def insertDomain(self, domain, indegree=0, outdegree=0):
		'''增加一个域名'''
		cur = self.conn.cursor()
		cur.execute("INSERT INTO Domains VALUES (NULL,?,?,?)", (domain, indegree, outdegree))
		# 写入到文件中
		self.conn.commit()
def find_first_remote_branch(remotes: Sequence['Remote'], branch_name: str) -> 'RemoteReference':
    """Find the remote branch matching the name of the given branch or raise InvalidGitRepositoryError"""
    for remote in remotes:
        try:
            return remote.refs[branch_name]
        except IndexError:
            continue
        # END exception handling
    # END for remote
    raise InvalidGitRepositoryError("Didn't find remote branch '%r' in any of the given remotes" % branch_name)