How can I loop through a string and print certain items?

Question

lst = \'AB[CD]EF[GH]\'

Output: [\'A\',\'B\',\'CD\',\'E\',\'F\',\'GH\']

This is what I\'ve tried but it\'s not working...

while         


        

Answer 1

Please try the following code snippet.

my_string = 'AB[CD]EF[GH]'

lst = []
ind = 0
n = len(my_string)

while (ind < n):
    if my_string[ind] == '[':
        # if '[' is found, look for the next ']' but ind should not exceed n.
        # Your code does not do a ind < n check. It may enter an infinite loop.
        ind += 1 # this is done to skip the '[' in result list
        temp = '' # create a temporary string to store chars inside '[]'
        while ind < n and my_string[ind] != ']':
            temp = temp + my_string[ind]
            ind+=1
        lst.append(temp) # add this temp string to list
        ind += 1 # do this to skip the ending ']'.
    else:
        # If its not '[', simply append char to list.
        lst.append(my_string[ind])
        ind += 1

print(lst)