CODEWITHSUNDEEP
python
Robsmith
Robsmith

Reputation: 473

Extract and Join Text in Nested Parentheses

I have strings that contain text in parentheses and nested parentheses like this:

(Order Filled (today))

I want to extract the text to give the following result:

Order Filled today

What's the most efficient way of doing this?

Upvotes: 1

Views: 132

Answers (2)

Parvat R
Parvat R

Reputation: 846

If your goal is just to remove all parentheses, then you can use replace function

string = '(Order Filled (today))'
string.replace('(','').replace(')','')

Update: Removing only those parentheses that has endings.

I know you asked for most efficient way but, when you use replace function, that will also remove the non nested parentheses, so I have a function that removes only nested parentheses:

def markup(message):
    msg = message
    result = ""
    markups = "()"
    num = 0

    # Check if the parentheses
    def has_ending(_str, i, msg):
        if _str == "(":
            return ")" in msg[i+1:]
        elif _str == ")":
            return False
        else:
            return False
  
    for i in range(len(msg)) :
        t = msg[i]
        s = t

        # if the char is '(' or ')'
        if t in markups:
            if has_ending(t, i, msg) and num%2 == 0 :
                s = ""
                num += 1 
            elif t == ")" and num%2 == 1 :
                s = ""
                num += 1 
        # else
        else :
            s = t
        result += s
    return result

print(markup('Hello )(O) (O)( (O)'))
# prints 'Hello )O O (O'

Upvotes: 3

Rob Hulley
Rob Hulley

Reputation: 21

string = '(Order Filled (today))'

x = ''.join(x for x in string if x not in '()')

i prefer this as it extends more easily if you wish to remove more characters

Upvotes: 2

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