为什么这个 function 没有返回 output 并且只使用打印？

Question

def get_formatted_text(first,last):
  full_name=(f'{first} {last}').title()
  return full_name #only works with print. Why?

get_formatted_text('Dick','Long')

I don't see any output in my terminal when I do the function call. It works with print function, but I don't understand why print is needed when return will show the output?

Answer 1

Return will not print the value. It only ' returns ' it. When coding directly in the Python terminal it will print the value, but that is the extra capabilities of the terminal, not the return . In all other instances, print is needed to output to the terminal.

Answer 2

its just RETURNING the value its up to u what u do with the value and the the brackets r also not required if u r returning the value

def get_formatted_text(first, last):
    full_name = f'{first} {last}'.title()
    return full_name  # only works with print. Why?


x = get_formatted_text('Dick', 'Long')
print(x)

But if u r returning a value u can even manuplitate like

def get_formatted_text(first, last):
     full_name = f'{first} {last}'.title()
     return full_name  # only works with print. Why?


 x = get_formatted_text('Dick', 'Long')
 print(x.lower())

Answer 3

Your return statement returns the title case string. It does not print the element in the console.

After getting the formatted text you may update it as necessary.

def get_formatted_text(first,last):
  full_name=(f'{first} {last}').title()
  return full_name

formatted_text = get_formatted_text('john','doe')
print(f"Formatted text with title case: {formatted_text}")

Output:

Formatted text with title case: John Doe

Reference:

• What is the formal difference between “print” and “return”?