Integer as raw hex string?

[Roy Smith]

I have an integer that I want to encode as a hex string, but I don't
want "0x" at the beginning, nor do I want "L" at the end if it happened
to be a long. The result needs to be something I can pass to int(h, 16)
to get back my original integer.

The brute force way works:

h = hex(i)
assert h.startswith('0x')
h = h[2:]
if h.endswith('L'):
h = h[:-1]

but I'm wondering if there's some built-in call which gives me what I
want directly. Python 2.7.

 

[Tim Chase]

I have an integer that I want to encode as a hex string, but I don't
want "0x" at the beginning, nor do I want "L" at the end if it happened
to be a long. The result needs to be something I can pass to int(h, 16)
to get back my original integer.

The brute force way works:

h = hex(i)
assert h.startswith('0x')
h = h[2:]
if h.endswith('L'):
h = h[:-1]

but I'm wondering if there's some built-in call which gives me what I
want directly. Python 2.7.

Would something like

h = "%08x" % i

or

h = "%x" % i

work for you?

-tkc

 

[Roy Smith]

I have an integer that I want to encode as a hex string, but I don't
want "0x" at the beginning, nor do I want "L" at the end if it happened
to be a long. The result needs to be something I can pass to int(h, 16)
to get back my original integer.

The brute force way works:

h = hex(i)
assert h.startswith('0x')
h = h[2:]
if h.endswith('L'):
h = h[:-1]

but I'm wondering if there's some built-in call which gives me what I
want directly. Python 2.7.

Would something like

h = "%08x" % i

or

h = "%x" % i

work for you?

Duh. Of course. Thanks.

 

[MRAB]

I have an integer that I want to encode as a hex string, but I don't
want "0x" at the beginning, nor do I want "L" at the end if it happened
to be a long. The result needs to be something I can pass to int(h, 16)
to get back my original integer.

The brute force way works:

h = hex(i)
assert h.startswith('0x')
h = h[2:]
if h.endswith('L'):
h = h[:-1]

but I'm wondering if there's some built-in call which gives me what I
want directly. Python 2.7.

Would something like

h = "%08x" % i

or

h = "%x" % i

work for you?

Or:

h = "{:x}".format(i)