在Raspbian上与Kivy一起使用子进程Python模块

Question

我试过在Linux Raspbian上使用python kivy调用可执行文件。 我的代码无法正常工作，请按下我的应用程序冻结并且不能打开可执行文件。 我试着Python解释：

>> from subprocess import call 
>> call("7w.sh") 

做工精细，在python kivy可执行文件无法打开......

可执行为什么不开？ 我的代码：

Main.py

from kivy.uix.floatlayout import FloatLayout 
from kivy.app import App 
from kivy.config import Config 
Config.set('graphics', 'width', '800') 
Config.set('graphics', 'height', '480') 
from subprocess import call 



class SmAgro(FloatLayout): 
    def __init__(self, **kwargs): 
     super(SmAgro, self).__init__(**kwargs) 
     self.screen_list = [] 

    def call_External_Pog(self): 
     call(['7w.sh']) 

    def changeScreen(self, next_screen): 

     if next_screen == "configuracoes": 
      self.ids.kivy_screen_manager.current = "configuracoes_screen" 

     if next_screen == "equipamentos": 
      self.ids.kivy_screen_manager.current = "equipamento_screen" 

     if next_screen == "sobre": 
      self.ids.kivy_screen_manager.current = "about_screen" 

     if next_screen == "voltar": 
      self.ids.kivy_screen_manager.current = "start_screen" 


class SMAgroApp(App): 
    def __init__(self, **kwargs): 
     super(SMAgroApp, self).__init__(**kwargs) 
    def build(self): 
     return SmAgro() 


if __name__ == '__main__': 
    SMAgroApp().run() 

我smagro.kv

<SMAgro>: 
    ScreenManager: 
     id: kivy_screen_manager 
     StartScreen: 
      name: "start_screen" 

     EquipamentoScreen: 
      id: equipamento_screen 
      name: "equipamento_screen" 

     ConfiguracoesScreen: 
      id: configuracoes_screen 
      name: "configuracoes_screen" 

     AboutScreen: 
      id: about_screen 
      name: "about_screen" 

<StartScreen@Screen>: 
    canvas: 
     Color: 
      rgb: [1,1,1,1] 
     Rectangle: 
      pos: self.pos 
      size: self.size 
    FloatLayout: 
     pos_hint: {'center_y': 0.5, 'center_x': 0.5} 
     size_hint: 0.45, 0.48 
     Label: 
      id: lbl_start_home 
      text: 'SMAgro ' 
      color: [0,0,0,.200] 
      font_size: root.height/6 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      size_hint_x:0.3 
      size_hint_y:1.6 
      pos_hint: {'y': .5, 'x': .35} 
     Button: 
      on_release: app.root.changeScreen(self.text.lower()) 
      background_color: [.4,1,.1,1] 
      pos_hint: {'x': 0, 'y': 0.375} 
      size_hint: 1, 0.625 
      text: "Equipamentos" 
      text_size: self.size 
      padding: 8, 8 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      Image: 
       source: '../data/img/Truck-96.png' 
       color: [1,1,1,1] 
       y: self.parent.y + self.parent.height - 120 
       x: self.parent.x + self.parent.height + 70 

     Button: 
      on_release: app.root.changeScreen(self.text.lower()) 
      background_color: [.4,1,.1,1] 
      pos_hint: {'x': 0, 'y': 0} 
      size_hint: .5, 0.375 
      text: 'Configuracoes' 
      text_size: self.size 
      padding: 8, 8 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      Image: 
       source: '../data/img/Settings-64.png' 
       color: [1,1,1,1] 
       y: self.parent.y + self.parent.height - 90 
       x: self.parent.x + self.parent.height - 15 
     Button: 
      on_release: app.root.call_External_Pog() 
      background_color: [.4,1,.1,1] 
      pos_hint: {'x': .5, 'y': 0} 
      size_hint: .5, 0.375 
      text: 'Routerizador' 
      text_size: self.size 
      padding: 8, 8 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      Image: 
       source: '../data/img/GPS Device-64.png' 
       color: [1,1,1,1] 
       y: self.parent.y + self.parent.height - 90 
       x: self.parent.x + self.parent.height - 15 

