convert_snake_case_to_uppercase.py

class SnakeUpperCaseTransformer():

    def __init__(self, string_param):
        self.string_param = string_param
    
    def showString(self):
        print(self.string_param)

    def convertToUpperCase(self):
        rez = []
        for x in self.string_param.title():
            rez.append(x.replace("_", ""))

        res = ''

        for f in rez:
            res+=f

        self.string_param = res;

        self.showString()
    def converToSnakeCase(self):
        rez = []
        index = 0;
        for x in self.string_param:
           
            if x.isupper():
                x = x.lower()
                if index != 0:
                    rez.append('_')
            rez.append(x)
            index += 1
        res = ''

        for f in rez:
            res+=f

        self.string_param = res;
        self.showString()



while True:
    print('\n********************word converter********************')
    word = input('Enter your word: ')

    instance = SnakeUpperCaseTransformer(word)

    res = input('Do you want to convert it to snake case Y/n?')
    
    if res.lower() == 'y':
        print('******************Converted to snakecase******************\n')
        instance.converToSnakeCase()
    else:
        print('******************Converted to uppercase******************\n')
        instance.convertToUpperCase()