String to hexadecimal conversion

Steve Holden steve at
Fri Sep 12 14:36:37 CEST 2008

Praveena P wrote:
> Hi folks,
> I am new to Python... so am not too sure about how the type conversion
> works.
> I have to read a file that contains hexadecimal data and use the data
> further to do some arithmetic calculations.
> A sample of the input is : 00000000000020E0000032F800000000400022005E
> The problem I am facing is this:
> I am using to read a byte at a time, but the data that is
> read is a string rather than a number. So it kind of hampers any
> arithmetic operations I perform on this data...
> Could you please suggest some method I could use for this?

Generally speaking, reading a file 2 bytes at a time i going to be
inefficient and untidy.

Does this help?

>>> int("00000000000020E0000032F800000000400022005E", 16)

Or have I misunderstood your intention?

Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC    

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