Fix stupid errors in tools module

import os

import hashlib

import shutil

def md5sum(path):

    '''Compute md5 of a file'''

def cp(source, destination):

    '''Copy a source to destination. Take care of path type'''

    stype = path_type(source)

    dtype = path_type(destination)

    stype = get_path_type(source)

    dtype = get_path_type(destination)

    if stype == dtype == "file":

        shutil.copy(source, destination)

    elif stype == "file" and dtype == "":

        pass

        raise NotImplementedError

    else:

        raise NotImplementedError

def get_path_type(path):

    '''Return path type. This is usefull to know what king of path is given'''

        return "http"

    elif path.startswith("ssh://"):

        return "ssh"

    elif path.startswith("file://") or os.path.exists(path):

    elif path.startswith("file://") or path.startswith("/") or os.path.exists(path):

        return "file"

    elif Image.check_image_name(path):

        return "name"