---
title: do not use hasattr to check if a value is callable
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > do not use hasattr to check if a value is callable
---

# do not use hasattr to check if a value is callable

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## Metadata{% #metadata %}

**ID:** `python-best-practices/use-callable-not-hasattr`

**Language:** Python

**Severity:** Notice

**Category:** Best Practices

## Description{% #description %}

Do not make any check using `hasattr` to check if a function is callable since the object may have redefine `__getattr__`. Instead, use `callable()`.

#### Learn More{% #learn-more %}

- [Python Documentation: callable() built-in](https://docs.python.org/3/library/functions.html#callable)

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```python
hasattr(x, '__call__')  # use callable 
```

## Compliant Code Examples{% #compliant-code-examples %}

```python
callable(x)
```
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