Working with Fields with Variable Type

[planetmilesm]

Hello, I'm a graphQL newbie and I'm trying to see if I can use this library to replace the following query which relies on inline fragments to deal with a field which can vary in type (I am working with the Gitlab GraphQL API):

query {
    project(fullPath: "{project_path}") {
        vulnerabilities(severity: {severity}, reportType:{report_type}, state:{state}, first:100) {
        nodes{
            id
            title
            state
            severity
            description
            detectedAt
            reportType
            identifiers {
                externalType
                externalId
                name
                url
            }
            vulnerabilityPath
            location {
                ... on
                VulnerabilityLocationSast {
                    file
                    startLine
                    endLine
                },
                ... on
                VulnerabilityLocationContainerScanning {
                    image
                    operatingSystem
                    dependency {
                        package {
                            name
                        }
                        version
                    }
                }
                ... on
                VulnerabilityLocationSecretDetection {
                    file
                }
                ... on
                VulnerabilityLocationDependencyScanning {
                    file
                    dependency {
                        package {
                            name
                        }
                        version
                    }
                }
            }
        }
        pageInfo {
          hasNextPage
          endCursor
        }
        }
    }
    }

I have gotten up to here in writing the query using py2graphql:

project_vuln_query = client.query().project(
        fullPath=ProjectPath).vulnerabilities(
        severity=Severity, state=State).nodes.values(
        'id',
        'title',
        'state',
        'severity',
        'description',
        'detectedAt',
        'reportType',
        Query().identifiers.values(
            'externalType',
            'externalId',
            'name',
            'url'),
        'vulnerabilityPath',
        Query().location...?
        )

I can't find an example of how to do fragments in the documentation but the library looks powerful, I bet it can be done and I just can't figure it out. Any help is much appreciated!