Python: Type error while using exec for creating TKINTER Checkbutton

-1

I want to create a checkbox using a loop(using dropbox files_list_folder('').entries) and get the text & status if it is checked, but it is showing TypeError and the problem is i need to assign var to get status of the checkbutton:

for ii,j in zip(range(len(files_list)),range(1,len(files_list)+1)):

    exec("var%i=StringVar()"%j)

    exec("ch%i = Checkbutton(text=files_list[ii],variable=var%i)"%j%j)

    exec("ch%i.grid(row=ii, column=0, sticky=W)"%j)

asked Nov 13 '18 at 9:52

bala bharath

1415

What's the TypeError you're seeing?

– kingJulian
Nov 13 '18 at 10:23

TypeError: not enough arguments for format string

– bala bharath
Nov 13 '18 at 10:33

1

You should never use exec like this, it makes your code nearly impossible to read and debug. Store your widgets in a dictionary or list instead. see How do I create a variable number of variables

– Bryan Oakley
Nov 13 '18 at 11:33

yes i understand, but whenever it is checked i need its text, thats y i need a var=StringVar() to be asigned to every checkbutton i create

– bala bharath
Nov 13 '18 at 11:58

I think it's because you're using % as a percent character in your format string. I believe you need to use %% instead.

– kingJulian
Nov 13 '18 at 12:07

|
show 2 more comments

-1

for ii,j in zip(range(len(files_list)),range(1,len(files_list)+1)):

    exec("var%i=StringVar()"%j)

    exec("ch%i = Checkbutton(text=files_list[ii],variable=var%i)"%j%j)

    exec("ch%i.grid(row=ii, column=0, sticky=W)"%j)

asked Nov 13 '18 at 9:52

bala bharath

1415

What's the TypeError you're seeing?

– kingJulian
Nov 13 '18 at 10:23

TypeError: not enough arguments for format string

– bala bharath
Nov 13 '18 at 10:33

1

You should never use exec like this, it makes your code nearly impossible to read and debug. Store your widgets in a dictionary or list instead. see How do I create a variable number of variables

– Bryan Oakley
Nov 13 '18 at 11:33

yes i understand, but whenever it is checked i need its text, thats y i need a var=StringVar() to be asigned to every checkbutton i create

– bala bharath
Nov 13 '18 at 11:58

I think it's because you're using % as a percent character in your format string. I believe you need to use %% instead.

– kingJulian
Nov 13 '18 at 12:07

|
show 2 more comments

-1

for ii,j in zip(range(len(files_list)),range(1,len(files_list)+1)):

    exec("var%i=StringVar()"%j)

    exec("ch%i = Checkbutton(text=files_list[ii],variable=var%i)"%j%j)

    exec("ch%i.grid(row=ii, column=0, sticky=W)"%j)

asked Nov 13 '18 at 9:52

bala bharath

1415

for ii,j in zip(range(len(files_list)),range(1,len(files_list)+1)):

    exec("var%i=StringVar()"%j)

    exec("ch%i = Checkbutton(text=files_list[ii],variable=var%i)"%j%j)

    exec("ch%i.grid(row=ii, column=0, sticky=W)"%j)

python-3.x tkinter

asked Nov 13 '18 at 9:52

bala bharath

1415

asked Nov 13 '18 at 9:52

bala bharath

1415

asked Nov 13 '18 at 9:52

bala bharath

1415

asked Nov 13 '18 at 9:52

bala bharath

1415

asked Nov 13 '18 at 9:52

bala bharath

1415

What's the TypeError you're seeing?

– kingJulian
Nov 13 '18 at 10:23

TypeError: not enough arguments for format string

– bala bharath
Nov 13 '18 at 10:33

1

You should never use exec like this, it makes your code nearly impossible to read and debug. Store your widgets in a dictionary or list instead. see How do I create a variable number of variables

– Bryan Oakley
Nov 13 '18 at 11:33

yes i understand, but whenever it is checked i need its text, thats y i need a var=StringVar() to be asigned to every checkbutton i create

– bala bharath
Nov 13 '18 at 11:58

I think it's because you're using % as a percent character in your format string. I believe you need to use %% instead.

– kingJulian
Nov 13 '18 at 12:07

|
show 2 more comments

What's the TypeError you're seeing?

– kingJulian
Nov 13 '18 at 10:23

TypeError: not enough arguments for format string

– bala bharath
Nov 13 '18 at 10:33

1

You should never use exec like this, it makes your code nearly impossible to read and debug. Store your widgets in a dictionary or list instead. see How do I create a variable number of variables

– Bryan Oakley
Nov 13 '18 at 11:33

yes i understand, but whenever it is checked i need its text, thats y i need a var=StringVar() to be asigned to every checkbutton i create

– bala bharath
Nov 13 '18 at 11:58

I think it's because you're using % as a percent character in your format string. I believe you need to use %% instead.

– kingJulian
Nov 13 '18 at 12:07

What's the TypeError you're seeing?

– kingJulian
Nov 13 '18 at 10:23

TypeError: not enough arguments for format string

– bala bharath
Nov 13 '18 at 10:33

You should never use exec like this, it makes your code nearly impossible to read and debug. Store your widgets in a dictionary or list instead. see How do I create a variable number of variables

– Bryan Oakley
Nov 13 '18 at 11:33

yes i understand, but whenever it is checked i need its text, thats y i need a var=StringVar() to be asigned to every checkbutton i create

– bala bharath
Nov 13 '18 at 11:58

I think it's because you're using % as a percent character in your format string. I believe you need to use %% instead.

