# DECR

> Decrement the integer value of a key by one

If a key does not exist, it is initialized as 0 before performing the operation. An error is returned if the key contains a value of the wrong type or contains a string that can not be represented as integer.

## Arguments

<ParamField body="key" type="str" required>
The key to decrement.
</ParamField>


## Response

<ResponseField  type="int" required>
The value at the key after the decrementing.
</ResponseField>

<RequestExample>
```py Example
redis.set("key", 6)

assert redis.decr("key") == 5
```
</RequestExample>