Re: How to get 'od' run?
On 11/11/2015 08:21 PM, Michael Torrie wrote:
> On 11/11/2015 08:04 PM, fl wrote:
>> Hi,
>>
>> I am learning python. I see a previous post has such code:
>>
>>
>>
>>
>>
>>>>> data = '"binääridataa"\n'.encode('utf-8')
>>>>> f = open('roska.txt', 'wb')
>>>>> f.write(data)
>>17
>>>>> f.close()
>>
>> The .encode methods produced a bytestring, which Python likes to display
>> as ASCII characters where it can and in hexadecimal where it cannot:
>>
>>>>> data
>>b'"bin\xc3\xa4\xc3\xa4ridataa"\n'
>>
>> An "octal dump" in characters (where ASCII, otherwise apparently octal)
>> and the corresponding hexadecimal shows that it is, indeed, these bytes
>> that ended up in the file:
>>
>> $ od -t cx1 roska.txt
> ^^^
> This is most likely a bash prompt. Therefore "od" is a program on your
> computer. Nothing to do with Python at all.
>
> To get Python to display \x## hex codes for non-ascii characters in a
> byte stream, you can print out the repr() of the byte string. For example:
>
> print (repr(my_unicode_string.encode('utf-8')))
Also there are numerous recipes for doing standard hex dumps out there.
For example,
http://code.activestate.com/recipes/142812-hex-dumper/
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Re: How to get 'od' run?
On 11/11/2015 08:04 PM, fl wrote:
> Hi,
>
> I am learning python. I see a previous post has such code:
>
>
>
>
>
>>>> data = '"binääridataa"\n'.encode('utf-8')
>>>> f = open('roska.txt', 'wb')
>>>> f.write(data)
>17
>>>> f.close()
>
> The .encode methods produced a bytestring, which Python likes to display
> as ASCII characters where it can and in hexadecimal where it cannot:
>
>>>> data
>b'"bin\xc3\xa4\xc3\xa4ridataa"\n'
>
> An "octal dump" in characters (where ASCII, otherwise apparently octal)
> and the corresponding hexadecimal shows that it is, indeed, these bytes
> that ended up in the file:
>
> $ od -t cx1 roska.txt
^^^
This is most likely a bash prompt. Therefore "od" is a program on your
computer. Nothing to do with Python at all.
To get Python to display \x## hex codes for non-ascii characters in a
byte stream, you can print out the repr() of the byte string. For example:
print (repr(my_unicode_string.encode('utf-8')))
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How to get 'od' run?
Hi,
I am learning python. I see a previous post has such code:
>>> data = '"binääridataa"\n'.encode('utf-8')
>>> f = open('roska.txt', 'wb')
>>> f.write(data)
17
>>> f.close()
The .encode methods produced a bytestring, which Python likes to display
as ASCII characters where it can and in hexadecimal where it cannot:
>>> data
b'"bin\xc3\xa4\xc3\xa4ridataa"\n'
An "octal dump" in characters (where ASCII, otherwise apparently octal)
and the corresponding hexadecimal shows that it is, indeed, these bytes
that ended up in the file:
$ od -t cx1 roska.txt
When I run the above line with python 2.7, it does not recognize 'od'.
Is it from a package? Or some internal function?
Thanks,
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