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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def cmd_loadfile(args):
    '''callback from menu to load a log file'''
    if len(args) != 1:
        fileargs = " ".join(args)
    else:
        fileargs = args[0]
    if not os.path.exists(fileargs):
        print("Error loading file ", fileargs);
        return
    if os.name == 'nt':
        #convert slashes in Windows
        fileargs = fileargs.replace("\\", "/")
    loadfile(fileargs.strip('"'))