text = 'y@ld@ ^^08@r@k'   #@->a    ^^->m    8->b

print(text.replace('@','a').replace('^^', 'm').replace('8', 'b'))

ff = "y@ld@ ^^08@r@k"
print(ff.replace("@", "a" ).replace("^^", "m").replace("8", "b"))