def get_expression(request):
if request.method == 'POST':
form = ExpressionForm(request.POST)
if form.is_valid():
try:
expression = form.cleaned_data['expression']
print form.cleaned_data['expression']
e2 = Expression()
e2.expression_string = str(form.cleaned_data['expression'])
e = Evaluator()
result = e.evaluate_string(expression)
e2.expression_result = result
e2.save()
print result
return render(request, 'result.html', {'result': result})
except:
result = 'Wrong input! Try again.'
return render(request, 'result.html', {'result': result})
else:
form = ExpressionForm()
return render(request, 'index.html', {'form': form})
