Python csv阅读器中的行显示语法错误

刚接触Django和Python。我需要为CSV文件编写一个导入脚本来为一些数据添加种子(不使用夹具,已经这样做了,因为它是基于JSON的,而不是CSV)。

这起作用:

import csv
from datetime import datetime
from django.utils.timezone import make_aware
from django.core.management.base import BaseCommand
from chatterbox.models import Organisation, Course, Student

class Command(BaseCommand):
    def handle(self, **options):

      CSV_PATH = './students_AEKI.csv'

      Student.objects.filter(organisation__name__exact="AEKI").delete()

      with open(CSV_PATH) as file:
        file.readline() # skip the header
        csv_reader = csv.reader(file, delimiter=',')
        org = Organisation.objects.filter(name="AEKI")

        for row in csv_reader:
          _, Student.objects.get_or_create(
              first_name=row[0],
              last_name=row[1],
              email=row[2],
              organisation=org[0],
              enrolled=row[4],
              last_booking=row[5],
              credits_total=row[6],
              credits_balance=row[7],
              )

这不起作用:

import csv
from datetime import datetime
from django.utils.timezone import make_aware
from django.core.management.base import BaseCommand
from chatterbox.models import Organisation, Course, Student

class Command(BaseCommand):
    def handle(self, **options):

      CSV_PATH = './students_AEKI.csv'

      Student.objects.filter(organisation__name__exact="AEKI").delete()

      with open(CSV_PATH) as file:
        file.readline() # skip the header
        csv_reader = csv.reader(file, delimiter=',')
        org = Organisation.objects.filter(name="AEKI")

        for row in csv_reader:
          enrolled_utc = make_aware(datetime.strptime(row[4], '%Y-%m-%d'))
          last_booking_utc = make_aware(datetime.strptime((row[5], '%Y-%m-%d'))
          _, Student.objects.get_or_create(
              first_name=row[0],
              last_name=row[1],
              email=row[2],
              organisation=org[0],
              enrolled=enrolled_utc,
              last_booking=last_booking_utc,
              credits_total=row[6],
              credits_balance=row[7],
              )

“_”处存在语法错误。

在表中创建数据之前,我需要对数据进行一些操作(例如在日期字段中添加时区)。那么,第二个版本有什么问题呢?