In a sentence, I want to remove a complete string which contains special characters.
Input is ["i am in jersey1&2","this code is %bdn2*nn"]
Expected output is ["i am in","this code is"]
import re Dsp = ["i am in jersey1&2","this code is %bdn2*nn"] Dsp1 = [] for i in Dsp: Dsp = [re.sub('^\W+$'," ",j) for j in i] Dsp1.append("".join(Dsp)) I got
Dsp1 = ["i am in jersey12","this code is bdn2nn"] but the expected output is
Dsp1 = ["i am in", "this code is"] Using str.isalpha
Input = ["i am in jersey1&2","this code is %bdn2*nn"] for i in Input: print(" ".join(j for j in i.split() if j.isalpha())) Output:
i am in this code is You're expecting re.sub to match and replace on word level, where words are substrings delimited by whitespace within a string. Regular expressions will match on a character level, unless you manage to tell them otherwise (which is a bit complicated) or you split the strings on whitespace before applying a special-character matching regex:
Dsp = ["i am in jersey1&2","this code is %bdn2*nn"] Dsp1 = [] for sentence in Dsp: cleaned_sentence = [] for word in sentence.split(' '): if not re.search(r'\W'): cleaned_sentence.append(word) DSP1.append(' '.join(cleaned_sentence)) print(DSP1) # ['i am in', 'this code is'] 
for i in Dsp:it will iterate through all the characters in that sentence one by one, that means it wont consider individual string atifor every iteration. Why dont you try to split the sentence with delimiter as " " (blank space) then you will have a list of individual strings. Then you can check individual strings and remove the ones you dont need.