In [1]:

    

s = 'one two one two one'


    

In [2]:

    

print(s.replace('one', 'two').replace('two', 'one'))


    

    




one one one one one

In [3]:

    

print(s.replace('one', 'X').replace('two', 'one').replace('X', 'two'))


    

    




two one two one two

In [4]:

    

def swap_str(s_org, s1, s2, temp='*q@w-e~r^'):
    return s_org.replace(s1, temp).replace(s2, s1).replace(temp, s2)


    

In [5]:

    

print(swap_str(s, 'one', 'two'))


    

    




two one two one two

In [6]:

    

print(s.replace('o', 't').replace('t', 'o'))


    

    




one owo one owo one

In [7]:

    

print(s.translate(str.maketrans({'o': 't', 't': 'o'})))


    

    




tne owt tne owt tne

In [8]:

    

print(s.translate(str.maketrans('ot', 'to')))


    

    




tne owt tne owt tne