How to Remove Punctuation from a String in Python
This tutorial discussed methods for removing punctuation from strings in Python. This is a particularly useful step when preprocessing and cleaning text data for NLP.
stringRemove punctuation from a string in Python using class methods
We can Stringremove punctuation marks from a string in Python using the inbuilt functions provided by the String class. The following example illustrates this.
s = "string. With. Punctuations!?"
out = s.translate(str.maketrans("", "", string.punctuation))
print(out)
Output:
'string With Punctuations'
The above method removes all punctuation marks from a given input string.
regexRemove punctuation from a string in Python using
We can also remove punctuation marks from a string using in Python regex. The following example illustrates this.
import re
s = "string. With. Punctuation?"
out = re.sub(r"[^\w\s]", "", s)
print(out)
Output:
'string With Punctuations'
string.punctuationRemove punctuation from a string in Python using
It is similar to the first method discussed. string.punctuationIt contains all the characters that are considered punctuation in English. We can use this list to exclude all punctuation from a string. The following example illustrates this.
s = "string. With. Punctuation?"
out = "".join([i for i in s if i not in string.punctuation])
print(out)
Output:
'string With Punctuations'
replace()Remove punctuation from a string in Python using
In Python, we can also use to replace()remove punctuation from a string. Again, we use string.punctuationto define a list of punctuation and then replace all punctuation with an empty string to remove the punctuation. The following example illustrates this.
s = "string. With. Punctuation?"
punct = string.punctuation
for c in punct:
s = s.replace(c, "")
print(s)
Output:
'string With Punctuations'
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