Matheus Bratfisch

Category: python

Oct 19 2009

Change numeric base using Python

Hello,

How to change the numeric base of a number? This is a implementation in Python.

def convert(decimal,newBase,str,letters):

        if decimal >= newBase:

                x = decimal % newBase

                y = decimal / newBase   

                str = letters[x] + str

                if y < newBase:

                        str = letters[y] + str

                return convert(y,newBase,str,letters)   

        else:

                if len(str) == 0:

                        str = letters[decimal] + str

                return str

let = "0123456789ABCDEF"

print convert(17,16,"",let)

The variable let means what values used in the base. For an example if you want binary you should replace with 01.

Matheus

Aprendendo, python | Matheus (X-warrior) Bratfisch | Comments (0)

Sep 02 2009

Connect to SSH using Python

Good Night,

If you want to execute commands in console using python you can use the pexpect library. You can get it in http://sourceforge.net/projects/pexpect/. To install it use:

$ sudo python setup.py install

After install it, you can have fun. I did a small script to test it.

import pexpect
class SSH():

def connect(self):

x = True

sshConnection = pexpect.spawn(‘ssh -l matheus -p 22 192.168.0.254′)

sshConnection.expect(‘matheus@192.168.0.254\’s password:’)

sshConnection.sendline(‘password’)

while True:

print sshConnection.readline();

if x is True:

sshConnection.sendline(‘uptime’)

x = False

sshConnection.readline();
s = SSH()

s.connect()