#Use the function list()
word = list(word)
l = list('abcd') # ['a', 'b', 'c', 'd']
l = map(None, 'abcd') # ['a', 'b', 'c', 'd']
l = [i for i in 'abcd'] # ['a', 'b', 'c', 'd']
import re # importing regular expression module
l = re.findall('.', 'abcd')
print(l) # ['a', 'b', 'c', 'd']
string to list of char Python