def install()

in awscli/customizations/codedeploy/systems.py [0:0]
50 lines of code
5 McCabe index (conditional complexity)

    def install(self, params):
        if 'installer' in params:
            self.INSTALLER = params.installer

        process = subprocess.Popen(
            [
                'powershell.exe',
                '-Command', 'Stop-Service',
                '-Name', 'codedeployagent'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        not_found = (
            "Cannot find any service with service name 'codedeployagent'"
        )
        if process.returncode != 0 and not_found not in error:
            raise RuntimeError(
                'Failed to stop the AWS CodeDeploy Agent:\n{0}'.format(error)
            )

        response = self.s3.get_object(Bucket=params.bucket, Key=params.key)
        with open(self.INSTALLER, 'wb') as f:
            f.write(response['Body'].read())

        subprocess.check_call(
            [
                r'.\{0}'.format(self.INSTALLER),
                '/quiet',
                '/l', r'.\codedeploy-agent-install-log.txt'
            ],
            shell=True
        )
        subprocess.check_call([
            'powershell.exe',
            '-Command', 'Restart-Service',
            '-Name', 'codedeployagent'
        ])

        process = subprocess.Popen(
            [
                'powershell.exe',
                '-Command', 'Get-Service',
                '-Name', 'codedeployagent'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        if "Running" not in output:
            raise RuntimeError(
                'The AWS CodeDeploy Agent did not start after installation.'
            )