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[英]How do I get a variable in one function to another function in python?
[英]How do I send a variable from one function to another function?
这是一个我希望能够将一个变量传递给另一个变量的函数的示例。
def foo(request):
if request.method == "POST":
unique_id = request.POST.get('per_id','')
baz = get_object_or_404(Name, pk=unique_id)
return render(request, 'details/guy.html', {'baz': baz})
return render(request, 'details/person.html')
def bar(request):
if request.method == "POST":
baz = get_object_or_404(Name, pk=unique_id)
return render(request, 'details/guy.html', {'baz': baz})
return render(request, 'details/guy.html')
问题是这样的:
local variable 'unique_id' referenced before assignment
那么,如何获取此变量以将foo(request)函数提供给bar(request)函数?
我知道我可以使用cPickle,但是该网站将获得的流量几乎肯定会导致cPickle对象与另一个人混在一起。
会话变量应少用。
def foo(request):
if request.method == "POST":
unique_id = request.POST.get('per_id','')
request.session["unique_id"] = unique_id
baz = get_object_or_404(Name, pk=unique_id)
return render(request, 'details/guy.html', {'baz': baz})
return render(request, 'details/person.html')
def bar(request):
if request.method == "POST":
baz = get_object_or_404(Name, pk=request.session["unique_id"])
del request.session["unique_id"]
return render(request, 'details/guy.html', {'baz': baz})
return render(request, 'details/guy.html')
我不建议,但是也可以使用全局变量。
unique_id = None
def foo(request):
global unique_id
unique_id = 10
def bar(request):
print unique_id
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