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18

7

I'm trying to use an Entry field to get manual input, and then work with that data.

All sources I've found claim I should use the get() function, but I haven't found a simple working mini example yet, and I can't get it to work.

I hope someone can tel me what I'm doing wrong. Here's a mini file:

from tkinter import *


master = Tk()

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

content = entry.get()
print(content) # does not work

mainloop()

This gives me an Entry field I can type in, but I can't do anything with the data once it's typed in.

I suspect my code doesn't work because initially, entry is empty. But then how do I access input data once it has been typed in?

python python-3.x tkinter get tkinter-entry

share|improve this question

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In your example, what exactly are you expecting? You haven't given the entry widget any text before you call get so of course it returns an empty string.
  
  – Bryan Oakley
  May 23 '12 at 22:51
  
  

  
  
  
  

add a comment | 

18

7

I'm trying to use an Entry field to get manual input, and then work with that data.

All sources I've found claim I should use the get() function, but I haven't found a simple working mini example yet, and I can't get it to work.

I hope someone can tel me what I'm doing wrong. Here's a mini file:

from tkinter import *


master = Tk()

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

content = entry.get()
print(content) # does not work

mainloop()

This gives me an Entry field I can type in, but I can't do anything with the data once it's typed in.

I suspect my code doesn't work because initially, entry is empty. But then how do I access input data once it has been typed in?

python python-3.x tkinter get tkinter-entry

share|improve this question

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In your example, what exactly are you expecting? You haven't given the entry widget any text before you call get so of course it returns an empty string.
  
  – Bryan Oakley
  May 23 '12 at 22:51
  
  

  
  
  
  

add a comment | 

I'm trying to use an Entry field to get manual input, and then work with that data.

All sources I've found claim I should use the get() function, but I haven't found a simple working mini example yet, and I can't get it to work.

I hope someone can tel me what I'm doing wrong. Here's a mini file:

from tkinter import *


master = Tk()

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

content = entry.get()
print(content) # does not work

mainloop()

This gives me an Entry field I can type in, but I can't do anything with the data once it's typed in.

I suspect my code doesn't work because initially, entry is empty. But then how do I access input data once it has been typed in?

python python-3.x tkinter get tkinter-entry

share|improve this question

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

from tkinter import *


master = Tk()

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

content = entry.get()
print(content) # does not work

mainloop()

share|improve this question

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

share|improve this question

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

edited Aug 31 '17 at 18:36

Cœur

21.3k1010 gold badges121121 silver badges168168 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

2,50155 gold badges2727 silver badges3838 bronze badges

asked May 23 '12 at 20:12

CodingCatCodingCat

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4 Answers
4

active

oldest

votes

32

It looks like you may be confused as to when commands are run. In your example, you are calling the get method before the GUI has a chance to be displayed on the screen (which happens after you call mainloop.

Try adding a button that calls the get method. This is much easier if you write your application as a class. For example:

import tkinter as tk

class SampleApp(tk.Tk):
 def __init__(self):
 tk.Tk.__init__(self)
 self.entry = tk.Entry(self)
 self.button = tk.Button(self, text="Get", command=self.on_button)
 self.button.pack()
 self.entry.pack()

 def on_button(self):
 print(self.entry.get())

app = SampleApp()
app.mainloop()

Run the program, type into the entry widget, then click on the button.

share|improve this answer

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah, I see. I'm not really firm on classes yet (still very much a beginner at programming in general), but I see the problem. I'll just make an "Analyze!" button and put the get()-function in there, that should work. Thank you!
  
  – CodingCat
  May 24 '12 at 7:21
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You might need to add self as a parameter while calling the superclass init: tk.Tk.__init__(self). Otherwise, very useful example!
  
  – Deep-B
  Mar 22 '14 at 23:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deep-B: thanks for catching that.
  
  – Bryan Oakley
  Mar 23 '14 at 0:37
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And, er, you misspelt app in the last line. <_<"
  
  – Deep-B
  Mar 23 '14 at 0:41
  

  
  
  
  

add a comment | 

7

You could also use a StringVar variable, even if it's not strictly necessary:

v = StringVar()

e = Entry(master, textvariable=v)
e.pack()

v.set("a default value")
s = v.get()

For more information, see this page on effbot.org.

share|improve this answer

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  A StringVar isn't necessary, strictly speaking. They are handy, but for this question they are completely superfluous.
  
