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luca72 <lucabe...@libero.it> writes: > i'm using pyscard I don't know what that is; can you give a link to what you're referring to? > and for send a command he need a list like this: > > cmd = [0xdd,0xff, etc] Is that Python code? If it is, I've already demonstrated that ‘0xDD’ in Python code *is* ‘221’. They're different representations that compile to exactly the same object. > the problem is that i get a text > like dd > and i need to trasform it in 0xdd for the list Right, which you can do by creating an integer as you've already done: >>> foo = 'DD' >>> int(foo, 16) 221 because that *is* the number ‘0xDD’: >>> int(foo, 16) == 0xDD True > and if i use hex i have a sting that is not what i need So don't do that; use the integer. -- \ “If you ever reach total enlightenment while you're drinking a | `\ beer, I bet it makes beer shoot out your nose.” —Jack Handey | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list