Python 无法检查django中的多行字符串
实际上,我想检查用户的答案是Python 无法检查django中的多行字符串,python,django,string,django-3.1,Python,Django,String,Django 3.1,实际上,我想检查用户的答案是正确还是不正确。 当我尝试使用纯python代码输入虚拟数据时,它工作正常 但是,当我尝试将其添加到django中时,它对多行无效,仅对一行有效
正确
还是不正确
。
当我尝试使用纯python代码输入虚拟数据时,它工作正常
但是,当我尝试将其添加到django中时,它对多行无效,仅对一行有效<我也尝试了3种方法,但仍然不起作用。在我看来,可能是因为\n
问题我检查了
类型
s(正确答案
和用户答案
),它给了我
class UserAnswerView(APIView):
allowed_methods = ('post',)
permission_classes = (permissions.AllowAny,) # just for test
serializer_class = UserAnswerSerializer
def validate_answer(self, exercise_id, user_answer):
exercise = Exercise.objects.get_or_none(id=exercise_id)
if exercise and user_answer:
if isinstance(user_answer, str):
correct_answers = exercise.answer_set.published()
# [method 1]
# return correct_answers.filter(Q(answer__icontains=user_answer)).exists()
# [method 2]
# for correct_answer in correct_answers:
# if correct_answer.answer == user_answer:
# return True
# [method 3]
return any(c.answer == user_answer for c in correct_answers)
return False
这是models.py
class Exercise(TimeStampedModel):
id = models.BigAutoField(primary_key=True)
title = models.CharField(_('Title'), max_length=200)
order = models.PositiveIntegerField(_('Order'), default=1)
course = models.ForeignKey(Course, on_delete=models.CASCADE)
sort_description = models.TextField(_('Sort Description'))
description = models.TextField(_('Description'))
initial_script = models.TextField(_('Initial Script'), blank=True)
objects = CustomManager()
def __str__(self):
return self.title
class Answer(TimeStampedModel):
id = models.BigAutoField(primary_key=True)
exercise = models.ForeignKey(Exercise, on_delete=models.CASCADE)
answer = models.TextField(_('Answer'), help_text=_('The correct answer'))
objects = CustomManager()
def __str__(self):
return self.answer[:50]
在我的测试中,我将此代码放入user\u-answer
表单中,并将correct\u-answer
from datetime import datetime
now = datetime.now()
print(now)
无论如何,我也在数据库中输入了一些有效答案
使用$.ajax
post方法处理的请求也是DRF,所有请求数据都发送到后端
现在,问题出在数据库中,因为它是由
\r
以某种方式添加的。所以,我需要更换它。在我的测试中,我试图将它们打印到列表模式:
number = 0
for canswer in correct_answers:
number += 1
print([number, canswer.answer])
print([number, user_answer])
print('')
发现的大问题不一样
[1, 'from datetime import datetime\r\nnow = datetime.now()\r\nprint(now)']
[1, 'from datetime import datetime\n\nnow = datetime.now()\nprint(now)']
[2, 'from datetime import datetime\r\n\r\nnow = datetime.now()\r\nprint(now)']
[2, 'from datetime import datetime\n\nnow = datetime.now()\nprint(now)']
所以,我只需要更换它
for canswer in correct_answers:
correct_answer = canswer.answer.replace('\r', '')
user_answer = user_answer.replace('\r', '')
if correct_answer == user_answer:
return True