  – Bryan Oakley
  May 23 '12 at 23:03
  
  

  
  
  
  

add a comment | 

3

A simple example without classes:

from tkinter import * 
master = Tk()

# Create this method before you create the entry
def return_entry(en):
 """Gets and prints the content of the entry"""
 content = entry.get()
 print(content) 

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

# Connect the entry with the return button
entry.bind('<Return>', return_entry) 

mainloop()

share|improve this answer

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

add a comment | 

1

*

master = Tk()
entryb1 = StringVar

Label(master, text="Input: ").grid(row=0, sticky=W)

Entry(master, textvariable=entryb1).grid(row=1, column=1)

b1 = Button(master, text="continue", command=print_content)
b1.grid(row=2, column=1)

def print_content():
 global entryb1
 content = entryb1.get()
 print(content)

master.mainloop()

What you did wrong was not put it inside a Define function then you hadn't used the .get function with the textvariable you had set.

share|improve this answer

edited Mar 23 at 5:06

user11093202

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges

add a comment | 

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32

It looks like you may be confused as to when commands are run. In your example, you are calling the get method before the GUI has a chance to be displayed on the screen (which happens after you call mainloop.

Try adding a button that calls the get method. This is much easier if you write your application as a class. For example:

import tkinter as tk

class SampleApp(tk.Tk):
 def __init__(self):
 tk.Tk.__init__(self)
 self.entry = tk.Entry(self)
 self.button = tk.Button(self, text="Get", command=self.on_button)
 self.button.pack()
 self.entry.pack()

 def on_button(self):
 print(self.entry.get())

app = SampleApp()
app.mainloop()

Run the program, type into the entry widget, then click on the button.

share|improve this answer

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah, I see. I'm not really firm on classes yet (still very much a beginner at programming in general), but I see the problem. I'll just make an "Analyze!" button and put the get()-function in there, that should work. Thank you!
  
  – CodingCat
  May 24 '12 at 7:21
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You might need to add self as a parameter while calling the superclass init: tk.Tk.__init__(self). Otherwise, very useful example!
  
  – Deep-B
  Mar 22 '14 at 23:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deep-B: thanks for catching that.
  
  – Bryan Oakley
  Mar 23 '14 at 0:37
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And, er, you misspelt app in the last line. <_<"
  
  – Deep-B
  Mar 23 '14 at 0:41
  

  
  
  
  

add a comment | 

32

It looks like you may be confused as to when commands are run. In your example, you are calling the get method before the GUI has a chance to be displayed on the screen (which happens after you call mainloop.

Try adding a button that calls the get method. This is much easier if you write your application as a class. For example:

import tkinter as tk

class SampleApp(tk.Tk):
 def __init__(self):
 tk.Tk.__init__(self)
 self.entry = tk.Entry(self)
 self.button = tk.Button(self, text="Get", command=self.on_button)
 self.button.pack()
 self.entry.pack()

 def on_button(self):
 print(self.entry.get())

app = SampleApp()
app.mainloop()

Run the program, type into the entry widget, then click on the button.

share|improve this answer

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah, I see. I'm not really firm on classes yet (still very much a beginner at programming in general), but I see the problem. I'll just make an "Analyze!" button and put the get()-function in there, that should work. Thank you!
  
  – CodingCat
  May 24 '12 at 7:21
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You might need to add self as a parameter while calling the superclass init: tk.Tk.__init__(self). Otherwise, very useful example!
  
  – Deep-B
  Mar 22 '14 at 23:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deep-B: thanks for catching that.
  
  – Bryan Oakley
  Mar 23 '14 at 0:37
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And, er, you misspelt app in the last line. <_<"
  
  – Deep-B
  Mar 23 '14 at 0:41
  

  
  
  
  

add a comment | 

It looks like you may be confused as to when commands are run. In your example, you are calling the get method before the GUI has a chance to be displayed on the screen (which happens after you call mainloop.

Try adding a button that calls the get method. This is much easier if you write your application as a class. For example:

import tkinter as tk

class SampleApp(tk.Tk):
 def __init__(self):
 tk.Tk.__init__(self)
 self.entry = tk.Entry(self)
 self.button = tk.Button(self, text="Get", command=self.on_button)
 self.button.pack()
 self.entry.pack()

 def on_button(self):
 print(self.entry.get())

app = SampleApp()
app.mainloop()

Run the program, type into the entry widget, then click on the button.

share|improve this answer

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

import tkinter as tk

class SampleApp(tk.Tk):
 def __init__(self):
 tk.Tk.__init__(self)
 self.entry = tk.Entry(self)
 self.button = tk.Button(self, text="Get", command=self.on_button)
 self.button.pack()
 self.entry.pack()

 def on_button(self):
 print(self.entry.get())

app = SampleApp()
app.mainloop()

share|improve this answer

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

edited Mar 9 '15 at 23:15

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

answered May 23 '12 at 23:00

Bryan OakleyBryan Oakley

230k2222 gold badges307307 silver badges453453 bronze badges

7

You could also use a StringVar variable, even if it's not strictly necessary:

v = StringVar()

e = Entry(master, textvariable=v)
e.pack()

v.set("a default value")
s = v.get()

For more information, see this page on effbot.org.

share|improve this answer

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  A StringVar isn't necessary, strictly speaking. They are handy, but for this question they are completely superfluous.
  
