.capitalize() doesn't work in Python in this case-CodePudding

Given a list of words (text), i want to take each word except the first one and capitalize it. It doesn't work for neither i.capitalize() and i = i.capitalize(). Why?

def capitalize_words(text):
    for i in text[1:]:
        i.capitalize()
    return text

CodePudding user response：

Use should return the modified data:

def capitalize_words(text):
    return " ".join([i.capitalize() for i in text])

CodePudding user response：

The problem that you return the original list without mutate its values. The line i.capitalize() has no affect on the output of your function.

Instead, you can populate a new list and return it, for example:

def capitalize_words(text):
    capit_text = []
    for i in text[1:]:
        capit_text.append(i.capitalize())
    return capit_text

or, using list comprehension:

def capitalize_words(text):
    return [i.capitalize() for i in text[1:]]

CodePudding user response：

Because you return the original list that has not been changed

def capitalize_words(text):
    return [word.capitalize() for word in text[1:]]

and if you want also text[0] but not capitalized

return [text[0]]   [word.capitalize() for word in text[1:]]