Calculator B
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x = '1 + 2'
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