Python - is it possible to use lambda in print with format (f or .format)?

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I searched for lambda and print and I didn’t find anything I imagined, I mean, it’s possible to do something like this:

mil = num//1000
print(f'O número tem {mil} {lambda milhar if (mil == 1) else milhares}')

or

print('O número tem {} {}'. format(mil, lambda milhar if (mil == 1) else milhares)

Thank you.

python lambda-expressions

2 answers

1

What you need in this case is not lambda, but use ternary operator. Follow an example:

num = 1200
mil = int(num/1000)
print("o numero tem {} {}".format(mil, "milhar" if mil == 1 else "milhares"))

  • Renan, perfect solved the problem of my code, in fact completely forgot the ternary. However, is the question, print format and lambda work together? I haven’t found an example yet, maybe I can’t. Thank you very much.

1


As already mentioned by Renan, the problem can be solved easier through the use of the ternary operator, however, it is possible to add the lambda along with the print.

num = 3000
mil = num//1000

# Utilizando lambda
print(f'O número tem {mil} {(lambda : "milhar" if mil == 1 else "milhares")()}')

# Utilizando apenas operador ternário
print(f'O número tem {mil} {"milhar" if mil == 1 else "milhares"}')

The lambda ultimately returns an expression, so it needs to be called (call) to return the value.

  • 1

    Camilo, thank you very much. Believe me, I had mounted this lambda that you created, but without both () at the end, because I had not seen them in the lambda examples that I found around. Now it became clear the character of the lambda 'an expression', should be called. It worked perfect, as you already knew. Thanks.

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