错误日志1
运行python报:
ImportError: No module named defusedxml.
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解决方法
就是有个python包没找到,装上就行:
pip install defusedxml
# 如果是系统自带的python:
sudo pip -H install defusexml
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错误日志2
为python3编译ros vision_opencv中的cv_bridge时,报:
error: 'CV_LOAD_IMAGE_UNCHANGED' was not declared in this scope.
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直接原因是编译器没找到opencv中这个常量的定义,根本原因是opencv4中把下面这些常量替换了:
opencv3 opencv4
CV_LOAD_IMAGE_UNCHANGED IMREAD_UNCHANGED
CV_LOAD_IMAGE_GRAYSCALE IMREAD_GRAYS
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