1. 首頁
  2. 問答
  3. 在Kivy中使用變量和函數時未定義名稱

在Kivy中使用變量和函數時未定義名稱

2017-08-20 103 views
2

我正在創建一個與服務器交互的程序，該程序適用於員工在移動設備上使用，所以我正在使用Kivy，而且我正在首先是GUI。盡我所知，我遵循了文檔的說明，但似乎無法解決此問題。我的代碼是指變量和函數，但是，當它運行它崩潰，給我和錯誤代碼，說明一個變量或函數（取稱爲第一）的名字沒有被定義在Kivy中使用變量和函數時未定義名稱

這裏是我的代碼：

import sqlalchemy 
import os 
import kivy 
import datetime 
from kivy.uix.screenmanager import ScreenManager, Screen 
from kivy import app 
from kivy.uix import button 
from kivy.uix.textinput import TextInput 
from kivy.uix.label import Label 
from kivy.lang import Builder 

admincode = "..." 
# SQL Functions 
# Incomplete as of now 
# shift will be pulled from database 
shift = False 

def UserLogin(id = 'unfilled', password = 'unfilled'): 
    global user 
    global localhost_enabled 
    if id == "localtest" and password == admincode: 
     user = id 
     localhost_enabled = True 
     return True 
    elif id == "servertest" and password == admincode: 
     user = id 
     localhost_enabled = False 
     return True 
def UserLogout(): 
    user = '' 

def ShiftIn(): 
    global shift 
    shift = True 
def ShiftOut(): 
    global shift 
    shift = False 
def submitform(StartCash=0, EndCash=0): 
    NetCash = EndCash - StartCash 
    print("NetCash = {0}".format(NetCash)) 
def ShiftGetter(): 
    if shift == True: 
     return "Shift Out" 
    else: 
     return "Shift In" 
# Kivy Building 

Builder.load_string(""" 
<LoginScreen>: 
    BoxLayout: 
     Label: 
      text: 'ID:' 
     TextInput: 
      id: LoginInputUser 
      text: '' 
      multiline: False 
     Label: 
      text: "Password:" 
     TextInput: 
      id: LoginInputPassword 
      text: '' 
      password: True 
      multiline: False 
     Button: 
      text: 'login' 
      on_press: 
       if UserLogin(LoginInputUser.text, LoginInputPassword.text): LoginValidationText.text = '' 
       if UserLogin(LoginInputUser.text, LoginInputPassword.text): root.manager.current = 'Home' 
       else: LoginValidationText.text = 'Invalid Username or Password' 
     Label: 
      text: '' 
      id: 'LoginValidationText' 


<HomeScreen>: 
    BoxLayout: 
     Button: 
      text: 'Logout' 
      on_press: 
       UserLogout() 
       root.manager.current = 'Login' 
     Button: 
      text: 'Open Submission Form' 
      on_press: root.manager.current = 'Form' 
     Button: 
      text: 'Shift Out' if shift == True else 'Shift In' 
      on_press: 
       if shift: ShiftOut() 
       else: ShiftIn() 


<FormScreen>: 
    BoxLayout: 
     Button: 
      text: 'Back to menu' 
      on_press: root.manager.current = 'Home' 
     Label: 
      text: 'Start Money:' 
     TextInput: 
      id: StartCash 
      text: '' 
      multiline: False 
     Label: 
      text: 'End Money:' 
     TextInput: 
      id: EndCash 
      text: '' 
      multiline: False 
     Button: 
      text: 'Submit' 
      on_press: submitform(StartCash = int(StartCash.text), EndCash = int(EndCash.text)) 

""") 
class LoginScreen(Screen): 
    pass 

class HomeScreen(Screen): 
    pass 

class FormScreen(Screen): 
    pass 

sm = ScreenManager() 
sm.add_widget(LoginScreen(name='Login')) 
sm.add_widget(HomeScreen(name='Home')) 
sm.add_widget(FormScreen(name='Form')) 
class RealApp(App): 
    def build(self): 
     return sm 

RealApp().run()

