Как сделать так чтобы символы в паролях не повторялись

import random
import string
 
 
def generate_password(m):
    x = random.randint(1, m - 2)
    y = random.randint(1, m - x - 1)
    z = m - x - y
    le = []
    i = 0
    while i < x:
        n = random.choice(string.digits)
        if n != '1' and n != '0':
            le.append(n)
            i += 1
 
    i = 0
    while i < y:
        u = random.choice(string.ascii_uppercase)
        if u != 'I' and u != 'O':
            le.append(u)
            i += 1
 
    i = 0
    while i < z:
        w = random.choice(string.ascii_lowercase)
        if w != 'l' and w != 'o':
            le.append(w)
            i += 1
 
    random.shuffle(le)
 
    return ''.join(le)
 
 
def main(n, m):
    list_of_passwords = []
    for i in range(n):
        list_of_passwords.append(generate_password(m))
    return list_of_passwords
 
 
print("Случайный пароль из 7 символов:", generate_password(7))
print("10 случайных паролей длиной 15 символов:")
print(*main(10, 15), sep="\n")

while i < x:
        n = random.choice(string.digits)
        if n != '1' and n != '0' and not n in le:
            le.append(n)
            i += 1

print("Случайный пароль из 7 символов:" , generate_password(7))  
print("10 случайных паролей длиной 15 символов:")  
print(*main(10, 15), sep="\n")

def generate_password():
    password = ''
    string_symbols = "1234567890-=|!@#$%^&*()_+qwertyuiop[]asdfghjkl;z"
    string_symbols += "xcvbnm,.QWERTYUIOP{}ASDFGHJKL:ZXCVBNM<>?~"
    list_symbols = list(string_symbols)
    random.shuffle(list_symbols)
    for number in range(0, 16):
        password = password + list_symbols[number]
    return password

import random
 
 
def generate_password(_):
    password = ''
    string_symbols = "1234567890qwertyuiopasdfghjklz"
    string_symbols += "xcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"
    list_symbols = list(string_symbols)
    random.shuffle(list_symbols)
    for number in range(0, 16):
        password = password + list_symbols[number]
    return password
 
 
def main(n, m):
    list_of_passwords = []
    for i in range(n):
        list_of_passwords.append(generate_password(m))
    return list_of_passwords
 
 
 
print("Случайный пароль из 7 символов:" , generate_password(7))
print("1 случайный пароль длиной 3 символа:")
print(*main(1, 3), sep="\n")

def generate_password():
    password = []
    number_symbols = "1234567890"
    string_symbols = "-=|!@#$%^&*()_+qwertyuiop[]asdfghjkl;zxcvbnm,.QWERTYUIOP"
    string_symbols += "{}ASDFGHJKL:ZXCVBNM<>?~"
    list_string_symbols = list(string_symbols)
    list_number_symbols = list(number_symbols)
    random.shuffle(list_string_symbols)
    random.shuffle(list_number_symbols)
    value = random.randint(1, 7)
    for number in range(0, value):
        password.append(list_number_symbols[number])
    value = 16 - value
    for number in range(0, value):
        password.append(list_string_symbols[number])
    random.shuffle(password)
    password = ''.join(password)
    return password

from random import sample, shuffle
from string import (
    ascii_uppercase as upper,
    ascii_lowercase as lower,
    digits,
    punctuation
)
 
symbols = [upper, lower, punctuation, digits]
 
 
def get_password(pwd_len):
    assert 7 < pwd_len < 17
    n, rest = divmod(pwd_len, 4)
    lens = [n]*3+[n+rest]
    pwd = []
    for i, chars in enumerate(symbols):
        pwd.extend(sample(chars, lens[i]))
    shuffle(pwd)
    return ''.join(pwd)
 
 
print(get_password(8))