def calculation(values):
x, y, z = values.split()

x = float(x)
z = float(z)

if y == "+":
   return x+z
elif y == "-":
   return x-z
elif y == "*":
   return x*z
elif y == '/':
   return x/z

values = input(“Enter mathematical values: “)
print(calculation(values))

I tried to put split(“”),split( ),split(” “) also putting a space for each variable ,I had expected that the arithmatic values would be assigned to x,z and y will hold the operator.But it is contuniousing showing the same error shown in the image.screenshot of the error