def add():
expression = text = request.form['expression']
p = Parser(expression)
value = p.getValue()
now = datetime.utcnow()
db.session.add(Expression(text=expression, value=value, now=now))
db.session.commit()
return redirect(url_for('index'))
def main():
print('Hello!')
while True:
source = input('>>')
source = source.replace(' ', '')
source = source.strip()
if source == 'q':
print('Goodbye!')
break
elif len(source) == 0:
continue
ast = Parser(source).parse()
print(ast.getValue())
