How to get 'od' run?

[Michael Torrie]

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/