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I want to remove ALL symbols from my string efficiently. 

x = hello!! r = dict.fromkeys(map(ord, '\n ' + string.punctuation)) x.translate(r)

I expected this to remove all symbols instead of only a full stop (.)

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  • What dou mean by symbols? Do you want to keep only ascii-chars? Only letters and numbers? Commented Sep 10, 2019 at 9:51
  • Yeah, I would like to keep letters and numbers and remove all other characters such as punctuation Commented Sep 10, 2019 at 9:55

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What about using re.sub to remove all string.punctuation and ' \n':

x = re.sub('|'.join(map(re.escape, string.punctuation + ' \n')), '', x)

You could also use the following regex if you want to keep only alphabet and digit characters:

x = re.sub('[^a-zA-Z0-9]', '', x)
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