How can I separate the calculator into 2 parts?

Question

I recommend using another compilator separately (like Spyder) to understand the error.
What I want to do is that when you enter one of the letters, only one formula is activated and nothing else
Since what happens is that they activate 2, help me?

https://code.sololearn.com/cHnm0kUow2Da/?ref=app

Answer 1

In line 6, you're saving the user input in a variable. Do the same in line 2.

Also, in line 2 you use the input() function to display a text. Why do you expect the same function to compare user input to a string in line 4?

Answer 2

https://code.sololearn.com/csIays1R0YMr/?ref=app

Answer 3

Compare line 2 and line 6. One is correct, the other one isn't. And the syntax of a comparison is "if x == y", not "if x(y)" (line 4).

Answer 4

hehehe
Thanks

Answer 5

??