  – Bryan Oakley
  May 23 '12 at 23:03
  
  

  
  
  
  

add a comment | 

7

You could also use a StringVar variable, even if it's not strictly necessary:

v = StringVar()

e = Entry(master, textvariable=v)
e.pack()

v.set("a default value")
s = v.get()

For more information, see this page on effbot.org.

share|improve this answer

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  A StringVar isn't necessary, strictly speaking. They are handy, but for this question they are completely superfluous.
  
  – Bryan Oakley
  May 23 '12 at 23:03
  
  

  
  
  
  

add a comment | 

You could also use a StringVar variable, even if it's not strictly necessary:

v = StringVar()

e = Entry(master, textvariable=v)
e.pack()

v.set("a default value")
s = v.get()

For more information, see this page on effbot.org.

share|improve this answer

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

v = StringVar()

e = Entry(master, textvariable=v)
e.pack()

v.set("a default value")
s = v.get()

share|improve this answer

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

edited Mar 9 '15 at 21:16

nbro

6,0801010 gold badges5454 silver badges104104 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

answered May 23 '12 at 20:17

zortaconzortacon

48744 silver badges1313 bronze badges

3

A simple example without classes:

from tkinter import * 
master = Tk()

# Create this method before you create the entry
def return_entry(en):
 """Gets and prints the content of the entry"""
 content = entry.get()
 print(content) 

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

# Connect the entry with the return button
entry.bind('<Return>', return_entry) 

mainloop()

share|improve this answer

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

add a comment | 

3

A simple example without classes:

from tkinter import * 
master = Tk()

# Create this method before you create the entry
def return_entry(en):
 """Gets and prints the content of the entry"""
 content = entry.get()
 print(content) 

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

# Connect the entry with the return button
entry.bind('<Return>', return_entry) 

mainloop()

share|improve this answer

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

add a comment | 

A simple example without classes:

from tkinter import * 
master = Tk()

# Create this method before you create the entry
def return_entry(en):
 """Gets and prints the content of the entry"""
 content = entry.get()
 print(content) 

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

# Connect the entry with the return button
entry.bind('<Return>', return_entry) 

mainloop()

share|improve this answer

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

from tkinter import * 
master = Tk()

# Create this method before you create the entry
def return_entry(en):
 """Gets and prints the content of the entry"""
 content = entry.get()
 print(content) 

Label(master, text="Input: ").grid(row=0, sticky=W)

entry = Entry(master)
entry.grid(row=0, column=1)

# Connect the entry with the return button
entry.bind('<Return>', return_entry) 

mainloop()

share|improve this answer

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

answered Sep 12 '16 at 15:20

Marios TheofanidisMarios Theofanidis

3133 bronze badges

1

*

master = Tk()
entryb1 = StringVar

Label(master, text="Input: ").grid(row=0, sticky=W)

Entry(master, textvariable=entryb1).grid(row=1, column=1)

b1 = Button(master, text="continue", command=print_content)
b1.grid(row=2, column=1)

def print_content():
 global entryb1
 content = entryb1.get()
 print(content)

master.mainloop()

What you did wrong was not put it inside a Define function then you hadn't used the .get function with the textvariable you had set.

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edited Mar 23 at 5:06

user11093202

answered Mar 2 '16 at 21:15

rodude123rodude123

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add a comment | 

1

*

master = Tk()
entryb1 = StringVar

Label(master, text="Input: ").grid(row=0, sticky=W)

Entry(master, textvariable=entryb1).grid(row=1, column=1)

b1 = Button(master, text="continue", command=print_content)
b1.grid(row=2, column=1)

def print_content():
 global entryb1
 content = entryb1.get()
 print(content)

master.mainloop()

What you did wrong was not put it inside a Define function then you hadn't used the .get function with the textvariable you had set.

share|improve this answer

edited Mar 23 at 5:06

user11093202

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges

add a comment | 

*

master = Tk()
entryb1 = StringVar

Label(master, text="Input: ").grid(row=0, sticky=W)

Entry(master, textvariable=entryb1).grid(row=1, column=1)

b1 = Button(master, text="continue", command=print_content)
b1.grid(row=2, column=1)

def print_content():
 global entryb1
 content = entryb1.get()
 print(content)

master.mainloop()

What you did wrong was not put it inside a Define function then you hadn't used the .get function with the textvariable you had set.

share|improve this answer

edited Mar 23 at 5:06

user11093202

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges

master = Tk()
entryb1 = StringVar

Label(master, text="Input: ").grid(row=0, sticky=W)

Entry(master, textvariable=entryb1).grid(row=1, column=1)

b1 = Button(master, text="continue", command=print_content)
b1.grid(row=2, column=1)

def print_content():
 global entryb1
 content = entryb1.get()
 print(content)

master.mainloop()

share|improve this answer

edited Mar 23 at 5:06

user11093202

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges

answered Mar 2 '16 at 21:15

rodude123rodude123

8011 silver badge1515 bronze badges