– kingJulian
Nov 13 '18 at 12:07

|
show 2 more comments

1 Answer
1

active

oldest

votes

You should avoid the use of exec and eval whenever possible. These are very unsafe to someone who does not fully understand what they can do. Both have a severe risk of code injection.

You can use list to get results of each Checkbutton selection. We can store the StringVar() in a list and then call that value when button is checked or unchecked.

import tkinter as tk





root = tk.Tk()



value_list = ['One', 'Two', 'Three', 'Four']

var_list = 



def print_results_from_selection(i):

    print("{}: {}".format(value_list[i], var_list[i].get()))



def generate_buttons():

    for i in range(len(value_list)):

        var_list.append(tk.StringVar())

        var_list[-1].set(0)

        tk.Checkbutton(root, text=value_list[i], variable=var_list[-1],

                       command=lambda i=i: print_results_from_selection(i),

                       onvalue=1, offvalue=0).grid(row=i, column=0, sticky="w")



generate_buttons()

root.mainloop()

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

add a comment |

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1 Answer
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active

oldest

votes

1 Answer
1

active

oldest

votes

You should avoid the use of exec and eval whenever possible. These are very unsafe to someone who does not fully understand what they can do. Both have a severe risk of code injection.

You can use list to get results of each Checkbutton selection. We can store the StringVar() in a list and then call that value when button is checked or unchecked.

import tkinter as tk





root = tk.Tk()



value_list = ['One', 'Two', 'Three', 'Four']

var_list = 



def print_results_from_selection(i):

    print("{}: {}".format(value_list[i], var_list[i].get()))



def generate_buttons():

    for i in range(len(value_list)):

        var_list.append(tk.StringVar())

        var_list[-1].set(0)

        tk.Checkbutton(root, text=value_list[i], variable=var_list[-1],

                       command=lambda i=i: print_results_from_selection(i),

                       onvalue=1, offvalue=0).grid(row=i, column=0, sticky="w")



generate_buttons()

root.mainloop()

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

add a comment |

You should avoid the use of exec and eval whenever possible. These are very unsafe to someone who does not fully understand what they can do. Both have a severe risk of code injection.

You can use list to get results of each Checkbutton selection. We can store the StringVar() in a list and then call that value when button is checked or unchecked.

import tkinter as tk





root = tk.Tk()



value_list = ['One', 'Two', 'Three', 'Four']

var_list = 



def print_results_from_selection(i):

    print("{}: {}".format(value_list[i], var_list[i].get()))



def generate_buttons():

    for i in range(len(value_list)):

        var_list.append(tk.StringVar())

        var_list[-1].set(0)

        tk.Checkbutton(root, text=value_list[i], variable=var_list[-1],

                       command=lambda i=i: print_results_from_selection(i),

                       onvalue=1, offvalue=0).grid(row=i, column=0, sticky="w")



generate_buttons()

root.mainloop()

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

add a comment |

You should avoid the use of exec and eval whenever possible. These are very unsafe to someone who does not fully understand what they can do. Both have a severe risk of code injection.

You can use list to get results of each Checkbutton selection. We can store the StringVar() in a list and then call that value when button is checked or unchecked.

import tkinter as tk





root = tk.Tk()



value_list = ['One', 'Two', 'Three', 'Four']

var_list = 



def print_results_from_selection(i):

    print("{}: {}".format(value_list[i], var_list[i].get()))



def generate_buttons():

    for i in range(len(value_list)):

        var_list.append(tk.StringVar())

        var_list[-1].set(0)

        tk.Checkbutton(root, text=value_list[i], variable=var_list[-1],

                       command=lambda i=i: print_results_from_selection(i),

                       onvalue=1, offvalue=0).grid(row=i, column=0, sticky="w")



generate_buttons()

root.mainloop()

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

You should avoid the use of exec and eval whenever possible. These are very unsafe to someone who does not fully understand what they can do. Both have a severe risk of code injection.

You can use list to get results of each Checkbutton selection. We can store the StringVar() in a list and then call that value when button is checked or unchecked.

import tkinter as tk





root = tk.Tk()



value_list = ['One', 'Two', 'Three', 'Four']

var_list = 



def print_results_from_selection(i):

    print("{}: {}".format(value_list[i], var_list[i].get()))



def generate_buttons():

    for i in range(len(value_list)):

        var_list.append(tk.StringVar())

        var_list[-1].set(0)

        tk.Checkbutton(root, text=value_list[i], variable=var_list[-1],

                       command=lambda i=i: print_results_from_selection(i),

                       onvalue=1, offvalue=0).grid(row=i, column=0, sticky="w")



generate_buttons()

root.mainloop()

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

answered Nov 13 '18 at 13:55

Mike - SMT

9,39921234

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

add a comment |

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

Thanks you so much ! now its working like a charm

– bala bharath
Nov 13 '18 at 15:59

@balabharath glad to help. Be sure to select the check button next to my answer if it solved your problem. This will let everyone know you have got a solution to your question.

– Mike - SMT
Nov 13 '18 at 16:04

add a comment |

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