Datetime.time错误django

Question

我正在尝试将数据从 excel 文件导入到我在 Django 中的数据库中。不幸的是，我在尝试导入时间时遇到了这个错误。

    AttributeError at /datavisual/upload/
'datetime.time' object has no attribute 'total_seconds'

模型.py

CallRecord(models.Model):
    timeOfCall = models.DurationField()

在我的 Excel 逻辑 py 文件中：

class ExcelParser():

 def read_excel(Document):
    wb2 = load_workbook('Sheet1.xlsx',guess_types=True)
    for row in wb2.active.iter_rows(range_string=wb2.active.calculate_dimension()):
        newRecord = CallRecord.objects.create(timeOfCall = row[1].value)
        newRecord.save()

到目前为止，其余字段都按预期保存，但我不确定是什么导致了这个问题。

完整的错误报告：

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/datavisual/upload/

Django Version: 2.0.1
Python Version: 3.6.4
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'datavisual.apps.DatavisualConfig']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']

Traceback:

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\exception.py" in inner
  35.             response = get_response(request)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args,  **callback_kwargs)

File "C:\Michael\callcentre\callcentre\datavisual\views.py" in model_form_upload
  29.             ExcelParser.read_excel(request.FILES['file'])

File "C:\Michael\callcentre\callcentre\datavisual\ExcelParser.py" in read_excel
  21.               invoiceNumber = row[19].value)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\manager.py" in manager_method
  82.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\query.py" in create
  417.         obj.save(force_insert=True, using=self.db)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in save
  729.                        force_update=force_update, update_fields=update_fields)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in save_base
  759.             updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in _save_table
  842.             result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in _do_insert
  880.                                using=using, raw=raw)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\manager.py" in manager_method
  82.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\query.py" in _insert
  1125.         return query.get_compiler(using=using).execute_sql(return_id)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql
  1280.             for sql, params in self.as_sql():

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in as_sql
  1233.                 for obj in self.query.objs

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in <listcomp>
  1233.                 for obj in self.query.objs

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in <listcomp>
  1232.                 [self.prepare_value(field, self.pre_save_val(field, obj)) for field in fields]

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in prepare_value
  1172.             value = field.get_db_prep_save(value, connection=self.connection)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in get_db_prep_save
  767.         return self.get_db_prep_value(value, connection=connection, prepared=False)

File "C:\Users\d_aqu\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in get_db_prep_value
  1634.         return int(round(value.total_seconds() * 1000000))

Exception Type: AttributeError at /datavisual/upload/
Exception Value: 'datetime.time' object has no attribute 'total_seconds'

Answer 1

报告的错误很清楚：

AttributeError at /datavisual/upload/
'datetime.time' object has no attribute 'total_seconds'

由于您提供的回溯与您提供的代码不对应，因此很难准确地告诉您发生了什么。 无论如何，在某些时候，您可能尝试使用 datetime.time 值初始化您的 DurationField，而它应该用 datetime.timedelta 填充。

您可以调试您的代码并确保您的 Excel 文档解析器返回 datetime.timedelta 对象而不是 datetime.time。

看看这一行

newRecord = CallRecord.objects.create(timeOfCall = row[1].value)

并检查row[1].value返回的值，或者如果我相信回溯，请查看文件ExcelParser.py的第21行：

invoiceNumber = row[19].value)

将datetime.time 值转换为timedelta 并不是什么大问题。您只需要知道 time 值究竟代表什么，并计算相应的持续时间（例如：从同一天的午夜开始，从同一年的 1 月 1 日开始，等等）。请参阅this post 了解更多信息。