How to convert a value to float and int in python?

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Hello, I am trying to convert a received value from a graphical interface to int or float, to make a software that solves the second degree equations.

layout = [  [sg.Text('Termo A:'), sg.InputText()], #os valores colocados aqui devem ser convertidos para float ou int
        [sg.Text('Termo B:'), sg.InputText()],
        [sg.Text('Termo C:'), sg.InputText()],
        [sg.Ok(), sg.Cancel()]]

I have tried several things to convert these values, but none worked.

elif event in (sg.ok, 'Ok'):
      valor_float = float(values)
      print (type(valor_float[0]))

In the above example of the following error:

Typeerror: float() argument must be a string or a number, not 'Dict'

I am using the Pysimplegui library. Thanks in advance.

python type-conversion interface
  • 2

    But it won’t work anyway. The value you are trying to convert, according to the error message, is a dictionary. Probably the target value of this conversion should be inside this dictionary.

  • Hello Elisha, it is important [Dit] your question and explain objectively and punctually the difficulty found, accompanied by a [mcve] of the problem. To better enjoy the site, understand and avoid closures is worth reading the Stack Overflow Survival Guide in English. So we can help. Thank you for understanding.

2 answers

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valor_float = float(valor)
valor_int = int(valor)

  • Hello, I had already tried this, it appears like this "Typeerror: float() argument must be a string or a number, not 'Dict", I appreciate the comment

  • @Eliseuperes this error appears because the float and the int accept only numbers or strings for conversion. They do not accept a dictionary or any other object.

  • 1

    So why can’t you even accept - what would be the point of converting a dictionary, which is a map of names to values, to a number? In the question is not displayed where comes "values" or what it is - this error message says it is a dictionary You need to know what inside the dictionary you want to turn into float or integer, and make the equivalent call by passing this value.

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Your specific error you are trying to convert a dictionary to a float.

In this case you need to access the value of your dictionary so you can then convert its values.

For example:

dicionario = { 'Termo A:':  '1234', 'Termo B:': '2.4','Termo C': '0.66'}

for x in dicionario.values():
    valor_float = float(x)
    print (type(valor_float))

values() reads returns all values from your dictionary, so you need to use a loop to print each value, you can also access the specified index.

valor_float = float(dicionario['Termo B:'])
print (type(valor_float))
print(dicionario['Termo B:'])

You can still access your key/value

for chave, valor in dicionario.items():
    if chave == 'Termo B:':
        valor_float = float(dicionario['Termo B:'])
        print (type(valor_float))
        print(f'{chave} Seu valor é {valor}')

To convert to int just use the same logic and change the float to int.

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