Menu
Does anyone know how to get a chr to hex conversion where the output is always two digits?
for example, if my conversion yields 0x1, I need to convert that to 0x01, since I am concatenating a long hex string.
The code that I am using is:
hexStr += hex(ord(byteStr[i]))[2:] 
448
To convert a hexadecimal string to a numberUse the ToInt32(String, Int32) method to convert the number expressed in base-16 to an integer. The first argument of the ToInt32(String, Int32) method is the string to convert. The second argument describes what base the number is expressed in; hexadecimal is base 16.
The format for coding a hexadecimal string mask is: X'yy...yy' The value yy represents any pair of hexadecimal digits that constitute a byte (8 bits). Each bit must be 1 (test bit) or 0 (ignore bit). You can specify up to 256 pairs of hexadecimal digits.
Python hex() function is used to convert an integer to a lowercase hexadecimal string prefixed with “0x”. We can also pass an object to hex() function, in that case the object must have __index__() function defined that returns integer. The input integer argument can be in any base such as binary, octal etc.
You can use string formatting for this purpose:
>>> "0x{:02x}".format(13) '0x0d' >>> "0x{:02x}".format(131) '0x83' Edit: Your code suggests that you are trying to convert a string to a hexstring representation. There is a much easier way to do this (Python2.x):
>>> "abcd".encode("hex") '61626364' An alternative (that also works in Python 3.x) is the function binascii.hexlify().
111
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
