---
title: "Check Bucket Availability"
url: https://docs.catalyst.zoho.com/en/sdk/python/v1/cloud-scale/stratus/check-bucket/
description: "This page lists the Python SDK method to check if the bucket exists in your project."
last_updated: 2026-09-08T11:07:33Z
service: Cloud Scale
type: general
related_links:
  - name: "Stratus Component Help Documentation"
    url: /en/cloud-scale/help/stratus/introduction
  - name: "Java SDK"
    url: /en/sdk/java/v1/cloud-scale/stratus/check-bucket/
  - name: "JavaScript SDK Documentation"
    url: /en/sdk/javascript/v1/cloudscale/stratus/check-bucket-availability/
  - name: "iOS SDK"
    url: /en/sdk/ios/v2/cloud-scale/stratus/overview/
  - name: "Android SDK"
    url: /en/sdk/android/v2/cloud-scale/stratus/overview/
  - name: "Flutter SDK"
    url: /en/sdk/flutter/v2/cloud-scale/stratus/overview/
  - name: "REST API"
    url: /en/api/code-reference/cloud-scale/stratus/get-all-buckets/#GetAllBuckets
---

# Check Bucket Availability

Using the `head_bucket()` SDK method, you can check the existence of a bucket in Stratus, and further check if the user has the relevant permissions to access the objects present in the bucket. The `stratus` reference used in the below code snippet is the [component instance](https://docs.catalyst.zoho.com/en/sdk/python/v1/cloud-scale/stratus/create-stratus-instance/).

Possible responses when using this SDK:

* If the bucket exists and if the user has the relevant permissions to access the bucket, the response '**true**' will be returned.

* If the bucket does not exist, or if the user does not have permission to access the bucket, the response '**false**' will be returned.

**Parameters Used**

<table class="content-table">
	<thead>
		<tr>
			<th class="w20p">Parameter Name</th>
			<th class="w20p">Data Type</th>
      <th class="w60p">Definition</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>`bucket_name`</td>
			<td>**String**</td>
			<td>A **Mandatory** parameter. Will hold the [unique name of the bucket](https://docs.catalyst.zoho.com/en/cloud-scale/help/stratus/buckets/name-bucket/#ideal-practices-to-name-a-bucket).</td>
		</tr>
		<tr>
			<td>`throw_err`</td>
			<td>**Boolean**</td>
			<td>An **Optional** parameter. If you set this parameter as "**true**", then it will throw an error when the bucket is not found in the project. The default value is "**false**"</td>
		</tr>
	</tbody>
</table>

```python
bucket_res = stratus.head_bucket('bucket_name', throw_err=False)
print(bucket_res)

```

#### Possible Errors

> **Note:** If you use the SDK with the `throw_err` parameter, and the bucket does not exist, or if you do not have sufficient permissions then you may encounter any of the errors listed below.

<table class="content-table">
	<thead>
		<tr>
			<th class="w30p">Error Code</th>
			<th class="w70p">Meaning</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>`404`</td>
			<td>Not Found. Bucket Not found in Stratus.</td>
		</tr>
		<tr>
			<td>`401`</td>
			<td>Unauthorized/Access Denied - User doesn't have permission to perform the particular operation.</td>
		</tr>
		<tr>
			<td>`403`</td>
			<td>Permission Denied - User does not have permission to access the particular bucket.</td>
		</tr>
	</tbody>
</table>