在使用命令从按钮调用函数以使用函数插入条目小部件时使用 Tkinter，它表示未定义条目变量
Using Tkinter while calling a function from button using commad to insert in entry widget suing function , it says entry variable is not defined
我得到的错误是
search_box.insert(0,'Enter id')
NameError: name 'search_box' is not defined
用户名是a，密码是a
我尝试将变量 search_box 设置为全局变量，但没有成功
当我点击 voice search button
def id():
search_box.insert(0,'Enter id')
此功能无效，出现名称错误
帮助修复它
这是代码
from tkinter import *
from tkinter import messagebox
root=Tk()
root.geometry('1000x700+122+1')
root.configure(bg='#8644f4')
def id():
search_box.insert(0,'Enter id') #here is the problem , the error says search_box is not defined
#page after login
def page():
global w2
w2=Tk()
w2.geometry('1000x700+122+1')
w2.configure(bg='#8644f4')
# search and register for patient
search_PID = Label(w2, text="Patient ID", bg='#8644f4')
search_PID.place(x=10, y=20)
search_box =Entry(w2)
search_box.place(x=70, y=20)
getinfo = Button(w2, text='Search')
getinfo.place(x=100, y=50)
voice_button = Button(w2, text='Voice Search ', command=id)
voice_button.place(x=85, y=90)
register_button = Button(w2, text='Register')
register_button.place(x=95, y=130)
w2.title('Find And Register Patient Information')
w2.mainloop()
def logcheck():
uid = str(user_entry.get())
psw=str(pw_entry.get())
if uid =='a':
if psw=='a':
messagebox.showinfo('cool', 'login successful')
root.destroy()
page()
else:
messagebox.showinfo('Error', 'Password Wrong')
elif uid=='' and psw=='':
messagebox.showinfo('Error',"All Field are Required")
else:
messagebox.showinfo('Error', 'ID and Password Wrong')
#loginframe
logf=Frame(root,bg='#8081CD')
logf.place(x=250,y=150, height=340, width=500)
logintitle=Label(logf,text='Log in Panel',font=('impact',35,'bold'),bg='#8081CD', fg='darkblue')
logintitle.place(x=119,y=1)
username=Label(logf, text='Username',bg='lightblue')
username.place(x=135,y=110)
user_entry=Entry(logf)
user_entry.place(x=210,y=110)
password=Label(logf, text='Password',bg='lightblue')
password.place(x=135,y=140)
pw_entry=Entry(logf, bg='lightgray',show='*')
pw_entry.place(x=210,y=141)
login=Button(logf,text='Log in',bg='#8644f4',command=logcheck, cursor='hand2')
login.place(x=210,y=180)
root.title('Patient Information')
root.mainloop()```
可以通过在 page() 函数中将 search_box 定义为全局来解决此问题。
global w2, search_box # Added global definition for search_box
并且通过将 id() 函数移动到页面函数下方，它现在似乎可以正常工作了。
具有这些更改的完整代码如下 -:
from tkinter import *
from tkinter import messagebox
root=Tk()
root.geometry('1000x700+122+1')
root.configure(bg='#8644f4')
#page after login
def page():
global w2, search_box # Added global definition for search_box
w2=Tk()
w2.geometry('1000x700+122+1')
w2.configure(bg='#8644f4')
# search and register for patient
search_PID = Label(w2, text="Patient ID", bg='#8644f4')
search_PID.place(x=10, y=20)
search_box =Entry(w2)
search_box.place(x=70, y=20)
getinfo = Button(w2, text='Search')
getinfo.place(x=100, y=50)
voice_button = Button(w2, text='Voice Search ', command=id)
voice_button.place(x=85, y=90)
register_button = Button(w2, text='Register')
register_button.place(x=95, y=130)
w2.title('Find And Register Patient Information')
w2.mainloop()
# shifted this function below
def id():
global search_box
search_box.insert(0,'Enter id') #here is the problem , the error says search_box is not defined
def logcheck():
uid = str(user_entry.get())
psw=str(pw_entry.get())
if uid =='a':
if psw=='a':
messagebox.showinfo('cool', 'login successful')
root.destroy()
page()
else:
messagebox.showinfo('Error', 'Password Wrong')
elif uid=='' and psw=='':
messagebox.showinfo('Error',"All Field are Required")
else:
messagebox.showinfo('Error', 'ID and Password Wrong')
#loginframe
logf=Frame(root,bg='#8081CD')
logf.place(x=250,y=150, height=340, width=500)
logintitle=Label(logf,text='Log in Panel',font=('impact',35,'bold'),bg='#8081CD', fg='darkblue')
logintitle.place(x=119,y=1)
username=Label(logf, text='Username',bg='lightblue')
username.place(x=135,y=110)
user_entry=Entry(logf)
user_entry.place(x=210,y=110)
password=Label(logf, text='Password',bg='lightblue')
password.place(x=135,y=140)
pw_entry=Entry(logf, bg='lightgray',show='*')
pw_entry.place(x=210,y=141)
login=Button(logf,text='Log in',bg='#8644f4',command=logcheck, cursor='hand2')
login.place(x=210,y=180)
root.title('Patient Information')
root.mainloop()
