This library extends the native codecs library (namely for adding new custom encodings and character mappings) and provides a myriad of new encodings (static or parametrized, like rot or xor), hence its named combining CODecs EXTension.

$ pip install codext

$ codext -i test.txt encode dna-1
GTGAGCGGGTATGTGA

$ echo -en "test" | codext encode morse
- . ... -

$ echo -en "test" | codext encode braille
⠞⠑⠎⠞

$ echo -en "test" | codext encode base100
👫👜👪👫

$ echo -en "Test string" | codext encode reverse
gnirts tseT

$ echo -en "Test string" | codext encode reverse morse
--. -. .. .-. - ... / - ... . -

$ echo -en "Test string" | codext encode reverse morse dna-2
AGTCAGTCAGTGAGAAAGTCAGTGAGAAAGTGAGTGAGAAAGTGAGTCAGTGAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTTAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTGAGAAAGTC

$ echo -en "Test string" | codext encode reverse morse dna-2 octal
101107124103101107124103101107124107101107101101101107124103101107124107101107101101101107124107101107124107101107101101101107124107101107124103101107124107101107101101101107124103101107101101101107124107101107124107101107124107101107101101101107124124101107101101101107124103101107101101101107124107101107124107101107124107101107101101101107124107101107101101101107124103

$ echo -en "AGTCAGTCAGTGAGAAAGTCAGTGAGAAAGTGAGTGAGAAAGTGAGTCAGTGAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTTAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTGAGAAAGTC" | codext -d dna-2 morse reverse
test string

$ codext add-macro my-encoding-chain gzip base63 lzma base64

$ codext list macros
example-macro, my-encoding-chain

$ echo -en "Test string" | codext encode my-encoding-chain
CQQFAF0AAIAAABuTgySPa7WaZC5Sunt6FS0ko71BdrYE8zHqg91qaqadZIR2LafUzpeYDBalvE///ug4AA==

$ codext remove-macro my-encoding-chain

$ codext list macros
example-macro

$ echo "Test string !" | base122
*.7!ft9�-f9Â

$ echo "Test string !" | base91 
"ONK;WDZM%Z%xE7L

$ echo "Test string !" | base91 | base85
B2P|BJ6A+nO(j|-cttl%

$ echo "Test string !" | base91 | base85 | base36 | base58-flickr
QVx5tvgjvCAkXaMSuKoQmCnjeCV1YyyR3WErUUErFf

$ echo "Test string !" | base91 | base85 | base36 | base58-flickr | base58-flickr -d | base36 -d | base85 -d | base91 -d
Test string !

$ echo "Test string !" | base91 | base85 | base36 | base58-flickr | debase -m 3
Test string !

$ echo "Test string !" | base91 | base85 | base36 | base58-flickr | debase -f Test
Test string !

Getting the list of available codecs:

>>> import codext

>>> codext.list()
['ascii85', 'base85', 'base100', 'base122', ..., 'tomtom', 'dna', 'html', 'markdown', 'url', 'resistor', 'sms', 'whitespace', 'whitespace-after-before']

>>> codext.encode("this is a test", "base58-bitcoin")
'jo91waLQA1NNeBmZKUF'

>>> codext.encode("this is a test", "base58-ripple")
'jo9rA2LQwr44eBmZK7E'

>>> codext.encode("this is a test", "base58-url")
'JN91Wzkpa1nnDbLyjtf'

>>> codecs.encode("this is a test", "base100")
'👫👟👠👪🐗👠👪🐗👘🐗👫👜👪👫'

>>> codecs.decode("👫👟👠👪🐗👠👪🐗👘🐗👫👜👪👫", "base100")
'this is a test'

>>> for i in range(8):
        print(codext.encode("this is a test", "dna-%d" % (i + 1)))
GTGAGCCAGCCGGTATACAAGCCGGTATACAAGCAGACAAGTGAGCGGGTATGTGA
CTCACGGACGGCCTATAGAACGGCCTATAGAACGACAGAACTCACGCCCTATCTCA
ACAGATTGATTAACGCGTGGATTAACGCGTGGATGAGTGGACAGATAAACGCACAG
AGACATTCATTAAGCGCTCCATTAAGCGCTCCATCACTCCAGACATAAAGCGAGAC
TCTGTAAGTAATTCGCGAGGTAATTCGCGAGGTAGTGAGGTCTGTATTTCGCTCTG
TGTCTAACTAATTGCGCACCTAATTGCGCACCTACTCACCTGTCTATTTGCGTGTC
GAGTGCCTGCCGGATATCTTGCCGGATATCTTGCTGTCTTGAGTGCGGGATAGAGT
CACTCGGTCGGCCATATGTTCGGCCATATGTTCGTCTGTTCACTCGCCCATACACT
>>> codext.decode("GTGAGCCAGCCGGTATACAAGCCGGTATACAAGCAGACAAGTGAGCGGGTATGTGA", "dna-1")
'this is a test'