<EquipamentoScreen@Screen>: 
    canvas: 
     Color: 
      rgb: [1,1,1,1] 
     Rectangle: 
      pos: self.pos 
      size: self.size 

    FloatLayout: 
     Label: 
      id: lbl_equip 
      text: 'Equipamento: ' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      size_hint_x:0.3 
      size_hint_y:1.8 
     BoxLayout: 
      pos: (220,410) 
      size_hint_x: 0.621 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_equip 
       font_size: '36sp' 
       padding_y: (self.height - self.line_height)/2 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 
     Label: 
      id: lbl_operador 
      text: 'Operador: ' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      size_hint_x:0.3 
      size_hint_y:1.6 
     BoxLayout: 
      pos: (220,356) 
      size_hint_x: 0.2 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_operador 
       font_size: '36sp' 
       padding_y: (self.height - self.line_height)/2 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 
      Button: 
       id: btn_search 
       background_normal: '../data/img/AO734.png' 
       border: 30, 30, 30, 30 
       Image: 
        source: '../data/img/Search-64.png' 
        y: self.parent.y - 28 
        x: self.parent.x- 10 
     BoxLayout: 
      pos: (400,356) 
      size_hint_x: 0.4 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_search 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 

     Label: 
      id: lbl_medicao 
      text: 'Medicao inicial: ' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      size_hint_x:0.3 
      size_hint_y:1.35 

     BoxLayout: 
      pos: (220,300) 
      size_hint_x: 0.2 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_medicao 
       font_size: '36sp' 
       padding_y: (self.height - self.line_height)/2 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 

     BoxLayout: 
      Label: 
       id: lbl_turma 
       text: 'Turma: ' 
       color: [0, 0, 0, 1] 
       font_size: root.height/20 
       font_name: '../data/fonts/Segoe_UI.ttf' 

      Label: 
       text: 'Diurno:' 
       color: [0, 0, 0, 1] 
      CheckBox: 
       group: 'turma' 
       on_release: True 

      Label: 
       text: 'Noturno:' 
       color: [0, 0, 0, 1] 
      CheckBox: 
       group: 'turma' 

      Label: 
       text: 'Vespertino:' 
       color: [0, 0, 0, 1] 
      CheckBox: 
       group: 'turma' 

     BoxLayout: 
      pos: (10,10) 
      size_hint_x: 0.2 
      size_hint_y: 0.12 
      Button: 
       on_release: root.manager.current = root.manager.previous() 
       id: btn_previous 
       background_normal: '../data/img/Circled Left 2-64.png' 
      Label: 
       id: lbl_previous 
       text: 'Voltar' 
       color: [0, 0, 0, 1] 
       font_size: root.height/20 
       font_name: '../data/fonts/Segoe_UI.ttf' 

     BoxLayout: 
      pos: (630,10) 
      size_hint_x: 0.2 
      size_hint_y: 0.12 
      Label: 
       id: lbl_next 
       text: 'Avancar' 
       color: [0, 0, 0, 1] 
       font_size: root.height/20 
       font_name: '../data/fonts/Segoe_UI.ttf' 
      Button: 
       id: btn_next 
       background_normal: '../data/img/Circled Right 2-64.png' 

<ConfiguracoesScreen@Screen>: 
    canvas: 
     Color: 
      rgb: [1,1,1,1] 
     Rectangle: 
      pos: self.pos 
      size: self.size 

    FloatLayout: 
     Label: 
      id: lbl_cod_equipamento 
      text: 'Cod. equipamento: ' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 
      size_hint_x:0.3 
      size_hint_y:1.75 
     BoxLayout: 
      pos: (220,410) 
      size_hint_x: 0.2 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_cod_equipamento 
       font_size: '36sp' 
       padding_y: (self.height - self.line_height)/2 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 
      Button: 
       id: btn_search 
       background_normal: '../data/img/AO734.png' 
       border: 30, 30, 30, 30 
       Image: 
        source: '../data/img/Search-64.png' 
        y: self.parent.y - 28 
        x: self.parent.x- 10 
     BoxLayout: 
      pos: (400,410) 
      size_hint_x: 0.4 
      size_hint_y: 0.11 
      TextInput: 
       id: txt_search 
       border: 30, 30, 30, 30 
       background_normal: '../data/img/AO734.png' 

