def to_python_source(classes, indent=DEFAULT_INDENT):
return header_source() + "<STR_LIT:\n>" + classes_source(classes, indent)<EOL>
Convert a set of pyschemas to executable python source code

    Currently supports all built-in types for basic usage.

    Notably not supported:
    * Maintaining class hierarchy
    * Methods, properties and non-field attributes
    * SELF-references