Question

我得到了

NameError: global name 'git' is not defined

代表git.add(log_filename)。我不明白为什么在repo = Repo(ABSOLUTE_PATH)之前调用git = repo.git和original_function = function(ABSOLUTE_PATH, GIT_WORKING_DIR, log_name, remove_logs)。不应该git对象可用于被调用的函数吗？

我想在这个实例中使用装饰器，因为单独的函数将使用类似的功能。如何让这个装饰工作？

 def raw_git(function):
    @wraps(function)
    def wrapper(ABSOLUTE_PATH, GIT_WORKING_DIR,
            log_name=None, remove_logs=None):
        try:
            repo = Repo(ABSOLUTE_PATH)
            git = repo.git
        except NoSuchPathError:
            raise Exception("Error in finding local git path!")
        original_function = function(ABSOLUTE_PATH, GIT_WORKING_DIR,
                log_name, remove_logs)
        return original_function
    return wrapper


@raw_git
def git_add_log(ABSOLUTE_PATH, GIT_WORKING_DIR,
        log_name=None, remove_logs=None):
    log_name = GIT_WORKING_DIR + "/" + log_name
    try:
        git.add(log_filename)
        git.commit(message="Removing oldest logs")
        git.push()
    except GitCommandError:
        raise Exception("There was an error with git command "
                "for removing oldest log(s)")

Answer 1

git是包装函数中的本地名称。它在该命名空间之外是不可见的，因此不在git_add_log。

中

改为给该函数一个git参数，并在调用包装函数时传入该对象：

def raw_git(function):
    @wraps(function)
    def wrapper(ABSOLUTE_PATH, GIT_WORKING_DIR,
            log_name=None, remove_logs=None):
        try:
            repo = Repo(ABSOLUTE_PATH)
            git = repo.git
        except NoSuchPathError:
            raise Exception("Error in finding local git path!")
        original_function = function(git, ABSOLUTE_PATH, GIT_WORKING_DIR,
                log_name, remove_logs)
        return original_function
    return wrapper


@raw_git
def git_add_log(git, ABSOLUTE_PATH, GIT_WORKING_DIR,
        log_name=None, remove_logs=None):
    log_name = GIT_WORKING_DIR + "/" + log_name
    try:
        git.add(log_filename)
        git.commit(message="Removing oldest logs")
        git.push()
    except GitCommandError:
        raise Exception("There was an error with git command "
                "for removing oldest log(s)")

Python装饰器对象不可用

1 个答案: