On 22/02/11 13:46, tee chwee liong wrote:
hi,
>>> bin(0xff0)
'111111110000'
>>> bin(0xff1)
'111111110001'
>>> a=bin(0xff0)+bin(0xff1)
>>> a
'111111110000111111110001'
>>> b=0xff0
>>> c=0xff1
>>> d=b+c
>>> d
8161
>>> bin(d)
'1111111100001'
question:
1) why is it that a and d values are different? i'm using Python 2.5.
2) how to convert hex to bin in Python 2.5?
thanks
tcl
Hi,
1) As you can see bin() returns a binary representation of the number
you pass to it as a string. Thus when you do a=bin(0xff0)+bin(0xff1) you
are concatenating the two strings returned by bin. For d you are
carrying out the mathematical addition operation on the two numbers
before converting it to binary.
2) You've already done that several times, just use bin()
HTH,
Adam.
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