build.py
def build(setup_kwargs):
    """
    This function is mandatory in order to build the extensions.
    """
    setup_kwargs.update(
        {"ext_modules": cythonize(ext_modules)}
    )
    return setup_kwargs

    This function is mandatory in order to build the extensions.
    
This function is mandatory in order to build the extensions.
This function is mandatory in order to build the extensions .
def build(setup_kwargs):
    setup_kwargs.update(
        {"ext_modules": cythonize(ext_modules)}
    )
    return setup_kwargs
def build ( setup_kwargs ) : setup_kwargs . update ( { "ext_modules" : cythonize ( ext_modules ) } ) return setup_kwargs
This function is mandatory in order to build the extensions.
This function is mandatory in order to build the extensions .
"""
    This function is mandatory in order to build the extensions.
    """
setup_kwargs