和錯誤消息：

[INFO ] [Logger  ] Record log in C:\Users\sherl\.kivy\logs\kivy_17-08-20_28.txt 
[INFO ] [Kivy  ] v1.10.0 
[INFO ] [Python  ] v3.6.2 (v3.6.2:5fd33b5, Jul 8 2017, 04:14:34) [MSC v.1900 32 bit (Intel)] 
[INFO ] [Factory  ] 194 symbols loaded 
[INFO ] [Image  ] Providers: img_tex, img_dds, img_sdl2, img_gif (img_pil, img_ffpyplayer ignored) 
[INFO ] [Text  ] Provider: sdl2 
[INFO ] [OSC   ] using <thread> for socket 
[INFO ] [Window  ] Provider: sdl2 
[INFO ] [GL   ] Using the "OpenGL" graphics system 
[INFO ] [GL   ] GLEW initialization succeeded 
[INFO ] [GL   ] Backend used <glew> 
[INFO ] [GL   ] OpenGL version <b'4.4.0 - Build 20.19.15.4531'> 
[INFO ] [GL   ] OpenGL vendor <b'Intel'> 
[INFO ] [GL   ] OpenGL renderer <b'Intel(R) HD Graphics 5500'> 
[INFO ] [GL   ] OpenGL parsed version: 4, 4 
[INFO ] [GL   ] Shading version <b'4.40 - Build 20.19.15.4531'> 
[INFO ] [GL   ] Texture max size <16384> 
[INFO ] [GL   ] Texture max units <32> 
[INFO ] [Shader  ] fragment shader: <b"WARNING: 0:7: '' : #version directive missing"> 
[INFO ] [Shader  ] vertex shader: <b"WARNING: 0:7: '' : #version directive missing"> 
[INFO ] [Window  ] auto add sdl2 input provider 
[INFO ] [Window  ] virtual keyboard not allowed, single mode, not docked 
Traceback (most recent call last): 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 249, in create_handler 
    return eval(value, idmap), bound_list 
    File "<string>", line 39, in <module> 
NameError: name 'shift' is not defined 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 597, in _apply_rule 
    rctx['ids']) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 254, in create_handler 
    cause=tb) 
kivy.lang.builder.BuilderException: Parser: File "<inline>", line 39: 
... 
     37:   on_press: root.manager.current = 'Form' 
     38:  Button: 
>> 39:   text: 'Shift Out' if shift == True else 'Shift In' 
     40:   on_press: 
     41:    if shift: ShiftOut() 
... 
NameError: name 'shift' is not defined 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 249, in create_handler 
    return eval(value, idmap), bound_list 
    File "<string>", line 39, in <module> 


During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "C:\Users\sherl\PycharmProjects\PokerRoomSQL\User\UserDepreciated.py", line 126, in <module> 
    sm.add_widget(HomeScreen(name='Home')) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\relativelayout.py", line 265, in __init__ 
    super(RelativeLayout, self).__init__(**kw) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\floatlayout.py", line 65, in __init__ 
    super(FloatLayout, self).__init__(**kwargs) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\layout.py", line 76, in __init__ 
    super(Layout, self).__init__(**kwargs) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\widget.py", line 345, in __init__ 
    Builder.apply(self, ignored_consts=self._kwargs_applied_init) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 451, in apply 
    self._apply_rule(widget, rule, rule, ignored_consts=ignored_consts) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 612, in _apply_rule 
    e), cause=tb) 
kivy.lang.builder.BuilderException: Parser: File "<inline>", line 39: 
... 
     37:   on_press: root.manager.current = 'Form' 
     38:  Button: 
>> 39:   text: 'Shift Out' if shift == True else 'Shift In' 
     40:   on_press: 
     41:    if shift: ShiftOut() 
... 
BuilderException: Parser: File "<inline>", line 39: 
... 
     37:   on_press: root.manager.current = 'Form' 
     38:  Button: 
>> 39:   text: 'Shift Out' if shift == True else 'Shift In' 
     40:   on_press: 
     41:    if shift: ShiftOut() 
... 
NameError: name 'shift' is not defined 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 249, in create_handler 
    return eval(value, idmap), bound_list 
    File "<string>", line 39, in <module> 

