from string import Template

XML_TEMPLATE = Template("""
    <xml>
        <name>$name</name>
        <place>
            <city>$city</city>
            <country>$country</country>
        </place>
        <lang code="$code" />
    </xml>
    """)

params = {
    'name':'John Smith',
    'city':'Mumbai',
    'country':'India',
    'code':'Marathi'
    }

print(XML_TEMPLATE.substitute(params))