>>> replace each letter in 'ABCDEF' with the corresponding NATO Phonetic alphabet code

- elapsed 1.125 seconds -
codes = {'A': 'Alfa', 'B': 'Bravo', 'C': 'Charlie', 'D': 'Delta', 'E': 'Echo',
    'F': 'Foxtrot'}

def replace_each(text, codes):
    for ch, code in list(codes.items()):
        text = text.replace(ch, code)
return text
print(replace_each('ABCDEF', codes))