Calculator
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statement = ['1', '/', ]
while (len(statement) >= 3 and len(statement) % 2):
x = statement[0]
y = statement[2]
op = statement[1]
try:
x = float(x)
y = float(y)
# print (x, op, y, 'is equal to:')
except ValueError:
print('ValueError')
break
if (op in ['+', '-', '*', '/']):
result = 0
if op == '+':
result = x + y
if op == '-':
result = x - y
if op == '*':
result = x * y
if op == '/':
if y == 0:
print('y cannot be zero!')
break
else:
result = x / y
del statement [:2]
statement [0] = result
if len(statement) == 1 :
print(result)
else:
print('Wrong operator !')
break
else:
if (len(statement) % 2 == 0) :
print('Incomplete')
Python
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