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Asked: 2026-05-27T23:08:42+00:00

Objective: Convert binary to string Example: 0111010001100101011100110111010001100011011011110110010001100101 -> testCode (without space) I use a

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Objective: Convert binary to string

Example: 0111010001100101011100110111010001100011011011110110010001100101 -> testCode (without space)

I use a dictionary and my function, i search a better way and more efficient

from textwrap import wrap

DICO = {'\x00': '00', '\x04': '0100', '\x08': '01000', '\x0c': '01100', 
'\x10': '010000', '\x14': '010100', '\x18': '011000', '\x1c': '011100',
' ': '0100000', '$': '0100100', '(': '0101000', ',': '0101100', '0': '0110000',
'4': '0110100', '8': '0111000', '<': '0111100', '@': '01000000',
'D': '01000100', 'H': '01001000', 'L': '01001100', 'P': '01010000',
'T': '01010100', 'X': '01011000', '\\': '01011100', '`': '01100000',
'd': '01100100', 'h': '01101000', 'l': '01101100', 'p': '01110000',
't': '01110100', 'x': '01111000', '|': '01111100', '\x03': '011',
'\x07': '0111', '\x0b': '01011', '\x0f': '01111', '\x13': '010011',
'\x17': '010111', '\x1b': '011011', '\x1f': '011111', '#': '0100011',
"'": '0100111', '+': '0101011', '/': '0101111', '3': '0110011', '7': '0110111',
';': '0111011', '?': '0111111', 'C': '01000011', 'G': '01000111',
'K': '01001011', 'O': '01001111', 'S': '01010011', 'W': '01010111',
'[': '01011011', '_': '01011111', 'c': '01100011', 'g': '01100111',
'k': '01101011', 'o': '01101111', 's': '01110011', 'w': '01110111',
'{': '01111011', '\x7f': '01111111', '\x02': '010', '\x06': '0110',
'\n': '01010', '\x0e': '01110', '\x12': '010010', '\x16': '010110',
'\x1a': '011010', '\x1e': '011110', '"': '0100010', '&': '0100110',
'*': '0101010', '.': '0101110', '2': '0110010', '6': '0110110', ':': '0111010',
'>': '0111110', 'B': '01000010', 'F': '01000110', 'J': '01001010',
'N': '01001110', 'R': '01010010', 'V': '01010110', 'Z': '01011010',
'^': '01011110', 'b': '01100010', 'f': '01100110', 'j': '01101010',
'n': '01101110', 'r': '01110010', 'v': '01110110', 'z': '01111010',
'~': '01111110', '\x01': '01', '\x05': '0101', '\t': '01001', '\r': '01101',
'\x11': '010001', '\x15': '010101', '\x19': '011001', '\x1d': '011101',
'!': '0100001', '%': '0100101', ')': '0101001', '-': '0101101',
'1': '0110001', '5': '0110101', '9': '0111001', '=': '0111101',
'A': '01000001', 'E': '01000101', 'I': '01001001', 'M': '01001101',
'Q': '01010001', 'U': '01010101', 'Y': '01011001', ']': '01011101',
'a': '01100001', 'e': '01100101', 'i': '01101001', 'm': '01101101',
'q': '01110001', 'u': '01110101', 'y': '01111001', '}': '01111101'}

def decrypt(binary):
    """Function to convert binary into string"""
    binary = wrap(binary, 8)
    ch = ''
    for b in binary:
        for i, j in DICO.items():
            if j == b:
                ch += i
    return ch

thank by advance,

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1 Answer

  1. Editorial Team

    did you try

    def decrypt(binary):
    """Function to convert binary into string"""
    return ''.join(( chr(int(p, 2)) for p in grouper(8,binary,'') ))

    where grouper is taken from here http://docs.python.org/library/itertools.html#recipes

    or

    def decrypt2(binary):
    """Function to convert binary into string"""
    return ''.join(( DICO_INVERTED[p] for p in grouper(8,binary,'') ))

    that avoids to create temporary list

    EDIT
    as I was choisen to be the “right” answer I have to confess that I used the other answers. The point is here not to use generator list but generator expression and iterators

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