    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 597, in _apply_rule 
    rctx['ids']) 
    File "C:\Users\sherl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 254, in create_handler 
    cause=tb)

來源

2017-08-20 Aidan Williams

+0

您有以下錯誤：（1）更改 「從kivy導入應用程序」，以 「從kivy.app導入應用程序」（ 2）添加「from kivy.properties import BooleanProperty」（3）將「shift = False」替換爲「shift = BooleanProperty（False）」（4）刪除所有對「全局移位」 – ikolim

回答

0

您有以下錯誤：

  1. 改變 「從kivy導入應用程序」，以 「從kivy.app導入應用程序」
  2. 添加 「從kivy.properties導入BooleanProperty」
  3. 替換 「移=假」 到 「移= BooleanProperty（假）」
  4. 刪除所有對「全局移位」的引用

我已經將程序分離到Python程序和kv文件中，如下所示。

體改在main.py

import sqlalchemy 
import os 
import datetime 

from kivy.app import App 
from kivy.properties import BooleanProperty 
from kivy.uix.screenmanager import ScreenManager, Screen 

admincode = "..." 
# SQL Functions 
# Incomplete as of now 
# shift will be pulled from database 
shift = BooleanProperty(False) 


def UserLogin(id='unfilled', password='unfilled'): 
    global user 
    global localhost_enabled 
    if id == "localtest" and password == admincode: 
     user = id 
     localhost_enabled = True 
     return True 
    elif id == "servertest" and password == admincode: 
     user = id 
     localhost_enabled = False 
     return True 


def UserLogout(): 
    user = '' 


def ShiftIn(): 
    shift = True 


def ShiftOut(): 
    shift = False 


def submitform(StartCash=0, EndCash=0): 
    NetCash = EndCash - StartCash 
    print("NetCash = {0}".format(NetCash)) 


def ShiftGetter(): 
    if shift: 
     return "Shift Out" 
    else: 
     return "Shift In" 


class LoginScreen(Screen): 
    pass 


class HomeScreen(Screen): 
    pass 


class FormScreen(Screen): 
    pass 


sm = ScreenManager() 
sm.add_widget(LoginScreen(name='Login')) 
sm.add_widget(HomeScreen(name='Home')) 
sm.add_widget(FormScreen(name='Form')) 


class RealApp(App): 
    def build(self): 
     return sm 

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

real.kv

#:kivy 1.10.0 

<LoginScreen>: 
    BoxLayout: 
     Label: 
      text: 'ID:' 
     TextInput: 
      id: LoginInputUser 
      text: '' 
      multiline: False 
     Label: 
      text: "Password:" 
     TextInput: 
      id: LoginInputPassword 
      text: '' 
      password: True 
      multiline: False 
     Button: 
      text: 'login' 
      on_press: 
       if UserLogin(LoginInputUser.text, LoginInputPassword.text): LoginValidationText.text = '' 
       if UserLogin(LoginInputUser.text, LoginInputPassword.text): root.manager.current = 'Home' 
       else: LoginValidationText.text = 'Invalid Username or Password' 
     Label: 
      text: '' 
      id: 'LoginValidationText' 


<HomeScreen>: 
    BoxLayout: 
     Button: 
      text: 'Logout' 
      on_press: 
       UserLogout() 
       root.manager.current = 'Login' 
     Button: 
      text: 'Open Submission Form' 
      on_press: root.manager.current = 'Form' 
     Button: 
      text: 'Shift Out' if shift == True else 'Shift In' 
      on_press: 
       if shift: ShiftOut() 
       else: ShiftIn() 


<FormScreen>: 
    BoxLayout: 
     Button: 
      text: 'Back to menu' 
      on_press: root.manager.current = 'Home' 
     Label: 
      text: 'Start Money:' 
     TextInput: 
      id: StartCash 
      text: '' 
      multiline: False 
     Label: 
      text: 'End Money:' 
     TextInput: 
      id: EndCash 
      text: '' 
      multiline: False 
     Button: 
      text: 'Submit' 
      on_press: submitform(StartCash = int(StartCash.text), EndCash = int(EndCash.text))

來源

2017-08-21 14:25:14 ikolim

相關問題

 相關問題