Convert String to Camel Case

#'the-stealth-warrior' gets converted to "theStealthWarrior"
#'the_stealth_warrior' gets converted to "theStealthWarrior"
def camel_to_case(text):
    #a list for initially store data
    txt=[]
    #create an empty string to store the final list arrays
    camel_text=''
    start=0
    for i, pointer in enumerate(text):
        if pointer=='_' or pointer=='-':
            txt.append(text[start:i])
            start=i+1
    if len(text)>start:
        txt.append(text[start:])
      for i, txt in enumerate(txt):
        if i == 0: #first character remain same as the input
            camel_text += txt
        else:
            camel_text+=txt.capitalize()
    return camel_text

print(camel_to_case(input(""))
# input as ( To-Test_prb_math-phy_botany-_start)
# it returns (ToTestPrbMathPhyBotanyStart)