Python 3x - Error: "Object" is no defined in list

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I am learning to program in python and I have this following problem in an exercise. When running the code happens this following error: 

vogal = (a,e,i,o,u) 
NameError: name 'a' is not defined.

I have tried to solve by typing some other codes, writing the same code in other ways and even then I continue with the error.

    vogal = [a,e,i,o,u]

    letra = input("Digite uma letra: ")

    if letra in vogal:

    print('esta letra é uma vogal')

else:

print('esta letra não é uma vogal')
python python-3.x
  • 1

    If the intention was that a,e,i,o,u were strings, literal values, put them in quotes: vogal = ["a","e","i","o","u"]

  • Oops, it worked out, thank you very much, I hadn’t paid attention to this little detail. I ended up thinking it was a more complicated problem but no. Hugs

1 answer

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The right thing would be:

vogal = ('a','e','i','o','u')

The reason is that, in Python (and in general programming languages), when you want to use a string it must be typed in quotes.

Without using quotes the typed word will be understood as a variable, and there is no variable to stated in your code.

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