binascii.unhexlify(hexstr) Return the binary data represented by the hexadecimal string hexstr. This function is the inverse of b2a_hex(). hexstr must contain an even number of hexadecimal digits (which can be upper or lower case), otherwise an Error exception is raised.

binascii.rledecode_hqx(data) Perform RLE-decompression on the data, as per the binhex4 standard. The algorithm uses 0x90 after a byte as a repeat indicator, followed by a count. A count of 0 specifies a byte value of 0x90. The routine returns the decompressed data, unless data input data ends in an orphaned repeat indicator, in which case the Incomplete exception is raised. Changed in version 3.2: Accept only bytestring or bytearray objects as input.

binascii.rlecode_hqx(data) Perform binhex4 style RLE-compression on data and return the result.

exception binascii.Incomplete Exception raised on incomplete data. These are usually not programming errors, but may be handled by reading a little more data and trying again.

binascii.hexlify(data) Return the hexadecimal representation of the binary data. Every byte of data is converted into the corresponding 2-digit hex representation. The returned bytes object is therefore twice as long as the length of data.

exception binascii.Error Exception raised on errors. These are usually programming errors.

binascii.crc_hqx(data, value) Compute the binhex4 crc value of data, starting with value as the initial crc, and return the result.

binascii.crc32(data[, value]) Compute CRC-32, the 32-bit checksum of data, starting with an initial CRC of value. The default initial CRC is zero. The algorithm is consistent with the ZIP file checksum. Since the algorithm is designed for use as a checksum algorithm, it is not suitable for use as a general hash algorithm. Use as follows: print(binascii.crc32(b"hello world")) # Or, in two pieces: crc = binascii.crc32(b"hello") crc = binascii.crc32(b" world", crc) print('crc32 = {:#010x}'.form

binascii.b2a_uu(data) Convert binary data to a line of ASCII characters, the return value is the converted line, including a newline char. The length of data should be at most 45.

binascii.b2a_qp(data, quotetabs=False, istext=True, header=False) Convert binary data to a line(s) of ASCII characters in quoted-printable encoding. The return value is the converted line(s). If the optional argument quotetabs is present and true, all tabs and spaces will be encoded. If the optional argument istext is present and true, newlines are not encoded but trailing whitespace will be encoded. If the optional argument header is present and true, spaces will be encoded as underscores p