我在python下面的代码在线上给了我一个警告:
some_new_object['someVar'] = cd['someVar']
警告是
Expected type 'Union[Integral, slice]', got 'str' instead
代码:
def some_object():
return {
'someId': 0,
'someVar' : ''
}
def warn_test(in_list):
try:
new_list = []
some_new_object = some_object()
for cd in in_list:
if cd['someVar']:
new_list.append(cd)
for cd in new_list:
some_new_object['someVar'] = cd['someVar']
in_list.append(some_new_object.copy())
return in_list
except Exception:
print 'baaa'
#Main Program
new_obj = some_object()
new_obj['someId'] = 1
new_obj['someVar'] = 'Next'
new_obj2 = some_object()
new_obj2['someId'] = 1
new_obj2['someVar'] = None
new_list = []
new_list.append(new_obj)
new_list.append(new_obj2)
out_list = warn_test(new_list)
for obj in out_list:
print obj
如果我将函数warn_test更改为:
def warn_test(in_list):
try:
new_list = []
some_new_object = some_object()
for cd in in_list:
if cd['someVar']:
some_new_object['someVar'] = cd['someVar']
new_list.append(some_new_object.copy())
for cd in new_list:
in_list.append(cd)
return in_list
except Exception:
print 'baaa'
它没有给我任何警告。
有人可以帮助我理解为什么我会收到警告,以及如何在第二次迭代中访问cd['someVar']
而不会收到警告?
我知道这段代码很奇怪,我需要这个用于我正在处理的项目,我在这里分享了这个测试,但它给了我相同的警告,所以这个解决方案将在我的系统中修复它。 (没有警告是该系统必须的Haves之一)
答案 0 :(得分:0)
迟到总比不到好。
总的来说,我发现如果变量/方法返回是强类型的,这些警告就会消失。