I have a string that has both binary and string characters and I would like to convert it to binary first, then to hex.
The string is as below:
<81>^Q<81>"^Q^@^[)^G ^Q^A^S^A^V^@<83>^Cd<80><99>}^@N^@^@^A^@^@^@^@^@^@^@j
How do I go about converting this string in Python so that the output in hex format is similar to this below?
24208040901811001B12050809081223431235113245422F0A23000000000000000000001F
You can use ord and hex like this :
>>> s = 'some string'
>>> hex_chars = map(hex,map(ord,s))
>>> print hex_chars
['0x73', '0x6f', '0x6d', '0x65', '0x20', '0x73', '0x74', '0x72', '0x69', '0x6e', '0x67']
>>> hex_string = "".join(c[2:4] for c in hex_chars)
>>> print hex_string
736f6d6520737472696e67
>>>
Or use the builtin encoding :
>>> s = 'some string'
>>> print s.encode('hex_codec')
736f6d6520737472696e67
>>>
hex and ord does not work reliably. Use "%2.2x".__mod__ instead of hex and you can also avoid the c[2:4]. As a result it would look like: "".join(map("%2.2x".__mod__, map(ord, s))). The encoding version is of course better. :-)>>> import binascii
>>> s = '2F'
>>> hex_str = binascii.b2a_hex(s)
>>> hex_str
>>> '3246'
OR
>>>import binascii
>>> hex_str = binascii.hexlify(s)
>>> hex_str
>>> '3246'
>>>
Faster solution see:
from timeit import Timer
import os
import binascii
def testSpeed(statement, setup = 'pass'):
print '%s' % statement
print '%s' % Timer(statement, setup).timeit()
setup = """
import os
value = os.urandom(32)
"""
# winner
statement = """
import binascii
binascii.hexlify(value)
"""
testSpeed(statement, setup)
# loser
statement = """
import binascii
value.encode('hex_codec')
"""
testSpeed(statement, setup)
Results:
import binascii
binascii.hexlify(value)
2.18547999816
value.encode('hex_codec')
2.91231595077
print(repr(your_string)))and copy/paste the result into your question. Tell us what version of Python and what platform.