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Message: [QUOTE="Praveena P, post: 3627188"] 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 f.read(2) 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? Thanks guys! Praveena [/QUOTE]