Python trying to randomly select the value from list within a list results in the TypeError: list expected at most 1 argument, got 4

Question

I tried to search a lot but could not find proper resolution hence posting here. I am new to Python and I am trying to create a simple password generator application which is of 8 characters and should consist of 1 uppercase, 1 lowercase, 1 special character, and 1 numeric values. I am able to get these things and create a 4 letter password with Uppercase, lowercase, special character, and numeric values. For the remaining 4 characters, I want to choose the options randomly from the list which is made up of all these options but for some reason, I am unable to obtain the values randomly for it. I am getting the following error when I try to access the random choice from the list within a list:

TypeError: list expected at most 1 argument, got 4

I wanted to know how can I select a random value which can be either lowercase, uppercase, numeric or special characters for the remaining 4 values in my final password. I know I can use the for loop to accomplish the same but I would like to do it randomly so I am trying this approach.

Following is the code I have so far and some of the things I have tried to obtain the random values located list within a list:

import random
import string

def passwordGenerator():
    lowerchars      =   list(string.ascii_lowercase)
    upperchars      =   list(string.ascii_uppercase)
    speciachars     =   ['&','!','_','@']
    numericchars    =   list(range(0,9))
    otherrandom     =   list(string.ascii_lowercase, string.ascii_uppercase, range(0,9), ['&','!','_','@'])
    #otherrandom     =   list(list(string.ascii_lowercase), list(string.ascii_uppercase) list(range(0,9)), ['&','!','_','@'])
    print(random.choice(otherrandom))
    #print(random.choice(random.choice(otherrandom)))
    password        = random.choice(lowerchars) + random.choice(upperchars) + random.choice(speciachars) + str(random.choice(numericchars))

passwordGenerator()

It seems like you are aiming for this: `otherrandom = lowerchars + upperchars + numericchars + speciachars` — Mark, Apr 17 '20 at 16:06

score 2 · Accepted Answer · answered Apr 17 '20 at 16:07

2

The list() method only takes one argument. You can do

otherrandom = lowerchars + upperchars + numericchars + speciachars

This adds all of the lists together, which is probably what you want.

answered Apr 17 '20 at 16:07

izhang05

679
1
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Yup, that what I was looking for. Thanks a lot :) – BATMAN_2008 Apr 17 '20 at 16:19

Python trying to randomly select the value from list within a list results in the TypeError: list expected at most 1 argument, got 4

1 Answers1