Password Generator

Simple but flexible password generator.

---

###Features:

#####Password generation:

• It allows you to specify the character set:
  • by enabling/disabling character classes:
    • uppercase ASCII letters A-Z
    • lowercase ASCII letters a-z
    • digits 0-9
    • punctuation !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
    • space
  • by adding custom characters
  • by blacklisting custom characters
• It allows you to specify any desired length of the password.
• It allows you to limit the maximum allowed number of occurrences of the same character, but still takes care that the password length can be reached.

#####Usage

• ######Interactive mode:

  Run the script without any arguments and you get to the interactive mode which looks like this example:

  $ ./pwgen.py
  ***** Password Generator - © 2016 ByteCommander *****
  
  The default character set to generate passwords is this (not including the arrows):
  → !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~←
  Do you want to change the character set? (y/N) y
  Do you want to allow uppercase letters 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'? (Y/n) y
  Do you want to allow lowercase letters 'abcdefghijklmnopqrstuvwxyz'? (Y/n) y
  Do you want to allow digits '0123456789'? (Y/n) y
  Do you want to allow punctuation '!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~'? (Y/n) n
  Do you want to allow space ' '? (Y/n) n
  Please enter additional characters you want to allow (if any): -_
  Please enter characters you want to blacklist (if any): Xx0
  The default password length is 12 characters.
  Enter your desired length or leave it blank to use the default: 20
  By default, there is no limit how often a character may appear in the password.
  Enter your desired maximum duplicate character limit or leave it blank to use the default.
  A value of 0 means no limit: 1
  And your new password is:
  +----------------------+
  | jJ-USofDig7m3eO2vREd |
  +----------------------+
  Generate another password with the same settings? (Y/n)
  And your new password is:
  +----------------------+
  | VZCbKuQFIGHjqSBdgN9M |
  +----------------------+
  Generate another password with the same settings? (Y/n) n
  Thank you for using this password generator. Have a nice day!
  

• ######Command-line mode:

  Run the script with the command-line arguments described in its help (type pwgen.py --help or pwgen.py -h or see the block below) and you use it in command-line mode. This is useful to embed this tool into your own scripts, create your personal shortcuts for it or quickly launch it with a specific configuration.

  Help screen:

  $ ./pwgen.py -h
  usage: pwgen.py [-h] [-n AMOUNT] [-m LIMIT] [-q] [-u] [-l] [-d] [-p] [-s]
                  [-a ADDITIONAL] [-b BLACKLIST]
                  length
  
  Highly customizable random password generator
  
  positional arguments:
    length                length of the password to generate
  
  optional arguments:
    -h, --help            show this help message and exit
    -n AMOUNT, --amount AMOUNT
                          how many passwords to create
    -m LIMIT, --max-duplicate-chars LIMIT
                          limits how often the same character may occur in a
                          password at most
    -q, --quiet           print only one password per line, nothing else
  
  Character set specification:
    -u, --uppercase       include uppercase letters A-Z into the available
                          character set
    -l, --lowercase       include lowercase letters a-z into the available
                          character set
    -d, --digits          include digits 0-9 into the available character set
    -p, --punctuation     include punctuation into the available character set
    -s, --space           include the standard space into the available
                          character set
    -a ADDITIONAL, --additional ADDITIONAL
                          additional characters to include into the available
                          character set
    -b BLACKLIST, --blacklist BLACKLIST
                          characters to exclude from the available character set
  
  Run it without any arguments for interactive mode.
  

  Example run:

  $ ./pwgen.py 10 -uld -a'-_' -n6
  ***** Password Generator - © 2016 ByteCommander *****
  
  Using this character set (excluding the arrows):
  →-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz←
  There are no duplicate character limits.
  
  Generating 6 passwords of length 10:
  
  n0j1MWlig5
  KcrVnGIt34
  jTmDSRz9Pj
  MNYKEwcHcf
  Dqp_uRTEya
  5Zw1uA9NtB