*only use exception handling when you don't have an easy

alternative.

from tkinter import *
from tkinter import messagebox
from random import choice, randint, shuffle
import pyperclip
import json

# ---------------------------- PASSWORD GENERATOR ------------------------------- #
def generate_password():

    #Password Generator Project
    letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
    numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
    symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']

    #Angela's method

    # password_letters = [choice(letters) for char in range(randint(8, 10))]
    # password_symbols = [choice(symbols) for char in range(randint(2, 4))]
    # password_numbers = [choice(numbers) for char in range(randint(2, 4))]
    #
    # password_list = password_letters + password_symbols + password_numbers

    password_list = []

    password_list += [choice(letters) for char in range(randint(8, 10))]
    password_list += [choice(symbols) for char in range(randint(2, 4))]
    password_list += [choice(numbers) for char in range(randint(2, 4))]

    shuffle(password_list)
    #Add this to eliminate prepended password
    password = password_input.delete(0, END)
    password = "".join(password_list)
    password_input.insert(0, password)
    pyperclip.copy(password)

    # password = ""
    # for char in password_list:
    #   password += char

# ---------------------------- SAVE PASSWORD ------------------------------- #
def save():

    # data = open("data.txt", "a")
    # data.write(f"{website_input} | {email_input} | {password_input}")
    # data.close()
    website = website_input.get()
    email = email_input.get()
    password = password_input.get()
    new_data = {
        website: {
            "email": email,
            "password": password,
        }
    }

    if website == "" or password == "":
        messagebox.showinfo(title="Oops", message="Please don't leave any fields empty!")
    else:
        # is_ok = messagebox.askokcancel(title=website, message=f"These are the details entered: \\nEmail: {email} "
        #                                                       f"\\nPassword: {password}\\n Is it ok to save?")
        # if is_ok:
        try:
            with open("data.json", "r") as data_file:
            # data_file.write(f"{website} | {email} | {password}\\n")
            # Reading old data
                data = json.load(data_file)

        except FileNotFoundError:
            with open("data.json", "w") as data_file:
                json.dump(new_data, data_file, indent=4)

        else:
            # Updating old data with new data
            data.update(new_data)

            with open("data.json", "w") as data_file :
                # Saving updated data
                json.dump(data, data_file, indent=4)

        finally:
            website_input.delete(0, END)
            password_input.delete(0, END)

def find_password():
    website = website_input.get()
    try:
        with open("data.json", "r") as data_file:
            data = json.load(data_file)

    except FileNotFoundError:
        messagebox.showinfo(title="Error", message="No Data File Found")

    else:
        if website in data:
            email = data[website]["email"]
            password = data[website]["password"]
            messagebox.showinfo(title=website, message=f"Email: {email}\\nPassword: {password}")
        else:
            messagebox.showinfo(title="Error", message="No Detail for the website exists")

# ---------------------------- UI SETUP ------------------------------- #
window = Tk()
window.title("Password Manager")
window.config(padx=50, pady=50)

canvas = Canvas(width=200, height=200)
logo = PhotoImage(file="logo.png")
canvas.create_image(100, 100, image=logo)
canvas.grid(column=1, row=0)

#Labels
website = Label(text="Website: ")
website.grid(column=0, row=1)

email = Label(text="Email/Username: ")
email.grid(column=0, row=2)

password = Label(text="Password: ")
password.grid(column=0, row=3)

#Entries
website_input = Entry(width=21)
website_input.grid(column=1, row=1)
website_input.focus()

email_input = Entry(width=35)
email_input.insert(0, "[email protected]")
email_input.grid(column=1, row=2, columnspan=2)

password_input = Entry(width=21)
password_input.grid(column=1, row=3)

#Buttons
generate = Button(text="Generate Password", command=generate_password)
generate.grid(column=2, row=3)
add = Button(text="Add", width=36, command=save)
add.grid(column=1, row=4, columnspan=2)
search = Button(text="Search", width=13, command=find_password)
search.grid(column=2, row=1)

canvas.mainloop()