>>> codecs.encode("this is a test", "morse")
'- .... .. ... / .. ... / .- / - . ... -'

>>> codecs.decode("- .... .. ... / .. ... / .- / - . ... -", "morse")
'this is a test'

>>> with open("morse.txt", 'w', encoding="morse") as f:
	f.write("this is a test")
14

>>> with open("morse.txt",encoding="morse") as f:
	f.read()
'this is a test'

>>> codext.decode("""
      =            
              X         
   :            
      x         
  n  
    r 
        y   
      Y            
              y        
     p    
         a       
 `          
            n            
          |    
  a          
o    
       h        
          `            
          g               
           o 
   z      """, "whitespace-after+before")
'CSC{not_so_invisible}'

>>> print(codext.encode("An example test string", "baudot-tape"))
***.**
   . *
***.* 
*  .  
   .* 
*  .* 
   . *
** .* 
***.**
** .**
   .* 
*  .  
* *. *
   .* 
* *.  
* *. *
*  .  
* *.  
* *. *
***.  
  *.* 
***.* 
 * .* 

• ascii85: classical ASCII85 (Python3 only)
• baseN: see base encodings (incl base32, 36, 45, 58, 62, 63, 64, 91, 100, 122)
• base-genericN: see base encodings ; supports any possible base

• baudot: supports CCITT-1, CCITT-2, EU/FR, ITA1, ITA2, MTK-2 (Python3 only), UK, ...
• baudot-spaced: variant of baudot ; groups of 5 bits are whitespace-separated
• baudot-tape: variant of baudot ; outputs a string that looks like a perforated tape
• bcd: Binary Coded Decimal, encodes characters from their (zero-left-padded) ordinals
• bcd-extended0: variant of bcd ; encodes characters from their (zero-left-padded) ordinals using prefix bits 0000
• bcd-extended1: variant of bcd ; encodes characters from their (zero-left-padded) ordinals using prefix bits 1111
• excess3: uses Excess-3 (aka Stibitz code) binary encoding to convert characters from their ordinals
• gray: aka reflected binary code
• manchester: XORes each bit of the input with 01
• manchester-inverted: variant of manchester ; XORes each bit of the input with 10
• rotateN: rotates characters by the specified number of bits (N belongs to [1, 7] ; Python 3 only)

• a1z26: keeps words whitespace-separated and uses a custom character separator
• cases: set of case-related encodings (including camel-, kebab-, lower-, pascal-, upper-, snake- and swap-case, slugify, capitalize, title)
• dummy: set of simple encodings (including reverse and word-reverse)
• octal: dummy octal conversion (converts to 3-digits groups)
• octal-spaced: variant of octal ; dummy octal conversion, handling whitespace separators
• ordinal: dummy character ordinals conversion (converts to 3-digits groups)
• ordinal-spaced: variant of ordinal ; dummy character ordinals conversion, handling whitespace separators

• gzip: standard Gzip compression/decompression
• lz77: compresses the given data with the algorithm of Lempel and Ziv of 1977
• lz78: compresses the given data with the algorithm of Lempel and Ziv of 1978
• pkzip_deflate: standard Zip-deflate compression/decompression
• pkzip_bzip2: standard BZip2 compression/decompression
• pkzip_lzma: standard LZMA compression/decompression

• affine: aka Affine Cipher
• atbash: aka Atbash Cipher
• bacon: aka Baconian Cipher
• barbie-N: aka Barbie Typewriter (N belongs to [1, 4])
• citrix: aka Citrix CTX1 passord encoding
• rotN: aka Caesar cipher (N belongs to [1,25])
• scytaleN: encrypts using the number of letters on the rod (N belongs to [1,[)
• shiftN: shift ordinals (N belongs to [1,255])
• xorN: XOR with a single byte (N belongs to [1,255])

• braille: well-known braille language (Python 3 only)
• ipsum: aka lorem ipsum
• leetspeak: based on minimalistic elite speaking rules
• morse: uses whitespace as a separator
• navajo: only handles letters (not full words from the Navajo dictionary)
• radio: aka NATO or radio phonetic alphabet
• southpark: converts letters to Kenny's language from Southpark (whitespace is also handled)
• southpark-icase: case insensitive variant of southpark
• tomtom: similar to morse, using slashes and backslashes

• dna: implements the 8 rules of DNA sequences (N belongs to [1,8])
• html: implements entities according to this reference
• letter-indices: encodes consonants and/or vowels with their corresponding indices
• markdown: unidirectional encoding from Markdown to HTML
• url: aka URL encoding

• klopf: aka Klopf code ; Polybius square with trivial alphabetical distribution
• resistor: aka resistor color codes
• sms: also called T9 code ; uses "-" as a separator for encoding, "-" or "_" or whitespace for decoding
• whitespace: replaces bits with whitespaces and tabs
• whitespace_after_before: variant of whitespace ; encodes characters as new characters with whitespaces before and after according to an equation described in the codec name (e.g. "whitespace+2*after-3*before")