Python - Zeep SOAP Complex Header

I recently encountered this problem, and here is how I solved it.

Say you have a 'Security' header that looks as follows...

<env:Header>
<Security>
    <UsernameToken>
        <Username>__USERNAME__</Username>
        <Password>__PWD__</Password>
    </UsernameToken>
    <ServiceAccessToken>        
        <AccessLicenseNumber>__KEY__</AccessLicenseNumber>
    </ServiceAccessToken>
</Security>
</env:Header>

In order to send this header in the zeep client's request, you would need to do the following:

header = zeep.xsd.Element(
            'Security',
            zeep.xsd.ComplexType([
                zeep.xsd.Element(
                    'UsernameToken',
                    zeep.xsd.ComplexType([
                        zeep.xsd.Element('Username',zeep.xsd.String()),
                        zeep.xsd.Element('Password',zeep.xsd.String()),
                    ])
                ),
                zeep.xsd.Element(
                    'ServiceAccessToken',
                    zeep.xsd.ComplexType([
                        zeep.xsd.Element('AccessLicenseNumber',zeep.xsd.String()),
                    ])
                ),
            ])
        )

header_value = header(UsernameToken={'Username':'test_user','Password':'testing'},UPSServiceAccessToken={'AccessLicenseNumber':'test_pwd'})

client.service.method_name_goes_here(
                    _soapheaders=[header_value],#other method data goes here
                )

Thx Oblivion02.

I finally use a raw method

headers = {'content-type': 'text/xml'}
body = """<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://blablabla">
<soapenv:Header>
<something:myVar1>FOO</something:myVar1>
<something:myVar2>JAM</something:myVar2>
</soapenv:Header>
<soapenv:Body>
          ...
</soapenv:Body>
</soapenv:Envelope>"""

response = requests.post(wsdl,data=body,headers=headers)