使用 django 导入导出库导入 csv 文件时如何为用户隐藏回溯

Question

我已经在我的应用中成功实现了导入和导出。我唯一不能做的就是在导入失败时隐藏用户的回溯。

到目前为止我已经尝试过：

raise_errors = False in admin.py
.traceback{display:none} in import.css
DEBUG = False in settings.py

我故意在 csv 文件中以列名开头的错误数据，我总是每行得到这个：

§  Line number: 1 - "Column 'my_error' not found in dataset. Available columns are: ['column1', 'column2', 'my_err', 'column3']"

row1data1, row1data2, row1data3, 0

Traceback (most recent call last):
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\fields.py", line 63, in clean
value = data[self.column_name]
KeyError: 'my_error'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\resources.py", line 492, in import_row
instance, new = self.get_or_init_instance(instance_loader, row)
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\resources.py", line 269, in get_or_init_instance
instance = self.get_instance(instance_loader, row)
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\resources.py", line 263, in get_instance
return instance_loader.get_instance(row)
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\instance_loaders.py", line 32, in get_instance
params[field.attribute] = field.clean(row)
File "C:\Users\my_user\.virtualenvs\my_project-gu-pxuzP\lib\site-packages\import_export\fields.py", line 66, in clean
"columns are: %s" % (self.column_name, list(data)))
KeyError: "Column 'my_erro' not found in dataset. Available columns are: ['column1', 'column2', 'my_error', 'column4']"

我怎样才能只得到消息的第一行？：

§  Line number: 1 - "Column 'my_error' not found in dataset. Available columns are: ['column1', 'column2', 'my_err', 'column3']"

row1data1, row1data2, row1data3, 0

谢谢！

Answer 1

您只需要捕获错误并仅打印错误，然后退出，如果您 想。 （假设 Python3）

try:
    value = data[self.column_name]
except KeyError as e:
    print("An error occurred: {}".format(e))
    # or perhaps some other action.

任何未被捕获和处理的异常都会产生堆栈跟踪，因为它假定它是无意的。您需要考虑代码的不同部分可能会生成哪些异常，并决定是否要以不同的方式将它们呈现给用户。