Django Pycharm single-step debugging prompt {NameError} name 'orgs' is not definded

problem description

Debug

related codes

class OrgView(View):
    """
    
    """
    def get(self, request):
        -sharp
        all_orgs = CourseOrg.objects.all()
        org_nums = all_orgs.count()
        -sharp
        all_citys = CityDict.objects.all()

        -sharp 
        try:
            page = request.GET.get("page", 1)
        except PageNotAnInteger:
            page = 1

        p = Paginator(all_orgs, 2, request=request)

        orgs = p.page(page)  -sharp 
        return render(request, "org_list.html", {
            "all_orgs": orgs,
            "all_citys": all_citys,
            "org_nums": org_nums
        })

what result do you expect? What is the error message actually seen?

according to reason, this mistake should not have occurred. Is it Pycharm"s BUG??
paste the version of Pycharm:

PyCharm 2018.1.4 (Professional Edition)
Build-sharpPY-181.5087.37, built on May 24,2018
Licensed to PyCharm Evaluator
Expiration date: August 19,2018
JRE: 1.8.0_152-release-1136-b39 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0

I hope Daniel will give me some advice.

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