Filipe Teixeira wrote:
Hi.
I have to open a binary file from an old computer and recover the
information stored (or at least try to). I use:
f=open('file.bin','rb')
a=f.read()
f.close()
a in now a string full of hex representations in the form:
a[6]='\x14'
a[7]='\x20'
I would like to convert these hex representations to int, but this
(the most obvious way) doesn't seem to be working
q=a[6]
q
'\x14'
int(q,16)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: invalid literal for int():
How can I do this?
Thanks
As you say you are trying to recover information from the old computer
are you sure you want to convert the data to it's integer representation ?
What I mean is in this case the string will contain the actual data read
from the file, not a hex representation. It's just the python displays
this data as '\x14'. BTW - are you sure it's displaying '\x20' from your
data as this should be a space character i.e. " ".
In the python interpreter try this:
mydata=""
for i in range(256):
mydata+=chr(i)
>> mydata
This will show you the hex representation of the values in mydata that
it can't display however the string is not a string of "hex values" as
such, it contains the binary values 0-255.
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