Use upper case on functions and for loops-CodePudding

Newbie here.

I have the following code:

def names(*args):
    for x in args:
      return sorted(args)

print(names("john", "allison", "tony", "melissa"))

I am able to sort the names but I'm not able to use the method .upper() in order to make the name all caps.

CodePudding user response：

The args is essentially a tuple. You can either use map to convert to upper, or append to a new list.

First way:

def toUpper(s):
  return s.upper()

def names(*args):
  return sorted(list(map(toUpper, args)))

Second way:

def names(*args):
  upperNames = []
  for x in args:
    upperNames.append(x.upper())
  return sorted(upperNames)

Both will return lists, just use tuple(names(...)) to get in tuple form.

CodePudding user response：

You can do it with a list comprehension:

def names(*args):
    return sorted([i.upper() for i in args])

print(names("john", "allison", "tony", "melissa"))

Output:

['ALLISON', 'JOHN', 'MELISSA', 'TONY']

Edit: without a list comprehension, you can do this:

def names(*args):
    upper_lst = []
    for i in args:
        upper_lst.append(i.upper())
    return sorted(upper_lst)