---
title: do not use format string with logging functions
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > do not use format string with logging functions
---

# do not use format string with logging functions

{% callout %}
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## Metadata{% #metadata %}

**ID:** `python-best-practices/logging-no-format`

**Language:** Python

**Severity:** Notice

**Category:** Best Practices

## Description{% #description %}

Avoid using format string with the `format` method when logging information.

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

```python
import logging
import shlex

logging.info("error {0} {1}".format(plop, plip))  # use instead logging.info("error %s", plop)
```

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

```python
import logging

logging.info("wfwef")
```
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