Python: Random password generator, length of password given by user

Hi, you can increase the characters to generate the password by inserting new characters in the variable 'seq'. Works in Python 3.x

----------------------------------------------------------------------------------------


import random
a= random.randint(100000000, 900000000)
a = str(a)
c = ''
for x in range (1, 50):
    seq='qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM!@#$%^&*()+'
    b=random.choice(seq)
    c= c + b
d= a + c
password = list(d)
random.shuffle(password)
result = ''.join(password)

while True:
    num = int(input('Enter the length of password between 5 to 50 '))
    if num > 50 or num < 5:
        print('Inefficient or insufficient length provided')
    else:
        break

while True:
    if len(result) > num:
        result = result[1:]
    else:
        break
print(result)
input()