Need to remove quotes inside the array of a string using python

We can use re.sub here with a callback lambda function:

inp = "'Siva', ['Aswin','latha'], 'Senthil',['Aswin','latha']"
output = re.sub(r'\[.*?\]', lambda x: x.group().replace("'", ""), inp)
print(output)

This prints:

'Siva', [Aswin,latha], 'Senthil',[Aswin,latha]

import re
input = "'Siva', ['Aswin','latha'], 'Senthil',['Aswin','latha']"


print(re.sub(r"(?<=\[).*?(?=\])", lambda val: re.sub(r"'(\w+?)'", r"\1", val.group()), input))

# 'Siva', [Aswin,latha], 'Senthil',[Aswin,latha]

You can try something like this if you don't want to import re:

X = eval("'Siva', ['Aswin','latha'], 'Senthil',['Aswin','latha']")
Y = []
for x in X:
    Y.append(f"[{', '.join(x)}]" if isinstance(x, list) else f"'{x}'")
print(", ".join(Y))

You can use re.findall with an alternation pattern to find either fragments between ] and [, or otherwise non-single-quote characters, and then join the fragments together with ''.join:

''.join(re.findall(r"[^\]]*\[|\][^\[]*|[^']+", input))

Demo: https://replit.com/@blhsing/ClassicFrostyBookmark

This is generally more efficient than using re.sub with a callback since there is overhead involved in making a callback for each match.