单机测试python编写的mapper时出现/usr/bin/python3^M: bad interpreter: No such file or directory
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在单机测试python编写的mapper时出现
hadoop@ub1401:~/hadoop/hadoopfile$ cat keywords-blank-1.txt|./PictureDownloadMapper.py
bash: ./PictureDownloadMapper.py: /usr/bin/python3^M: bad interpreter: No such file or directory
经查有可能是
1、执行权限的问题
2、python版本的问题
3、python文件格式的错误。
权限问题利用chmod +x ***py即可
版本问题，在执行时或者在py文件中选择好python的版本
格式问题参考博文，解决过程如下：
hadoop@ub1401:~/hadoop/hadoopfile$ vi PictureDownloadMapper.py
在vi编辑器下：
：set ff 或 ：set fileformat
可以查看到当前的格式（fileformat=dos 或 fileformat=unix）
修改格式为unix
：set ff=unix或者 ：set fileformat=unix
：wq保存退出
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