Get the equivalent package name in pipfile

def get_package_name_in_pipfile(self, package_name, dev=False):
        """Get the equivalent package name in pipfile"""
        key = "dev-packages" if dev else "packages"
        section = self.parsed_pipfile.get(key, {})
        package_name = pep423_name(package_name)
        for name in section.keys():
            if pep423_name(name) == package_name:
                return name
        return None