Calculator A
12345678910111213141516171819
x = input("Please input an expression")
y = x.split()
print(y)
a = float(y[0])
b = y[1]
c = float(y[2])
if (type(a) == int or type(a) == float) and (b in ['+','-','x','/']):
if (type(c) == int or type(c) == float):
if b=='+':
result = a + c
if b == '-':
result = a - c
if b == 'x':
result = a * c
if b == '/':
result = a/c
print(result)
else:
print("input error")
Python
INFO