ValueError: not enough values to unpack (expected 2, got 0)
时间: 2023-09-05 08:08:36 浏览: 52
This error is raised when you are trying to unpack a sequence (such as a list, tuple, or dictionary) into a set of variables, but the sequence does not have enough values to match the number of variables in the unpacking statement.
For example, if you have the following code:
```python
x, y = (1,)
```
This code tries to unpack a tuple with one element into two variables, but there is only one value in the tuple. This will raise a `ValueError` with the message "not enough values to unpack (expected 2, got 1)".
In your case, you are trying to unpack a sequence with two elements into two variables, but the sequence is empty (it has zero elements). This raises the `ValueError` with the message "not enough values to unpack (expected 2, got 0)".
To fix this error, you need to make sure that the sequence you are trying to unpack has the correct number of elements to match the number of variables in the unpacking statement. You can also use a try-except block to handle cases where the sequence may not have the expected number of elements.