     BoxLayout: 
      orientation: 'vertical' 
      pos_hint: {'center_y': 0.5, 'center_x': 0.5} 
      size_hint_x: .5 
      size_hint_y: .5 
      Button: 
       id: btn_update 
       text: 'Atualizar dados' 
       font_name: '../data/fonts/Segoe_UI.ttf' 
       Image: 
        source: '../data/img/Available Updates-64.png' 
        y: self.parent.y - 22 
        x: self.parent.x- 10 
      Button: 
       id: btn_clear 
       text: 'Limpar dados' 
       font_name: '../data/fonts/Segoe_UI.ttf' 
       Image: 
        source: '../data/img/Broom-64.png' 
        y: self.parent.y - 22 
        x: self.parent.x- 10 
      Button: 
       id: btn_senddata 
       text: 'Enviar dados' 
       font_name: '../data/fonts/Segoe_UI.ttf' 
       Image: 
        source: '../data/img/Sent-64.png' 
        y: self.parent.y - 22 
        x: self.parent.x- 10 
      Button: 
       id: btn_save 
       text: 'Gravar' 
       font_name: '../data/fonts/Segoe_UI.ttf' 
       Image: 
        source: '../data/img/Save-64.png' 
        y: self.parent.y - 22 
        x: self.parent.x- 10 
     BoxLayout: 
      pos: (10,10) 
      size_hint_x: 0.2 
      size_hint_y: 0.12 
      Button: 
       on_release: root.manager.current = root.manager.previous() 
       id: btn_previous 
       background_normal: '../data/img/Circled Left 2-64.png' 
      Label: 
       id: lbl_previous 
       text: 'Voltar' 
       color: [0, 0, 0, 1] 
       font_size: root.height/20 
       font_name: '../data/fonts/Segoe_UI.ttf' 

     BoxLayout: 
      pos: (630,10) 
      size_hint_x: 0.2 
      size_hint_y: 0.12 
      Label: 
       id: lbl_next 
       text: 'Avancar' 
       color: [0, 0, 0, 1] 
       font_size: root.height/20 
       font_name: '../data/fonts/Segoe_UI.ttf' 
      Button: 
       id: btn_next 
       background_normal: '../data/img/Circled Right 2-64.png' 

<AboutScreen@Screen>: 
    canvas: 
     Color: 
      rgb: [1,1,1,1] 
     Rectangle: 
      pos: self.pos 
      size: self.size 
    BoxLayout: 
     padding: root.width * .02, root.height * .02 
     Label: 
#   text: app.getText() 
      color: [.4,1,.1,1] 
      halign: "center" 
      markup: True 
      font_size: root.height/20 
      text_size: self.width, None 
      center_y: .5 
      on_ref_press: app.on_ref_press(*args) 
      font_name: '../data/fonts/Segoe_UI.ttf' 

    BoxLayout: 
     pos: (10,10) 
     size_hint_x: 0.1 
     size_hint_y: 0.11 
     Button: 
      on_release: root.manager.current = root.manager.next() 
      id: btn_previous 
      background_normal: '../data/img/Circled Left 2-64.png' 
     Label: 
      id: lbl_previous 
      text: 'Voltar' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 

    BoxLayout: 
     pos: (630,10) 
     size_hint_x: 0.1 
     size_hint_y: 0.11 
     Label: 
      id: lbl_next 
      text: 'Avancar' 
      color: [0, 0, 0, 1] 
      font_size: root.height/20 
      font_name: '../data/fonts/Segoe_UI.ttf' 
     Button: 
      id: btn_next 
      background_normal: '../data/img/Circled Right 2-64.png' 

Answer 1

请试试这个：

>>>import subprocess 
>>>p = subprocess.Popen(["bash", "7w.sh", ""]) 
>>>p.communicate() 

我Python3上树莓派3 Minibian下测试