Question

我是编码的新手，正在努力将变量输入“ frameA”输入输出到“ frameB”。我的问题是，应如何编写代码的布局，以使输入到FrameA的变量可用（并在用户输入时刷新-通过单击按钮或取消选择textctrl等）在frameB中？

我正在使用wxpython，并以Wx Builder为指导，但是编写实际的UI代码时，我自己却可以帮助理解其底层内容。我试过了class-> def-> frame UI，按照我想要的方式组织了这些框架，根据需要显示和隐藏，并且我想要的变量可以在该框架内单击按钮时打印出来，但是无法从该外部访问框架，即使我正在“返回”所需的变量。

我暂时不在电脑上，可以的话，我可以在这里上传代码。现在我的理解是：（其中frameB会显示原始VariA消息，直到FrameA事件更新它为止）

VariA = ‘I want this to be changed to say moose in frameB’

Def frameA
    Frame A ui info
    On some event VariA = ‘moose’
    Return VariA
    Layout()

Def frameB
    Frame B ui info
    Statictext label somewhere in the UI is VariA

由于我还是新手，所以我可以理解每一行代码，但是更大的组织仍然对我很混乱。如果代码结构在设计上是所有框架和面板等，则具有自己的类/定义，“主代码”中的类/定义之外的所有变量都将在类/定义中调用并更新，然后返回。我知道这是对代码的一种超级简单的思考方式，有人可以为此推荐任何好的阅读材料来帮助我“点击”吗？谢谢，日落

Answer 1

如果您希望所有类均可访问var的值，则需要在分配新的global var的方法InputUpdate()中将行Class FrameA添加到var中的方法var值var。

但是，这将仅使import wx var = "This Should change to whatever is typed in FrameA" class FrameA ( wx.Frame ): def __init__(self, parent): wx.Frame.__init__ (self, parent, id=wx.ID_ANY, title=wx.EmptyString, pos=(0,0), size=(500,300), style=wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL) bSizer1 = wx.BoxSizer(wx.HORIZONTAL) self.INPUT = wx.TextCtrl(self, wx.ID_ANY, wx.EmptyString, wx.DefaultPosition, wx.DefaultSize, 0) bSizer1.Add(self.INPUT, 1, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5) self.SetSizer(bSizer1) self.INPUT.Bind(wx.EVT_TEXT, self.InputUpdate) def InputUpdate(self, Evt): #### You need to add the following line before assigning the new value to #### var in order to modify the global var variable and not the local #### var variable global var var = self.INPUT.GetValue() #print (var) #### The try/except block is placed to avoid having an error if the text #### in frameA changes but frameB does not exist anymore. The code inside #### the try statement changes the text in frameB in real time. try: frmB.OUTPUT.SetLabel(var) except Exception: pass class FrameB ( wx.Frame ): def __init__(self, parent): wx.Frame.__init__ (self, parent, id=wx.ID_ANY, title=wx.EmptyString, pos=(100,100), size=(500,300), style=wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL) bSizer2 = wx.BoxSizer(wx.VERTICAL) self.OUTPUT = wx.StaticText(self, wx.ID_ANY, var, wx.DefaultPosition, wx.DefaultSize, 0) bSizer2.Add(self.OUTPUT, 1, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5) #### Button to check the value of the global var variable and make sure #### that the code in InputUpdate actually changes the value of the global #### variable var self.button = wx.Button(self, wx.ID_ANY, label='Var Value') bSizer2.Add(self.button, 1, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5) self.SetSizer(bSizer2) self.button.Bind(wx.EVT_BUTTON, self.varValue) def varValue(self, event): #### Print the value of the global variable var print(var) if __name__ == '__main__': app = wx.App() frmA = FrameA(None) frmB = FrameB(None) frmA.Centre() frmB.Centre() frmA.Show() frmB.Show() app.MainLoop()可供该模块中的所有类访问。如果将代码分成两个文件，则将有两个模块，apiVersion: v1 kind: Secret metadata: namespace: test name: api-access-secret type: Opaque data: username: YWRtaW4= password: cGFzc3dvcmQ= --- # Service account for preventing API access apiVersion: v1 kind: ServiceAccount metadata: namespace: test name: no-access-sa --- # Service account for accessing secrets API apiVersion: v1 kind: ServiceAccount metadata: namespace: test name: secret-access-sa --- # A role with no access apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: namespace: test name: no-access-cr rules: - apiGroups: [""] # "" indicates the core API group resources: [""] verbs: [""] --- # A role for reading/listing secrets apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: namespace: test name: secret-access-cr rules: - apiGroups: [""] # "" indicates the core API group resources: ["secrets", "pods"] verbs: ["get", "watch", "list"] --- # The role binding to combine the no-access service account and role apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: namespace: test name: no-access-rb subjects: - kind: ServiceAccount name: no-access-sa roleRef: kind: Role name: no-access-cr apiGroup: rbac.authorization.k8s.io --- # The role binding to combine the secret-access service account and role apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: namespace: test name: secret-access-rb subjects: - kind: ServiceAccount name: secret-access-sa roleRef: kind: Role name: secret-access-cr apiGroup: rbac.authorization.k8s.io --- # Create a pod with the no-access service account kind: Pod apiVersion: v1 metadata: namespace: test name: no-access-pod spec: serviceAccountName: no-access-sa containers: - name: no-access-container image: k8s.gcr.io/busybox command: [ "/bin/sh", "-c" ] args: - while true; do env; done env: # Define the environment variable - name: SPECIAL_LEVEL_KEY valueFrom: secretKeyRef: name: api-access-secret key: username --- # Create a pod with the secret-access service account kind: Pod apiVersion: v1 metadata: namespace: test name: secret-access-pod spec: serviceAccountName: secret-access-sa containers: - name: access-container image: k8s.gcr.io/busybox command: [ "/bin/sh", "-c" ] args: - while true; do env; done env: # Define the environment variable - name: SPECIAL_LEVEL_KEY valueFrom: secretKeyRef: name: api-access-secret key: username仅在定义它的模块中可以访问，除非您也将定义var的模块导入另一个模块中。

带有一些相关注释的代码：

SPECIAL_LEVEL_KEY=admin

wxpython中多个框架的代码布局指南

1 个答案: