[Python] How to make a new .py file

I want to make new file but first choose directory. This code works but a directory is already set

new_file = input("File name\n")
new_file = new_file.lower().replace(".", "").replace(" ", "_")
print(new_file)
open_file = open('D:\Python projects\%s.py' % new_file, 'w')


Also tried like this but not happen

import tkinter as tk
from tkinter import filedialog

root = tk.Tk()
root.withdraw()
file_path = filedialog.askopenfilename()
new_file = input("Name file\n")
open_file = open(f"{file_path}\%s.py" % new_file, 'w')

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