"Python - 如何使用 slice 方法、find 和 rfind 在 python 上删除多个字符"

Question

I need some help in removing two sets of curly brackets with string.Right now it's only removing one set. I tired to use find and rfind to find the first and last occurence of the string index and using slice method to cut out the curly brackets but it can only remove one set of it.

 def help_mmtf():
    
       while True:
    
           user_input = input("Filename?")
           text_input = str(user_input)
    
           if (text_input !=""):
               
    
                word = text_input
                
                index1 = word.find("{")
                index2 = word.find("}")
                print(index1) 
                print(index2)
    
            
                index3 = word.rfind("{")
                index4 = word.rfind("}")
    
                print(index3)
                print(index4)
               
    
                splice_input = text_input[:index1] + text_input[index4+1:]
                print(f'"{splice_input}"')
    
      else:
               
                
               break
            

Answer 1

Use sub function from re module:

import re

s = "{fefeef}this{feofeow}.4849"
out = re.sub(r'{[^}]*}', '', s)

Output:

>>> out
'this.4849'

For more explanation: Regex101

Answer 2

You can use sub<\/code>

import re


def help_mmtf():
    while True:

        user_input = input("Filename?")
        text_input = str(user_input)

        if (text_input != ""):
            word = text_input



            splice_input = re.sub("\{.*?\}", "", word)
            print(f'"{splice_input}"')

        else:


         break