The argument width of pygame.draw.rect() fills a rect problem

I’m struggling with pygame.draw.rect(). My goal is to make outline(border line) of a rectangle appear.

Issue

I put a text:

• text_surf = test_font.render('Rect Test', False, 'black')
• screen.blit(text_surf, text_rect)

I put a pink rectangle under the text:

• text_rect = text_surf.get_rect(center=(400, 100))
• pygame.draw.rect(screen, 'pink', text_rect)

Last, put another rectangle under the previous one, and used width argument to make green outline:

• pygame.draw.rect(screen, 'green', text_rect, 50)

I ran my code. I only saw a text and a green rectangle (not green outline)

What I tried

• I wrote an argument name width to specify what the int is for.
  • pygame.draw.rect(screen, 'green', text_rect, width=50) -> didn’t work
• I changed the order of code for the rectangles. -> didn’t work
  • I could only saw a text and a pink rectangle

pygame.draw.rect(screen, 'pink', text_rect)
pygame.draw.rect(screen, 'green', text_rect, 50)
screen.blit(text_surf, text_rect)

# Change order -> didn't work!
pygame.draw.rect(screen, 'green', text_rect, 50)
pygame.draw.rect(screen, 'pink', text_rect)
screen.blit(text_surf, text_rect)

How can I make outline appear?

My code

from cgitb import text
import pygame
from sys import exit

pygame.init()

screen = pygame.display.set_mode((800, 400))
pygame.display.set_caption('Rect Test')
clock = pygame.time.Clock()
test_font = pygame.font.Font(None, 50)

# Text and rectangle
text_surf = test_font.render('Rect Test', False, 'black')
text_rect = text_surf.get_rect(center=(400, 100))


while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()

    pygame.draw.rect(screen, 'pink', text_rect)

    # I want to make a border line but it fills the rectangle
    pygame.draw.rect(screen, 'green', text_rect, 50)
    screen.blit(text_surf, text_rect)

    pygame.display.update()
    clock.tick(60)

What I want

What I got