[zschneiderz]

Hello all

I'm currently working on a program that will read in the byte of a file and hash it. The program will write the hash values back to the same area or memory the file is stored. It is supposed to be a wiping program.

Some things that I would like to ask is :
- any functions/methods available to read the byte of a file?
- is it possible to use the OS read/write function for my program?

All help are greatly appreciated.

[pys60tr]

use read object
same example
#create and write
f=open('e:\\a.txt','w')
f.write('hello world')
f.close()

f=open('e:\\a.txt','r')
a=f.read(5)#reading 5 bytes
print a
>>>hello
f.close()

[Rafael T.]

Originally Posted by pys60tr

use read object
same example
#create and write
f=open('e:\\a.txt','w')
f.write('hello world')
f.close()

f=open('e:\\a.txt','r')
a=f.read(5)#reading 5 bytes
print a
>>>hello
f.close()

Hi pys60tr,

Thanks for posting the example!

Although, next time please use the code tag for posting codes



BR,

Rafael.

[pys60tr]

I writing reply phone
thank you for warning

[gaba88]

Originally Posted by zschneiderz

Hello all

I'm currently working on a program that will read in the byte of a file and hash it. The program will write the hash values back to the same area or memory the file is stored. It is supposed to be a wiping program.

Some things that I would like to ask is :
- any functions/methods available to read the byte of a file?
- is it possible to use the OS read/write function for my program?

All help are greatly appreciated.

hi zschneiderz

you can also have a look at this link for more details and there are lots of examples at the wiki about file manipulations try to have a good search.

Enjoy Pythoning
Gaba88

[zschneiderz]

thanks for the advice and the link

Another question i would like to ask is that if there is more crypto methods available on python. Cos i noticed there only 3 types available (MD5 and SHA). Possible to find standards like AES or DES?