我遇到了这个问题，如果输入字段为空，我希望我的程序显示一个messageebox。单击按钮时会运行该功能，它将从frame类的输入字段中获取所有数据，并将它们放入电子表格文件中。所有输入字段都存储在另一个函数中。我还有另一个名为emailframe的班级。这是按钮功能的代码：
def getVal(self):
try:
path = str(tm.strftime("%d-%m-%Y")) + ' - ' + str(tm.strftime("%A")) + '.xlsx'
wb = xl.load_workbook(path)
ws = wb.active
entry_list = [child for child in root.winfo_children()
if isinstance(child, tk.Entry)]
for entry in entry_list:
if not entry.get():
msgbox.showinfo('Daily Accounts', 'Enter in to entry fields.')
else:
ws['B3'] = float(self.entryBags.get())
ws['B4'] = float(self.entryNotes.get())
ws['B5'] = float(self.entry2pound.get())
ws['B6'] = float(self.entry1pound.get())
ws['B7'] = float(self.entry50p.get())
ws['B8'] = float(self.entry20p.get())
ws['B9'] = float(self.entry10p.get())
ws['B10'] = float(self.entry5p.get())
ws['B11'] = float(self.entry2p.get())
ws['B12'] = float(self.entry1p.get())
ws['B14'] = float(self.entryPrevTill.get())
ws['B16'] = float(self.entryCard.get())
ws['B17'] = float(self.entryCash.get())
wb.save(path)
app = xw.App(visible = False)
book = xw.Book(path)
ws2 = book.sheets[0]
total_till = str(ws2.range('B13').value)
till = str(ws2.range('B15').value)
day_total = str(ws2.range('B18').value)
self.lblTotalTillDisplay.configure(text = '£' + total_till)
self.lblLeftTillDisplay.configure(text = '£' + till)
self.lbldaytotal2.configure(text = '£' + day_total)
msgbox.showinfo('', 'Data Submitted.')
book.close()
app.kill()
except IOError:
msgbox.showinfo('Daily Accounts', 'New Day has not been created.')
我尝试使用winfo_children函数获取所有输入字段，但我不确定它是否有效，因为我在另一个类中有其他输入字段，我不想检索。
这是我剩下的代码的主要部分：
class frame(tk.Frame):
def __init__(self, master):
self.frame = ttk.Frame(master)
self.frame.pack(fill="both", expand = True)
self.entryfields()
self.buttons()
def entryfields(self):
vcmd = (self.frame.register(self.validate),
'%d', '%i', '%P', '%s', '%S', '%v', '%V', '%W')
self.entryBags = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entryBags.place(x = 100, y = 40)
self.entryNotes = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entryNotes.place(x = 100, y = 60)
self.entry2pound = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry2pound.place(x = 100, y = 80)
self.entry1pound = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry1pound.place(x = 100, y = 100)
self.entry50p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry50p.place(x = 100, y = 120)
self.entry20p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry20p.place(x = 100, y = 140)
self.entry10p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry10p.place(x = 100, y = 160)
self.entry5p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry5p.place(x = 100, y = 180)
self.entry2p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry2p.place(x = 100, y = 200)
self.entry1p = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entry1p.place(x = 100, y = 220)
self.entryPrevTill = tk.Entry(self.frame)
self.entryPrevTill.place(x = 100, y = 260)
self.entryPrevTill.insert(0, 100)
self.entryCard = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entryCard.place(x = 100, y = 300)
self.entryCash = tk.Entry(self.frame, validate = 'key', validatecommand = vcmd)
self.entryCash.place(x = 100, y = 320)
def validate(self, action, index, value_if_allowed,
prior_value, text, validation_type, trigger_type, widget_name):
if(action=='1'):
if text in '0123456789.':
try:
float(value_if_allowed)
return True
except ValueError:
return False
else:
return False
else:
return True
def buttons(self):
self.btnSub = tk.Button(self.frame, text = 'Submit', width = 30, command = self.getVal)
self.btnSub.place(x = 20, y = 340)
def getVal(self):
try:
path = str(tm.strftime("%d-%m-%Y")) + ' - ' + str(tm.strftime("%A")) + '.xlsx'
wb = xl.load_workbook(path)
ws = wb.active
entry_list = [child for child in root.winfo_children()
if isinstance(child, tk.Entry)]
for entry in entry_list:
if not entry.get():
msgbox.showinfo('Daily Accounts', 'New Day has not been created.')
else:
ws['B3'] = float(self.entryBags.get())
ws['B4'] = float(self.entryNotes.get())
ws['B5'] = float(self.entry2pound.get())
ws['B6'] = float(self.entry1pound.get())
ws['B7'] = float(self.entry50p.get())
ws['B8'] = float(self.entry20p.get())
ws['B9'] = float(self.entry10p.get())
ws['B10'] = float(self.entry5p.get())
ws['B11'] = float(self.entry2p.get())
ws['B12'] = float(self.entry1p.get())
ws['B14'] = float(self.entryPrevTill.get())
ws['B16'] = float(self.entryCard.get())
ws['B17'] = float(self.entryCash.get())
wb.save(path)
app = xw.App(visible = False)
book = xw.Book(path)
ws2 = book.sheets[0]
total_till = str(ws2.range('B13').value)
till = str(ws2.range('B15').value)
day_total = str(ws2.range('B18').value)
self.lblTotalTillDisplay.configure(text = '£' + total_till)
self.lblLeftTillDisplay.configure(text = '£' + till)
self.lbldaytotal2.configure(text = '£' + day_total)
msgbox.showinfo('', 'Data Submitted.')
book.close()
app.kill()
except IOError:
msgbox.showinfo('Daily Accounts', 'New Day has not been created.')
def email(self):
self.frame.destroy()
app = emailFrame(root)
class emailFrame(tk.Frame):
def __init__(self, master):
self.eframe = ttk.Frame(master)
self.eframe.pack(fill="both", expand = True)
self.entry()
def entry(self):
self.entryemail = tk.Entry(self.eframe, width = 40)
self.entryemail.place(x = 180, y = 20)
if __name__ == "__main__":
root = tk.Tk()
root.geometry("480x480")
root.title("Daily Accounts")
root.resizable(0,0)
app = frame(root)
root.mainloop()
对于长代码感到抱歉，试图尽可能多地获取信息。
答案 0 :(得分：1)
这是使用自定义Entry小部件和类方法的理想位置。自定义小部件将从tk.Entry继承，因此它将具有普通Entry小部件的所有属性：
class Ashki(tk.Entry):
elements = []
def __init__(self, master=None, **kwargs):
tk.Entry.__init__(self, master, **kwargs)
self.elements.append(self)
@classmethod
def all_filled(cls):
return all(entry.get() for entry in cls.elements)
现在，在要包含在支票中的每个位置，请使用Ashki代替tk.Entry。
self.entryBags = Ashki(self.frame, validate = 'key', validatecommand = vcmd)
self.entryBags.place(x = 100, y = 40)
然后在您的检查方法中，您可以使用以下代码：
if not Ashki.all_filled():
msgbox.showinfo('Daily Accounts', 'Enter in to entry fields.')
return # abort this method