Convert from digit number to hex string with zero leading digit

Asked Sep 19 '16 at 08:34

Active Sep 19 '16 at 08:36

Viewed 185 times

Is there a built-in Python function that convert from digit number to hex string with zero leading digit?

I wrote her:

def convert_to_hex_string(number):
    number = format(number, 'x')
    if len(number) == 1:
        number = '0' + number
    return number

>>> convert_to_hex_string(7)
'07'
>>> convert_to_hex_string(10)
'0a'
>>> convert_to_hex_string(11)
'0b'
>>> convert_to_hex_string(666)
'29a'

but I was wondering could already have a built-in in Python (analogue .toString("X2") in C#)

edited Sep 19 '16 at 08:36

Delgan

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asked Sep 19 '16 at 08:34

Andrei

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Why tagged c#?? – Imad Sep 19 '16 at 08:35
If you wouldn't do it directly on format() using '02x' then use len(number)%2 == 1, not len(number) == 1. – Cetin Basoz Sep 19 '16 at 08:38
try '{0:02x}'.format( number ) – Humbalan Sep 19 '16 at 08:39
@lmad I search for analogue function in C# - .toString("X2") – Andrei Sep 19 '16 at 08:40
See the duplicate target for multiple methods, but as you've already used `format`, just `format(number, '02x')` will do. – Ilja Everilä Sep 19 '16 at 08:41
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I take my word back. format with 02x doesn't work at all. (and this question is not a duplicate of the mentioned post). Anyway, just use len(number)%2 == 1. It works in C# with ToString("X2") but not in python. – Cetin Basoz Sep 19 '16 at 09:16
@cetin-basoz can you explain in what case, 02x not work? – Andrei Sep 19 '16 at 09:19
If someone didn't lock replies to this question I had the explanation with explicit code already :( Anyway, with format(666, '02x') or print('{0:02x}', format(666)) you just get 29a, not 029a. – Cetin Basoz Sep 19 '16 at 10:36

Convert from digit number to hex string with zero leading digit

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