Hola a todos, al utilizar .upper me devuelve lo siguiente, si no lo utilizo me devuelve lo esperado. Escribe una frase: Hola mundo <bu...

Hola a todos, al utilizar .upper me devuelve lo siguiente, si no lo utilizo me devuelve lo esperado.

Escribe una frase: Hola mundo

<built-in method upper of str object at 0x7fe72e8456f0>

<built-in method upper of str object at 0x7fe72ced8c30>

<built-in method upper of str object at 0x7fe72e8c1eb0>

<built-in method upper of str object at 0x7fe72e8e9f70>

<built-in method upper of str object at 0x7fe72ea2bcb0>

<built-in method upper of str object at 0x7fe72ce7ac70>

<built-in method upper of str object at 0x7fe72cedd370>

<built-in method upper of str object at 0x7fe72e8490b0>

<built-in method upper of str object at 0x7fe72ced8af0>

<built-in method upper of str object at 0x7fe72ced8c30>