注意： 此外，由于 id 是 python 中的现有关键字，尽管它还没有抛出任何错误，但建议您更改名称您的函数的名称可能为 id_ 或其他名称，因为 id 也是一个 built-in 函数，并且定义另一个 id 函数会覆盖 built-in id 函数，该函数可能或可能不会导致开发过程出错。即使没有错误，使代码更具可读性通常也是一个好习惯。
我得到的错误是
search_box.insert(0,'Enter id') NameError: name 'search_box' is not defined
用户名是a，密码是a
我尝试将变量 search_box 设置为全局变量，但没有成功
当我点击 voice search button
def id():
search_box.insert(0,'Enter id')
此功能无效，出现名称错误 帮助修复它
这是代码
from tkinter import *
from tkinter import messagebox
root=Tk()
root.geometry('1000x700+122+1')
root.configure(bg='#8644f4')
def id():
search_box.insert(0,'Enter id') #here is the problem , the error says search_box is not defined
#page after login
def page():
global w2
w2=Tk()
w2.geometry('1000x700+122+1')
w2.configure(bg='#8644f4')
# search and register for patient
search_PID = Label(w2, text="Patient ID", bg='#8644f4')
search_PID.place(x=10, y=20)
search_box =Entry(w2)
search_box.place(x=70, y=20)
getinfo = Button(w2, text='Search')
getinfo.place(x=100, y=50)
voice_button = Button(w2, text='Voice Search ', command=id)
voice_button.place(x=85, y=90)
register_button = Button(w2, text='Register')
register_button.place(x=95, y=130)
w2.title('Find And Register Patient Information')
w2.mainloop()
def logcheck():
uid = str(user_entry.get())
psw=str(pw_entry.get())
if uid =='a':
if psw=='a':
messagebox.showinfo('cool', 'login successful')
root.destroy()
page()
else:
messagebox.showinfo('Error', 'Password Wrong')
elif uid=='' and psw=='':
messagebox.showinfo('Error',"All Field are Required")
else:
messagebox.showinfo('Error', 'ID and Password Wrong')
#loginframe
logf=Frame(root,bg='#8081CD')
logf.place(x=250,y=150, height=340, width=500)
logintitle=Label(logf,text='Log in Panel',font=('impact',35,'bold'),bg='#8081CD', fg='darkblue')
logintitle.place(x=119,y=1)
username=Label(logf, text='Username',bg='lightblue')
username.place(x=135,y=110)
user_entry=Entry(logf)
user_entry.place(x=210,y=110)
password=Label(logf, text='Password',bg='lightblue')
password.place(x=135,y=140)
pw_entry=Entry(logf, bg='lightgray',show='*')
pw_entry.place(x=210,y=141)
login=Button(logf,text='Log in',bg='#8644f4',command=logcheck, cursor='hand2')
login.place(x=210,y=180)
root.title('Patient Information')
root.mainloop()```
可以通过在 page() 函数中将 search_box 定义为全局来解决此问题。
global w2, search_box # Added global definition for search_box
并且通过将 id() 函数移动到页面函数下方，它现在似乎可以正常工作了。
具有这些更改的完整代码如下 -:
from tkinter import *
from tkinter import messagebox
root=Tk()
root.geometry('1000x700+122+1')
root.configure(bg='#8644f4')
#page after login
def page():
global w2, search_box # Added global definition for search_box
w2=Tk()
w2.geometry('1000x700+122+1')
w2.configure(bg='#8644f4')
# search and register for patient
search_PID = Label(w2, text="Patient ID", bg='#8644f4')
search_PID.place(x=10, y=20)
search_box =Entry(w2)
search_box.place(x=70, y=20)
getinfo = Button(w2, text='Search')
getinfo.place(x=100, y=50)
voice_button = Button(w2, text='Voice Search ', command=id)
voice_button.place(x=85, y=90)
register_button = Button(w2, text='Register')
register_button.place(x=95, y=130)
w2.title('Find And Register Patient Information')
w2.mainloop()
# shifted this function below
def id():
global search_box
search_box.insert(0,'Enter id') #here is the problem , the error says search_box is not defined
def logcheck():
uid = str(user_entry.get())
psw=str(pw_entry.get())
if uid =='a':
if psw=='a':
messagebox.showinfo('cool', 'login successful')
root.destroy()
page()
else:
messagebox.showinfo('Error', 'Password Wrong')
elif uid=='' and psw=='':
messagebox.showinfo('Error',"All Field are Required")
else:
messagebox.showinfo('Error', 'ID and Password Wrong')
#loginframe
logf=Frame(root,bg='#8081CD')
logf.place(x=250,y=150, height=340, width=500)
logintitle=Label(logf,text='Log in Panel',font=('impact',35,'bold'),bg='#8081CD', fg='darkblue')
logintitle.place(x=119,y=1)
username=Label(logf, text='Username',bg='lightblue')
username.place(x=135,y=110)
user_entry=Entry(logf)
user_entry.place(x=210,y=110)
password=Label(logf, text='Password',bg='lightblue')
password.place(x=135,y=140)
pw_entry=Entry(logf, bg='lightgray',show='*')
pw_entry.place(x=210,y=141)
login=Button(logf,text='Log in',bg='#8644f4',command=logcheck, cursor='hand2')
login.place(x=210,y=180)
root.title('Patient Information')
root.mainloop()
注意： 此外，由于 id 是 python 中的现有关键字，尽管它还没有抛出任何错误，但建议您更改名称您的函数的名称可能为 id_ 或其他名称，因为 id 也是一个 built-in 函数，并且定义另一个 id 函数会覆盖 built-in id 函数，该函数可能或可能不会导致开发过程出错。即使没有错误，使代码更具可读性通常也是一个好习惯。