ValueError: too many values to unpack (expected 2)
时间: 2023-09-23 18:09:48 浏览: 84
This error occurs when you are trying to unpack more values than the number of variables you have specified.
For example, let's say you have a tuple with three values, but you are trying to unpack it into only two variables. In this case, Python will raise a ValueError with the message "too many values to unpack (expected 2)".
Here's an example:
```
t = (1, 2, 3)
a, b = t # This will raise a ValueError because you are trying to unpack three values into two variables.
```
To fix this error, you need to make sure that the number of variables you are unpacking into matches the number of values in the tuple. In the above example, you can fix the error by adding a third variable:
```
t = (1, 2, 3)
a, b, c = t # Now this will work without any errors.
```