BEGINNER: My calculator doesnt work

[buran]

@perfingo is not very explicit enough that eval() could be dangerous, so be careful when using it

as an alternative to avoid using huge if/elif/else block is to use operator module

from operator import add, mul, sub, truediv 
ops = {'+':add, 'plus':add, '-':sub, 'minus':sub,
       "multiplication":mul, "*":mul, "/":truediv, "divide":truediv}

num1 = float(input ("Insert number: "))
operator = input ("What operation do you want to do: ").lower()
num2 = float(input ("And the second number: "))

try:
    print(f'result: {ops[operator](num1, num2)}')
except KeyError:
    print("Sorry, operator not identified, please try again")

output(multiple runs)

Output:
Insert number: 5
What operation do you want to do: +
And the second number: 4
result: 9.0

Output:
Insert number: 5
What operation do you want to do: minus
And the second number: 3
result: 2.0

Output:
Insert number: 4
What operation do you want to do: %
And the second number: 3
Sorry, operator not identified, please try again