How to reference the relative directory when creating a photoimage

[menator01]

This works for me

import tkinter as tk
import os
from functools import partial

def print_selected(var):
    label['font'] = ('times', 30)
    label['text'] = var

suites = ['heart', 'diamond', 'club', 'spade']
img_dir = os.getcwd()
print(img_dir)
root = tk.Tk()
root.title('Card Suites')
root.geometry('800x450+250+250')

col = 0
option = tk.StringVar()
option.set(suites[0])
for suite in suites:
    suite_img = tk.PhotoImage(file=f'{img_dir}\images\{suite}.png')
    suite_img.img = suite_img
    radio = tk.Radiobutton(root, image=suite_img, value=suite, var=option, \
    command=partial(print_selected, suite), indicatoron=0)
    radio.grid(row=0, column=col)
    col += 1
label = tk.Label(root)
label['text'] = 'default text'
label.grid(column=0, row=1, rowspan=4)

root.mainloop()

output for img_dir

Output:
C:\Users\John Doe\Desktop\cards