ValueError: too many values to unpack (expected 2)

qrkoydzdhlje1年前 ⋅ 1329 阅读
This error message indicates that there are more values being unpacked from an iterable than the number of variables that they are being assigned to. 

For example, consider the following code snippet:

```
x, y = [1, 2, 3]
```

Here, we are trying to assign three values (1, 2, and 3) to the two variables (x and y). This will result in the "ValueError: too many values to unpack (expected 2)" error message since we have more values than variables.

To fix this error, we need to either change the number of variables we are assigning to, or the number of values in the iterable.

For example:

```
x, y, z = [1, 2, 3]  # too many values to unpack

# Solution 1: Assign the values to fewer variables
x, y = [1, 2]

# Solution 2: Add more variables to match the number of values
x, y, z = [1, 2, 3, 4] 
```

It is important to ensure that the number of variables and the number of values in the iterable match, or else this error will occur.

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