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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def initialize(self):
 """Initialize a connection to the LDAP server. :return: LDAP connection object. """


        try:
            conn = ldap.initialize('{0}://{1}:{2}'.format(
                current_app.config['LDAP_SCHEMA'],
                current_app.config['LDAP_HOST'],
                current_app.config['LDAP_PORT']))
            conn.set_option(ldap.OPT_NETWORK_TIMEOUT,
                            current_app.config['LDAP_TIMEOUT'])
            conn = self._set_custom_options(conn)
            conn.protocol_version = ldap.VERSION3
            if current_app.config['LDAP_USE_TLS']:
                conn.start_tls_s()
            return conn
        except ldap.LDAPError as e:
            raise LDAPException(self.error(e.args))