Capitalize a string

Question

Does anyone know of a really simple way of capitalizing just the first letter of a string, regardless of the capitalization of the rest of the string?

For example:

Answer 1

this actually gives you a capitalized word, instead of just capitalizing the first letter

cApItAlIzE -> Capitalize

def capitalize(str): 
    return str[:1].upper() + str[1:].lower().......

Answer 2

>>> b = "my name"
>>> b.capitalize()
'My name'
>>> b.title()
'My Name'

Answer 3

What about your_string.title()?

e.g. "banana".title() -> Banana