I want to concatenate characters in a list but i keep getting a type error-CodePudding

I keep getting this error, I dont know where I went wrong. Please Help this is the error i keep getting:

Traceback (most recent call last):
  File "main.py", line 27, in <module>
    print('\nPASSOWRD: ', ''.join(letters_random))
TypeError: sequence item 3: expected str instance, int found

code:

import string
import random

letters = [p for p in string.ascii_letters]
numbers = [i for i in range(0,10)]
symbol = ['!', '@', '#', '$', '%', '&', '*', '(', ')']
letters_random = []
print('Welcome to the random Password Generator!\n')
user_input_letter = int(input("How many letters do you want for you password: "))
user_input_num = int(input("How many numbers do you want for you password: "))
user_input_symb = int(input("How many symbols do you want for you password: "))

for letter in range(0, user_input_letter):
  letters_random.append(random.choice(letters))

for num in range(0, user_input_num):
  letters_random.append(random.choice(numbers))

for letter in range(0, user_input_symb):
  letters_random.append(random.choice(symbol))

print('\nPASSOWRD: ', ''.join(letters_random))

CodePudding user response：

Change as per below, you cannot merge INT & STR

numbers = [str(i) for i in range(0,10)]

CodePudding user response：

join() requires a list of strings. However, you are building a list that has some strings and some integers. You should use digit characters instead of numbers.

CodePudding user response：

The .join() method expects string elements in the sequence it is iterating over. Your numbers list is a list of ints.

You should convert each int to a string as you append it:

for num in range(0, user_input_num):
  letters_random.append(str(random.choice(numbers)))