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0714 1 pm, review,

2022-07-18 12:35:00 【Ah, six six six】

 

 

 

 

 

 

 

 

 

ctrl+ Left click ,

Slashes cannot write comments , Comments can be written in brackets ,

 

 

 

add hdfs Head statement ,

 

r Represents absolute string , No escape ,

f Variables can be added after ,

 

\\t, The double slash indicates that it is not an escape ,

Or add r Represents absolute string ,

 

 

 

 

 

 

Phase is the global label ,

 

 

 

 

 

  I've seen it ：：：：：：：

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