Python - convert from hex integer to hex string

Question

Is there a reasonably simple way to convert from a hex integer to a hex string in python? For example, I have 0xa1b2c3 and I want "0xa1b2c3". If I use str(), it automatically gets converted to base 10, and then I can't convert it back because it's a string at that point.

Sukrit Kalra · Accepted Answer · 2013-07-05 19:52:54Z

5

Why not just do hex()?

>>> testNum = 0xa1b2c3
>>> hex(testNum)
    '0xa1b2c3'
>>> test = hex(testNum)
>>> isinstance(test, str)
    True

hex returns a string representation. See help(hex)

hex(...)
    hex(number) -> string

    Return the hexadecimal representation of an integer or long integer.

edited Jul 5, 2013 at 19:52

answered Jul 5, 2013 at 19:47

Sukrit Kalra

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Comments

Ashwini Chaudhary · Accepted Answer · 2013-07-05 19:52:05Z

3

Use hex:

>>> x = 0xa1b2c3
>>> hex(x)
'0xa1b2c3'

or string formatting:

>>> "{:#x}".format(x)
'0xa1b2c3'

or format:

>>> format(x, '#x')
'0xa1b2c3'

edited Jul 5, 2013 at 19:52

answered Jul 5, 2013 at 19:46

Ashwini Chaudhary

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2 Comments

Martijn Pieters Over a year ago

Use the format() function instead; format(x, '#x'). No need to have the overhead of the string format parsing too.

Morgan Barksdale Over a year ago

Thanks. It seems like you both answered the same thing at the same time, so I'm accepting his answer because he has a lot less reputation points than you. Cheers

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