Before You Start (SDK for Python)

This section describes the version updates, compatibility, and important notes about Object Storage Service (OBS) SDK for Python.

Version Updates and Compatibility

Table 1 describes the version updates and compatibility with earlier versions of OBS SDK for Python. For details about the version revision records, see ChangeLog.

**Table 1** Version updates and compatibility of OBS SDK for Python
Version	Update	Description	Compatible or Not
V3.26.6 (latest and recommended)	New features Document optimization	New features: Supported the configuration of bucket inventories. Supported the configuration of online decompression policies. Supported the modification of objects in parallel file systems. Supported the configuration of object tags. Supported the configuration of the default WORM policy for buckets. Supported the configuration of the DIS policy for buckets. Supported the configuration of direct reading for buckets. Document optimization: Added the sample code for asynchronous resumable upload and pausing and canceling the resumable upload. Optimized the description about encrypting buckets by specifying an encryption method. Optimized the description about certificate hosting in the custom domain name of a bucket. Added the description about using MD5 to verify file consistency. Added the sample code for restoring objects in a specified path. Added the sample code for collecting statistics on the folder size. Added the sample code for copying parts. Added the sample code for enabling WORM when creating a bucket. Added the sample code for specifying multiple ranges when downloading an object. Added the sample code for downloading an object of a specified version using a temporary URL. Added the sample code for resumable upload callback.	Yes
v3.26.2	Resolved issues	Fixed the issue that an error is reported when CRC64 verification is enabled for the putContent API to upload empty objects. Updated some MIME mappings and added the MIME mapping for WASM files.	Yes
v3.25.8	New features Resolved issues Compatibility changes	New features: When an ECS agency is used to initialize ObsClient, the more secure IMDSv2 API is preferentially used to interact with ECS. Resolved issues: Fixed the issue that the retry cannot be performed if verification fails after CRC64 verification and resumable upload are enabled for the ObsClient.downloadFile API. Compatibility changes: Python 2 is no longer supported. Use Python 3.6 or later.	Yes
v3.25.3	New features	Allowed you to use APIs related to custom domain names.	Yes
v3.24.12	New features	Allowed you to use APIs related to BPA.	Yes
v3.24.6.1	New features	Supported CRC64 verification.	Yes
v3.24.3	Resolved issues	Optimized some code.	Yes
v3.23.12	Resolved issues	Resolved the issue of inconsistent contentType when uploading a folder using putFile.	Yes
v3.23.9.1	New features Resolved issues	Supported the fragment expiration configurations in the action mentioned in Configuring Lifecycle Rules for a Bucket (SDK for Python). Resolved the issue where a read of closed file error is reported during an upload retry.	Yes
Versions earlier than v3.23.9.1 (EOM)	-	End of matching. You are advised to upgrade the version.	-

Important Notes

Make sure that you are familiar with basic OBS concepts, such as buckets, objects, access keys (AKs/SKs), and endpoints and domain names.
Some features are available only in some regions. If 405 HTTP status code is returned for a call of a certain feature API, check whether the region supports this feature.
The namespace is incompatible with earlier OBS versions (2.1.x). All modules are saved in the obs package.
API functions are compatible with earlier OBS versions (2.1.x).

Next topic: API Overview of OBS SDK for Python

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