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What is the difference between

car_sales["Price"]=car_sales["Price"].str.replace('[\$\,\.]','')

and

car_sales["Price"]=car_sales["Price"].str.replace('[.$,]','')

after removing the escape character this code works same and fine. so, what was it's use.

Kulbhushan Singh
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    Answer: `[.$,]` is a _character class_, and while dot and dollar sign are metacharacters, they do not need to be escaped when they appear inside a character class. So, your first version, while correct, is superflous; you don't need to escape any of those characters with backslash. – Tim Biegeleisen Aug 18 '20 at 10:31
  • thanks tim, i thought the same but you cleared – Kulbhushan Singh Aug 18 '20 at 10:42

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