Python common decimal, 16 binary, String, byte-string conversion between (long-term update posts)

When parsing a protocol, you will always encounter a variety of data conversion problems, from binary to Decimal, from byte string to integer, etc.

Not much nonsense on that directly on the example

Binary conversions between integers:

• 10-in-turn 16-in: Hex (==>) 0x10
• 16-in-turn 10-in: Int (' 0x10 ', +) ==> 16

Also similar to the OCT (), Bin ()


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String to Integer:

• 10 binary string: Int (' ten ') ==> 10
• 16 binary string: Int (' ten ', +) ==> 16
• 16 binary string: Int (' 0x10 ', +) ==> 16

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byte string to Integer:

• Escaped to short integer: Struct.unpack ('
• Escaped as Long integer: Struct.unpack (' <l ', bytes (b ' \x01\x00\x00\x00 ')) ==> (1,)

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Integer to byte string:

• Convert to two bytes: Struct.pack ('
• Convert to four bytes: Struct.pack (' <ll ', up) ==> B ' \x01\x00\x00\x00\x02\x00\x00\x00 '

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String-To-byte string:

• String encoded as bytecode: ' 12abc '. Encode (' ASCII ') ==> B ' 12abc '
• Array of numbers or characters: bytes ([1 '), Ord (' 2 ')]) ==> B ' \x01\x0212 '
• 16 binary string: bytes (). Fromhex (' 010210 ') ==> B ' \x01\x02\x10 '
• 16 Binary strings: bytes (map (ord, ' \x01\x02\x31\x32 ')) ==> B ' \x01\x0212 '
• 16 binary arrays: bytes ([0x01,0x02,0x31,0x32]) ==> B ' \x01\x0212 '

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BYTE string:

• Byte code decoded to a string: bytes (b ' \x31\x32\x61\x62 '). Decode (' ASCII ') ==> 12ab
• byte string to 16 binary representation, entrained ascii:str (bytes (b ' \x01\x0212 ')) [2:-1] ==> \x01\x0212
• byte string to 16 binary representation, fixed two characters: Str (binascii.b2a_hex (b ' \x01\x0212 ')) [2:-1] ==> 01023132
• byte string to 16 binary array: [Hex (x) for x in bytes (b ' \x01\x0212 ')] ==> [' 0x1 ', ' 0x2 ', ' 0x31 ', ' 0x32 ']

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Python Source for testing

' Created on August 21, 2014 @author:lenovo ' ' Import binasciiimport structdef example (Express, Result=none): if result = = N One:result = eval (Express) print (Express, ' ==> ', result) if __name__ = = ' __main__ ': print (' binary conversion between integers ') : ') print ("10 binary to 16", end= ': '); Example ("Hex ()") print ("16 to 10", end= ': '), Example ("Int (' 0x10 ')") print ("similar to Oct (), Bin ()") print (' \ n-------------------\ n ') print (' String to Integer: ') print ("10 binary string", end= ":"); Exampl E ("Int (')") print ("16 binary string", end= ":"), Example ("Int (') ',") ") print (" 16 binary string ", end=": "); example (" int "(' 0x10 ', 1 6) print (' \ n-------------------\ n ') print (' byte string-to-integer: ') print ("Escaped to short integer", end= ":"); Example (r "struct.un Pack (' 
The above principles are relatively simple, look at the understanding. Here's just a way to get a better, simpler approach, welcome.
Python common decimal, 16 binary, String, byte-string conversion between (long-term update posts)