# 10 examples of 'python int to binary' in Python

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``42def intlist_to_binary(intlist):43    '''Convert a list of integers to a binary string type'''44    return bytes(intlist)``
``53def to_binary(n, result=""):54    if n &lt; 2:55        return str(n) + result56    return to_binary(n/2, str(n%2) + result)``
``9def to_binary(x): return '' if x == 0 else to_binary(int(x / 256)) + chr(x % 256)``
``56def bin2int(N):57    58    L = int(len(str(N)))  #將輸入的二進位數字變成字串並數出他的長度59    A = 0                 #設定兩個變數，其中A是用來計算最後的答案，K是用來計算迴圈運行的次數以及作為2的指數60    K = 061    while L &gt; K :         #設定迴圈條件，當執行的次數等於輸入的二進位數字長度後，便不再執行迴圈62        r = int(N%10)     #設定一個變數r,使其成為當前二進位數最右邊的數的值63        A = A + (2**K)*r  #計算當前所得到的數的總和64        N = N/10          #將當前二進位數最右邊的數值去掉65        K = K + 1         #執行次數加166    67    str(A)                #將最後的答案轉換成字串形式68    return A``
``73def bytes_from_int(val):74    buf = []75    while val:76        val, remainder = divmod(val, 256)77        buf.append(remainder)7879    buf.reverse()80    return struct.pack('%sB' % len(buf), *buf)``
``36def frombin(v):37    """MSB to LSB binary form"""38    return int("".join(map(str, v)), 2 )``
``74def toBinary(number, zfill = 7):75    return list(str(bin(number))[2:].zfill(zfill))``
``226def _bytes_to_int(b):227    return int(codecs.encode(b, "hex"), 16)``
``111def binaryToLong(s):112    return pickle.decode_long(''.join(reversed(s)))``
``42def bytes_to_int(be_bytes):43    """ Interprets a big-endian sequence of bytes as an integer. """44    return int(hexlify(be_bytes), 16)``