How to convert a hex string to hex number

python string python-2.7 hex
RATHI picture RATHI · Feb 19, 2014 · Viewed 227k times · Source

I want to convert a hex string (ex: 0xAD4) to hex number, then to add 0x200 to that number and again want to print that number in form of 0x as a string.

i tried for the first step:

str(int(str(item[1][:-2]),16))

but the value that is getting printed is a decimal string not a hex formatted string (in 0x format) ( i want to print the final result in form of 0x)

  • [:-2] to remove the last 00 from that number
  • item[1] is containing hex number in form of 0x

Answer

Bach picture Bach · Feb 19, 2014

Try this:

hex_str = "0xAD4"
hex_int = int(hex_str, 16)
new_int = hex_int + 0x200
print hex(new_int)

If you don't like the 0x in the beginning, replace the last line with

print hex(new_int)[2:]

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