# Supporting SCM providers

The SonarQube Scanner uses information from the project’s SCM provider, if available, to:

* Assign a new issue to the person who introduced it. The last committer on the related line of code is considered to be the author of the issue.
* Estimate the coverage on new code, including added and changed code since in your new code.
* Display the most recent commit on each line in the code viewer.

![Exempt a block of Python code from coverage](/files/BN6ymz6xUBViNUWywqap)

Exempt a block of Python code from coverage

The only required SCM command is "blame", which gets the last committer of each line for a given file. This command is executed by a SonarQube plugin through the extension point `org.sonar.api.batch.scm.ScmProvider`. See the embedded [SCM integration](/sonarqube-server/10.4/analyzing-source-code/scm-integration.md) documentation for more details.


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