用python读取和更新git配置？

from git import Repo

# 读取git配置
def read_git_config():
    repo = Repo('.')  # 指定git仓库的路径
    config = repo.config_reader()  # 获取配置读取器
    username = config.get_value('user', 'name')  # 读取用户名配置
    email = config.get_value('user', 'email')  # 读取邮箱配置
    return username, email

# 更新git配置
def update_git_config(username, email):
    repo = Repo('.')  # 指定git仓库的路径
    config = repo.config_writer()  # 获取配置写入器
    config.set_value('user', 'name', username)  # 更新用户名配置
    config.set_value('user', 'email', email)  # 更新邮箱配置
    config.release()  # 保存配置更改

# 示例用法
username, email = read_git_config()
print(f"当前git配置：用户名：{username}，邮箱：{email}")

new_username = "John Doe"
new_email = "johndoe@example.com"
update_git_config(new_username, new_email)
print("已更新git配置")

username, email = read_git_config()
print(f"更新后的git配置：用户名：{username}，邮箱：{email}")