Question

运行django出错，object has no attribute 'has_key'，是什么问题？

源码是
from django.http import HttpResponse
text = """<form method="post" action="/add/">
<input type="text" name="a" value="%d"> + <input type="text" name="b" value="%d">
<input type="submit" value="="> <input type="text" value="%d">
</form>"""
def index(request):
if request.POST.has_key('a'):
a = int(request.POST['a'])
b = int(request.POST['b'])
else:
a = 0
b = 0
return HttpResponse(text % (a, b, a + b))

出错是
'QueryDict' object has no attribute 'has_key'

Answer 1

QueryDict不是标准Python字典.你直接这样就好:

        a = int(request.POST.get('a',0))
        b = int(request.POST.get('b',0))

Answer 2

request.POST不是map