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以便于后面的逻辑实现 for tag in img.find_apriltags(): if(tag): else: 这样好像不行欸，没看到有AprilTag也进不去else
tag= img.find_apriltags if tag: else:
@yuan 在 怎么能判断有没有找到AprilTag标签 中说：
tag= img .find_apriltags if tag: else:
这样也不太对....吧
tag = img.find_apriltags() if tag: xxx else: xxx
