.data[:4])
    expiration_month =  int(form.expiration_date.data[5:7])
    expiration_date = int(form.expiration_date.data[8:10])
    expiration_date =datetime(expiration_year,expiration_month,expiration_date)

Answer 3

使用SQLite和Postgres的SQLAlchemy遇到的超奇怪错误

from datetime import datetime

....
#WORKS
 lending_operation = models.LendingOperation(

                device_id = device.device_id,
                start_using = datetime.now()
            )
        db.session.add(lending_operation)
        db.session.commit()

#DIDN'T WORK

lending_operation = models.LendingOperation(
                currency = "USD",
                device_id = device.device_id,
                start_using = datetime.now()
            )
        db.session.add(lending_operation)
        db.session.commit()

#MODEL: models.py
class LendingOperation(db.Model):
    .....
    start_using = db.Column(db.DateTime, default=datetime.now )
    .....
    currency = db.Column(db.DateTime)

Hope it helps, didn't find any info on the exception

错误 - “SQLite DateTime类型仅接受Python”“日期时间和日期对象作为输入”。

3 个答案: