Tkinter: scrollable Frame in Canvas: Auto-resize binding error - python

This script when run, opens a window that is divided into 3 frames:
A big frame into which data will be shown (label widgets).
A smaller frame underneath it with user input widgets.
A small frame in the bottom-right corner with a textbox widget.
The big frame will have a lot of data (= label-widgets) so I need it to be scrollable (vertically).
This I have done by creating a canvas widget alonside a scrollbar widget. In the canvas, a frame widget is placed.
Everything seems to be working, however my resizing function does not.
My frame widget does not get its dimensions updated! This is probably because of an error that I can't manage to fix.
Fundamental question:
The script gives an error on the "lambda: resize_frame(self)" command on line 43. How do i fix this?
Side-note: My issue probably has more to do with an improper binding on the canvas widget. Because I'm not sure I wanted to give enough context (script).
Many thanks in advance.
from Tkinter import *
import math
class Processing(Toplevel):
def __init__(self, master, *args, **kwargs):
Toplevel.__init__(self, master)
self.master = master
self.title("Process Window")
for r in range(6):
self.rowconfigure(r, weight = 1)
for c in range(4):
self.columnconfigure(c, weight = 1)
### WINDOW size and position definitions ###
ScreenSizeX = master.winfo_screenwidth()
ScreenSizeY = ( master.winfo_screenheight() - 75 ) #about 75pixels for taskbar on bottom of screen (Windows)
ScreenRatio = 0.9
FrameSizeX = int(ScreenSizeX * ScreenRatio)
FrameSizeY = int(ScreenSizeY * ScreenRatio)
FramePosX = (ScreenSizeX - FrameSizeX)/2
FramePosY = (ScreenSizeY - FrameSizeY)/2
self.geometry("%sx%s+%s+%s"%(FrameSizeX,FrameSizeY,FramePosX,FramePosY))
### Creating 3 "sub-frames" ###
# Frame 1 - canvas container with scrollbar#
self.Canvas1 = Canvas(self, bg = "white")
self.Canvas1.grid(row = 0, column = 0, rowspan = 5, columnspan = 4, sticky = N+E+S+W)
self.Canvas1.rowconfigure(1, weight = 1)
self.Canvas1.columnconfigure(1, weight = 1)
self.myscrollbar=Scrollbar(self, orient = "vertical", command = self.Canvas1.yview)
self.Canvas1.configure(yscrollcommand = self.myscrollbar.set)
self.myscrollbar.grid(row = 0, column = 4, rowspan = 5, sticky = N+S)
# Frame 1 - Frame widget in canvas #
self.Frame1 = Frame(self.Canvas1, bg = "white")
self.Frame1.rowconfigure(0, weight = 1)
for c in range(2):
self.Frame1.columnconfigure(1 + (2 * c), weight = 1)#1,3 - columns for small icons in the future
for cb in range(3):
self.Frame1.columnconfigure((cb * 2), weight = 9)#0,2,4 - columns for data
self.CFrame1 = self.Canvas1.create_window(0, 0, window = self.Frame1, width = FrameSizeX, anchor = N+W)
self.Canvas1.bind("<Configure>", lambda: resize_frame(self)) # !!!!! Doesn't work & gives error !!!!!! #
self.Frame1.bind("<Configure>", lambda: scrollevent(self))
self.Canvas1.config(scrollregion=self.Canvas1.bbox("all"))
# Frame 2 #
self.Frame2 = Frame(self, bg= "yellow")
self.Frame2.grid(row = 5, column = 0, rowspan = 1, columnspan = 3, sticky = W+E+N+S)
for r in range(3):
self.Frame2.rowconfigure(r, weight=1)
for c in range(3):
self.Frame2.columnconfigure(c, weight = 1)
# Frame 3 #
self.Frame3 = Frame(self)
self.Frame3.grid(row = 5, column = 3, rowspan = 1, columnspan = 2, sticky = W+E+N+S)
self.Frame3.rowconfigure(0, weight = 1)
self.Frame3.columnconfigure(0, weight = 1)
# Propagation #
#self.grid_propagate(False) # All widgets (the 3 subframes) need to fit in Toplevel window. Minimal window size will be implemented later.
self.Canvas1.grid_propagate(False) # canvas works with scrollbar, widgets dont need to fit in window size.
#self.Frame1.grid_propagate(False) # Frame1 should resize to hold all data (label-widgets)
self.Frame2.grid_propagate(False) # fixed frame dimensions
self.Frame3.grid_propagate(False) # fixed textbox dimensions
self.Frame1.update_idletasks() # just to make sure
### Widgets for the multiple frames ###
# Frame1 - further populated by button command in frame 2#
self.lblaa = Label(self.Frame1, bg="white", text = "Processing...", justify = "left")
self.lblaa.grid(row = 0, column = 0, sticky = N+W)
self.LSlabelsr = []
self.LSlabelsa = []
self.LSlabelsb = []
# Frame 2 #
self.Wbuttontest=Button(self.Frame2, text="Start listing test", command = lambda: refresh(self))
self.Wbuttontest.grid(row = 0, column = 0, columnspan = 3)
self.Wentry = Entry(self.Frame2)
self.Wentry.grid(row = 2, column = 0, columnspan = 3, sticky = E+W, padx = 10)
self.Wentry.delete(0, END)
self.Wentry.insert(0, "user input here")
# Frame3 #
self.Wtext = Text(self.Frame3)
self.Wscrollb = Scrollbar(self.Frame3)
self.Wscrollb.config(command = self.Wtext.yview)
self.Wtext.config(yscrollcommand = self.Wscrollb.set)
self.Wtext.grid(row = 0, column = 0, sticky = N+E+W+S)
### Test-Lists ### Last character in the left column is "ez" !! ###
self.LSa = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
self.LSb = [1, 2, 3, 4, 66, 6, 7, 8, 9, 67, 11, 12, 13, 14, 68]
self.LSr = []
ib = 0
prefix = ""
for i in range(104):
if ib > 25:
prefix = chr(ord("a") + (i/ib - 1))
ib = 0
else:
pass
self.LSr.append(prefix + chr(97+ib))
ib += 1
### FUNCTIONS ###
def resize_frame(self, event):
self.Canvas1.itemconfig(self.CFrame1, width = e.width) #height of frame should depend on the contents.
def scrollevent(event):
self.Canvas1.configure(scrollregion=self.Canvas1.bbox("all"),width=200,height=200)
def refresh(self): ### Button-command: data will be shown ###
if self.lblaa.winfo_exists() == 1:
self.lblaa.destroy()
for i in range(len(self.LSr)):
self.Frame1.rowconfigure(i, weight = 0)
del self.LSlabelsr[:] # remove any previous labels from if the callback was called before
del self.LSlabelsa[:] # remove any previous labels from if the callback was called before
del self.LSlabelsb[:] # remove any previous labels from if the callback was called before
Vlabelheight = 1
# Left List #
for i in range(len(self.LSr)):
self.LSlabelsr.append(Label(self.Frame1, text = str(self.LSr[i]), bg = "LightBlue", justify = "left", height = Vlabelheight))
self.LSlabelsr[i].grid(row = i, column = 0, sticky = E+W)
# Middle List #
for i in range(len(self.LSa)):
self.LSlabelsa.append(Label(self.Frame1, text = str(self.LSa[i]), bg = "LightBlue", fg = "DarkViolet", justify = "left", height = Vlabelheight))
self.LSlabelsa[i].grid(row = i, column = 2, sticky = E+W)
# Right List #
for i in range(len(self.LSb)):
self.LSlabelsb.append(Label(self.Frame1, text = str(self.LSb[i]), bg = "LightBlue", fg = "DarkGreen", justify = "left", height = Vlabelheight))
self.LSlabelsb[i].grid(row = i, column = 4, sticky = E+W)
self.Frame1.update()
self.Frame1.update_idletasks()
print("done")
if __name__ == "__main__":
root = Tk()
root.title("Invisible")
root.resizable(FALSE,FALSE)
root.withdraw()
app = Processing(root)
root.mainloop()
Working version after suggestions by R4PH4EL:
Proper indentation: the functions were defined as part of the init.
Some tweaks on the lambda commands on line 43/107 & 44/110.
from Tkinter import *
import math
class Processing(Toplevel):
def __init__(self, master, *args, **kwargs):
Toplevel.__init__(self, master)
self.master = master
self.title("Process Window")
for r in range(6):
self.rowconfigure(r, weight = 1)
for c in range(4):
self.columnconfigure(c, weight = 1)
### WINDOW size and position definitions ###
ScreenSizeX = master.winfo_screenwidth()
ScreenSizeY = ( master.winfo_screenheight() - 75 ) #about 75pixels for taskbar on bottom of screen (Windows)
ScreenRatio = 0.9
FrameSizeX = int(ScreenSizeX * ScreenRatio)
FrameSizeY = int(ScreenSizeY * ScreenRatio)
FramePosX = (ScreenSizeX - FrameSizeX)/2
FramePosY = (ScreenSizeY - FrameSizeY)/2
self.geometry("%sx%s+%s+%s"%(FrameSizeX,FrameSizeY,FramePosX,FramePosY))
### Creating 3 "sub-frames" ###
# Frame 1 - canvas container with scrollbar#
self.Canvas1 = Canvas(self, bg = "white")
self.Canvas1.grid(row = 0, column = 0, rowspan = 5, columnspan = 4, sticky = N+E+S+W)
self.Canvas1.rowconfigure(1, weight = 1)
self.Canvas1.columnconfigure(1, weight = 1)
self.myscrollbar=Scrollbar(self, orient = "vertical", command = self.Canvas1.yview)
self.Canvas1.configure(yscrollcommand = self.myscrollbar.set)
self.myscrollbar.grid(row = 0, column = 4, rowspan = 5, sticky = N+S)
# Frame 1 - Frame widget in canvas #
self.Frame1 = Frame(self.Canvas1, bg = "white")
self.Frame1.rowconfigure(0, weight = 1)
for c in range(2):
self.Frame1.columnconfigure(1 + (2 * c), weight = 1)#1,3 - columns for small icons in the future
for cb in range(3):
self.Frame1.columnconfigure((cb * 2), weight = 9)#0,2,4 - columns for data
self.CFrame1 = self.Canvas1.create_window(0, 0, window = self.Frame1, width = FrameSizeX, anchor = N+W)
self.Canvas1.bind("<Configure>", lambda event: self.resize_frame(event)) # !!!!! Doesn't work & gives error !!!!!! #
self.Frame1.bind("<Configure>", lambda event: self.scrollevent(event))
self.Canvas1.config(scrollregion=self.Canvas1.bbox("all"))
# Frame 2 #
self.Frame2 = Frame(self, bg= "yellow")
self.Frame2.grid(row = 5, column = 0, rowspan = 1, columnspan = 3, sticky = W+E+N+S)
for r in range(3):
self.Frame2.rowconfigure(r, weight=1)
for c in range(3):
self.Frame2.columnconfigure(c, weight = 1)
# Frame 3 #
self.Frame3 = Frame(self)
self.Frame3.grid(row = 5, column = 3, rowspan = 1, columnspan = 2, sticky = W+E+N+S)
self.Frame3.rowconfigure(0, weight = 1)
self.Frame3.columnconfigure(0, weight = 1)
# Propagation #
#self.grid_propagate(False) # All widgets (the 3 subframes) need to fit in Toplevel window. Minimal window size will be implemented later.
self.Canvas1.grid_propagate(False) # canvas works with scrollbar, widgets dont need to fit in window size.
#self.Frame1.grid_propagate(False) # Frame1 should resize to hold all data (label-widgets)
self.Frame2.grid_propagate(False) # fixed frame dimensions
self.Frame3.grid_propagate(False) # fixed textbox dimensions
self.Frame1.update_idletasks() # just to make sure
### Widgets for the multiple frames ###
# Frame1 - further populated by button command in frame 2#
self.lblaa = Label(self.Frame1, bg="white", text = "Processing...", justify = "left")
self.lblaa.grid(row = 0, column = 0, sticky = N+W)
self.LSlabelsr = []
self.LSlabelsa = []
self.LSlabelsb = []
# Frame 2 #
self.Wbuttontest=Button(self.Frame2, text="Start listing test", command = lambda: self.refresh())
self.Wbuttontest.grid(row = 0, column = 0, columnspan = 3)
self.Wentry = Entry(self.Frame2)
self.Wentry.grid(row = 2, column = 0, columnspan = 3, sticky = E+W, padx = 10)
self.Wentry.delete(0, END)
self.Wentry.insert(0, "user input here")
# Frame3 #
self.Wtext = Text(self.Frame3)
self.Wscrollb = Scrollbar(self.Frame3)
self.Wscrollb.config(command = self.Wtext.yview)
self.Wtext.config(yscrollcommand = self.Wscrollb.set)
self.Wtext.grid(row = 0, column = 0, sticky = N+E+W+S)
### Test-Lists ### Last character in the left column is "ez" !! ###
self.LSa = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
self.LSb = [1, 2, 3, 4, 66, 6, 7, 8, 9, 67, 11, 12, 13, 14, 68]
self.LSr = []
ib = 0
prefix = ""
for i in range(104):
if ib > 25:
prefix = chr(ord("a") + (i/ib - 1))
ib = 0
else:
pass
self.LSr.append(prefix + chr(97+ib))
ib += 1
### FUNCTIONS ###
def resize_frame(self, e):
self.Canvas1.itemconfig(self.CFrame1, width = e.width) #height of frame should depend on the contents.
def scrollevent(self, event):
self.Canvas1.configure(scrollregion=self.Canvas1.bbox("all"),width=200,height=200)
def refresh(self): ### Button-command: data will be shown ###
if self.lblaa.winfo_exists() == 1:
self.lblaa.destroy()
for i in range(len(self.LSr)):
self.Frame1.rowconfigure(i, weight = 0)
del self.LSlabelsr[:] # remove any previous labels from if the callback was called before
del self.LSlabelsa[:] # remove any previous labels from if the callback was called before
del self.LSlabelsb[:] # remove any previous labels from if the callback was called before
Vlabelheight = 1
# Left List #
for i in range(len(self.LSr)):
self.LSlabelsr.append(Label(self.Frame1, text = str(self.LSr[i]), bg = "LightBlue", justify = "left", height = Vlabelheight))
self.LSlabelsr[i].grid(row = i, column = 0, sticky = E+W)
# Middle List #
for i in range(len(self.LSa)):
self.LSlabelsa.append(Label(self.Frame1, text = str(self.LSa[i]), bg = "LightBlue", fg = "DarkViolet", justify = "left", height = Vlabelheight))
self.LSlabelsa[i].grid(row = i, column = 2, sticky = E+W)
# Right List #
for i in range(len(self.LSb)):
self.LSlabelsb.append(Label(self.Frame1, text = str(self.LSb[i]), bg = "LightBlue", fg = "DarkGreen", justify = "left", height = Vlabelheight))
self.LSlabelsb[i].grid(row = i, column = 4, sticky = E+W)
self.Frame1.update()
self.Frame1.update_idletasks()
print("done")
if __name__ == "__main__":
root = Tk()
root.title("Invisible")
root.resizable(FALSE,FALSE)
root.withdraw()
app = Processing(root)
root.mainloop()

Either your indentation is wrong or your getting something wrong in general.
All of your functions are defined inside your __init__ function
Second: if you want to call a class function, you call it by obj.function
Your error on lambda: resize(self) may occur as it should be lambda: self.resize.
Give it a shot with this one and try it.
And please make sure your indentations are correct.
I totally agree with Bryan here - ommiting the lambdas it would be (my personal opinion) easier to read and kind of "better" in a meaning of more structured and pragmatic coding style.

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Checkbutton is not clickable after adding an image to it

I started working with tkinter recently and I have the following problem, I need to make the check box bigger but that is only possible with adding an image. The problem is that whenever I add an image to a button it becomes unclickable and the image is not displayed, here is my source code (part of a bigger project). My goal is to display some information and let the user decide which option he gets to keep using the check button. Any help is appreciated.
import tkinter as tk
import tkcalendar as tkc
LARGE_FONT = ("HELVETICA", 32, 'bold')
NORMAL_FONT = ("calibri", 18)
class ConstituireDosar(tk.Toplevel):
def __init__(self, controller):
tk.Toplevel.__init__(self)
self.update_idletasks()
# self.dosar = dosar
self.controller = controller
self.minsize(651, 569)
# self.maxsize(651, 569)
frame_titlu = tk.Frame(self)
frame_titlu.grid(row = 0, column = 0)
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frame_continut.grid(row = 1, column = 0, sticky = "w")
frame_acte = tk.Frame(self)
frame_acte.grid(row = 2, column = 0)
titlu = tk.Label(frame_titlu, font = LARGE_FONT, text = "Constituire Dosar")
titlu.grid(row = 0 , column = 0, padx = 10, pady = 15)
data_emiterii = tk.Label(frame_continut, font = NORMAL_FONT,text = "Data emiterii documentului:")
data_emiterii.grid(row = 1, column = 0, padx = 10, pady = 5, sticky = "w")
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debitori_label.grid(row = 3, column = 0, padx = 10, pady = 5, sticky = "w")
debitori = []
tip_debitori = []
for i in range(2):
debitori.append("Person %s " % str(i))
tip_debitori.append("Person %s type" % str(i))
for i in range(len(debitori)):
print(debitori[i])
row_i = 4
self.vars_debitori = []
on_image = tk.PhotoImage(width=48, height=24)
off_image = tk.PhotoImage(width=48, height=24)
on_image.put(("green",), to=(0, 0, 23,23))
off_image.put(("red",), to=(24, 0, 47, 23))
for i in range(len(debitori)):
var = tk.IntVar(frame_continut, value = 0)
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# Checkbutton(ws, image=switch_off, selectimage=switch_on, onvalue=1, offvalue=0, variable=cb1, indicatoron=False, command=switchState)
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checkbuton.grid(row = row_i, column = 0, padx = 20, pady = 5, sticky = "nw")
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self.vars_debitori.append(var)
row_i += 1
self.vars_acte = []
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v = tk.IntVar()
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row_i += 1
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print(self.cal.get_date().strftime("%d/%m/%y"))
print(self.winfo_height(), self.winfo_width())
if __name__ == "__main__":
root = tk.Tk()
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I tried some options that I saw on the forum, in another file they worked fine but when I tried to implement it in the project itself the checkbutton is still unclickable and it doesn't display the images either. tkinter checkbutton different image I tried to replicate Bryan's answer, but no luck there. Also didn't receive any console error message.
As #furas pointed in the comments above, the problem got fixed with keeping the images as member variables of the class, also the button became clickable after removing the self.toggle(var) command from checkbutton

tkinter window is blank after executing code

I'm starting to code with Python and on my first application I have reached a brick wall. Any help on why this code is not displaying the widgets will be greatly appreciated!
import tkinter
from tkinter import *
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self.frame_header.pack()
ttk.Label(self.header_frame, text = "Bienvenidos a Imprint Plus Manager")
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self.frame_crearorden.pack()
ttk.Label(self.frame_crearorden, text = "Nombre").grid(row = 0, column = 0, padx = 5)
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self.entry_email = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_numtc = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_addinf = Text(self.frame_crearorden, width = 50, height = 10)
self.entry_name.grid(row = 0, column = 1, padx = 5)
self.entry_email.grid(row = 2, column = 1, padx = 5)
self.entry_numtc.grid(row = 4, column = 1, padx = 5)
self.entry_addinf.grid(row = 7, column = 0, columnspan = 2, padx = 5)
ttk.Button(self.frame_crearorden, text = "Submit", command = self.submit).grid(row = 8, columnspan = 1, padx = 5)
ttk.Button(self.frame_crearorden, text = "Clear", command = self.clear).grid(row = 8, columnspan = 0, padx = 5)
def submit(self):
print ("Nombre: {}".format(self.entry_name.get()))
print ("Email: {}".format(self.entry_name.get()))
print ("Num Cel/Tel: {}".format(self.entry_name.get()))
print ("Información Adicional: {}".format(self.entry_name.get(1.0, "end")))
self.clear()
messagebox.showinfo(tite = "Orden #", message = "Orden Guardada")
def clear(self):
self.entry_name.delete(0, "end")
self.entry_email.delete(0, "end")
self.entry_numtc.delete(0, "end")
self.entry_addinf.delete(1.0, "end")
def main():
root = Tk()
app = ImprintPlusApp()
root.mainloop()
if __name__ == '__main__':
main()
Everytime I launch the code I get a blank tkinter window.
This had a few problems.
You had an _init_ method, not an __init__ method, so the created object wasn't being initialized.
You have to send the root tkinter object to the application, with app = ImprintPlusApp(root).
You had a self.header_frame once instead of self.frame_header.
You had a columnspan = 0 (which is invalid) instead of columnspan = 1 (which doesn't really need to be specified).
I've made the above changes in the code below. It may still need debugging, as I don't know exactly what design you had in mind.
import tkinter
from tkinter import *
from tkinter import ttk
from tkinter import messagebox
class ImprintPlusApp:
def __init__(self, master):
self.frame_header = ttk.Frame(master)
self.frame_header.pack()
ttk.Label(self.frame_header, text = "Bienvenidos a Imprint Plus Manager")
self.frame_crearorden = ttk.Frame(master)
self.frame_crearorden.pack()
ttk.Label(self.frame_crearorden, text = "Nombre").grid(row = 0, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Email").grid(row = 2, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Numero Cel/Tel").grid(row = 4, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Información Adicional").grid(row = 6, column = 0, padx = 5)
self.entry_name = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_email = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_numtc = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_addinf = Text(self.frame_crearorden, width = 50, height = 10)
self.entry_name.grid(row = 0, column = 1, padx = 5)
self.entry_email.grid(row = 2, column = 1, padx = 5)
self.entry_numtc.grid(row = 4, column = 1, padx = 5)
self.entry_addinf.grid(row = 7, column = 0, columnspan = 2, padx = 5)
ttk.Button(self.frame_crearorden, text = "Submit", command = self.submit).grid(row = 8, columnspan = 1, padx = 5)
ttk.Button(self.frame_crearorden, text = "Clear", command = self.clear).grid(row = 8, columnspan = 1, padx = 5)
def submit(self):
print ("Nombre: {}".format(self.entry_name.get()))
print ("Email: {}".format(self.entry_name.get()))
print ("Num Cel/Tel: {}".format(self.entry_name.get()))
print ("Información Adicional: {}".format(self.entry_name.get(1.0, "end")))
self.clear()
messagebox.showinfo(tite = "Orden #", message = "Orden Guardada")
def clear(self):
self.entry_name.delete(0, "end")
self.entry_email.delete(0, "end")
self.entry_numtc.delete(0, "end")
self.entry_addinf.delete(1.0, "end")
def main():
root = Tk()
app = ImprintPlusApp(root)
root.mainloop()
if __name__ == '__main__':
main()

Creating an auto incrementing loop within a function in python

I'm trying to set up a loop that keeps track of a number of ordernums as well as assign a nw ordernum to each new order in increasing value.
Here's the full code:
*This is the fixed code using Klaus D. 's advice
import tkinter
from tkinter import *
from tkinter import ttk
from tkinter import messagebox
from itertools import count
class ImprintPlusApp:
def __init__(self, master):
self.counter = count(1)
master.title("Imprint Plus Manager")
self.frame_header = ttk.Frame(master)
self.frame_header.pack()
ttk.Label(self.frame_header, text = "Bienvenidos a Imprint Plus Manager")
self.frame_crearorden = ttk.Frame(master)
self.frame_crearorden.pack()
ttk.Label(self.frame_crearorden, text = "Nombre").grid(row = 0, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Email").grid(row = 2, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Numero Cel/Tel").grid(row = 4, column = 0, padx = 5)
ttk.Label(self.frame_crearorden, text = "Información Adicional").grid(row = 6, column = 0, padx = 5)
self.entry_name = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_email = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_numtc = ttk.Entry(self.frame_crearorden, width = 24)
self.entry_addinf = Text(self.frame_crearorden, width = 50, height = 10)
self.entry_name.grid(row = 0, column = 1, padx = 5)
self.entry_email.grid(row = 2, column = 1, padx = 5)
self.entry_numtc.grid(row = 4, column = 1, padx = 5)
self.entry_addinf.grid(row = 7, column = 0, columnspan = 2, padx = 5)
ttk.Button(self.frame_crearorden, text = "Submit", command = self.submit).grid(row = 8, column = 1,columnspan = 1, padx = 5)
ttk.Button(self.frame_crearorden, text = "Clear", command = self.clear).grid(row = 8, columnspan = 1, padx = 5)
def submit(self):
result = next(self.counter)
orderResult = str(result)
print ("Nombre: {}".format(self.entry_name.get()))
print ("Email: {}".format(self.entry_email.get()))
print ("Num Cel/Tel: {}".format(self.entry_numtc.get()))
print ("Información Adicional: {}".format(self.entry_addinf.get(1.0, "end")))
self.clear()
messagebox.showinfo(title = "Orden #"+ orderResult, message = "Orden Guardada")
def clear(self):
self.entry_name.delete(0, "end")
self.entry_email.delete(0, "end")
self.entry_numtc.delete(0, "end")
self.entry_addinf.delete(1.0, "end")
def main():
root = Tk()
app = ImprintPlusApp(root)
root.mainloop()
if __name__ == '__main__':
main()
You can use itertools.count() for that. It creates a generator, that just returns one number after the other, when you call it's next() method:
from itertools import count
counter = count(1)
for row in rows:
row_id = counter.next()
In this example on every iteration through the rows you will get an other value for row_id, starting from the given argument (which was 1): 1, 2, 3, …
Generators an also be used in for loops directly:
for number in count(1):
print(number)
This will fastly print a list of numbers.
In you class it would be a good idea to create the counter in __init__() and call next() when needed:
def __init__(self, master):
self.counter = count(1)
…(more code)…
def submit(self):
my_id = self.counter.next()
…(more code)…

create a mathematis matrix with python

Well, I've looked a lot in the web before asking, so here's the thing.
I'm not really experienced in Python and I need to develop this Matrix Generator. Yes, it is a mathematics matrix. I'm using Tkinter and Python 3.3.
First i ask the Number of Rows and Columns and then I fill each field and the code transforms it in a notepad for other programs to read.
I used the grid method so i'm having trouble with large scale matrices. The thing is I need to apply a scrollbar. I have read that I can use frame and a friend of mine showed me a scrollbar he made using frames. Can you help me? ;D
Every time I refer to linhas is the same as rows and colunas is the same as columns.
import tkinter
class DropDown:
def __init__(self):
self._list_window = tkinter.Tk();
self._row_var = tkinter.StringVar(self._list_window)
self._col_var = tkinter.StringVar(self._list_window)
self._row_var.set(0)
self._col_var.set(0)
self._rows = None
self._columns = None
self._row_label = tkinter.Label(
master = self._list_window,
text = 'Number of rows: ')
self._row_label.grid(
row = 0, column = 0, padx = 5, pady = 5,
sticky = tkinter.NE)
self._row_entry = tkinter.Entry(self._list_window, width=1)
self._row_entry.grid(
row = 0, column = 1, padx = 5, pady = 5,
sticky = tkinter.EW)
self._column_label = tkinter.Label(
master = self._list_window,
text = 'Number of columns: ')
self._column_label.grid(
row = 1, column = 0, padx = 5, pady = 5,
sticky = tkinter.NE)
self._column_entry = tkinter.Entry(self._list_window)
self._column_entry.grid(
row = 1, column = 1, padx = 5, pady = 5,
sticky = tkinter.EW)
self._list_window.columnconfigure(1, weight = 1)
self._OK_button = tkinter.Button(
master = self._list_window, text = "OK",
command = self.get_dimensions)
self._OK_button.grid(
row = 2, column = 0, columnspan = 2,
padx = 5, pady = 5)
def get_dimensions(self):
self._rows = self._row_entry.get()
self._columns = self._column_entry.get()
self._list_window.destroy()
def show(self):
self._list_window.mainloop()
if self._rows != None and self._columns != None:
return (int(self._rows), int(self._columns))
else:
return (None, None)
class matrix:
def __init__(self, linhas, colunas):
self.linhas=linhas
self.colunas=colunas
self.mwindow=tkinter.Tk()
self.vars = [[] for x in range(self.linhas) ]
for i in range(self.linhas):
for j in range(self.colunas):
v=tkinter.StringVar()
self.vars[i].append(v)
entry = tkinter.Entry(master = self.mwindow, textvariable = self.vars[i][j])
entry.grid(row = i, column = j, padx = 10, pady = 10)
self.botOK=tkinter.Button(master=self.mwindow, text="OK", command=self.OK)
self.botOK.grid(row=self.linhas+1, column=(self.colunas//2)-1, columnspan=2, padx=5, pady=5)
def Start(self):
self.mwindow.mainloop()
return self.lista
def OK(self):
self.lista = []
for i in range(self.linhas):
for j in range(self.colunas):
self.lista.append(self.vars[i][j].get())
self.mwindow.destroy()
dimensoes= DropDown().show()
#print (dimensoes)
if dimensoes[0]<dimensoes[1]:
diag=dimensoes[0]
else:
diag=dimensoes[1]
matriz=matrix(dimensoes[0], dimensoes[1]).Start()
with (open("notepadmatrix.txt", "w")) as arquivo:
arquivo.write(str(dimensoes[0]*dimensoes[1])+"\n")
arquivo.write(str(dimensoes[0])+"\n")
arquivo.write(str(dimensoes[1])+"\n")
arquivo.write(str(diag)+"\n")
for i in matriz:
arquivo.write(i+"\n")
arquivo.write("fim")
and here goes the code he gave me to the scroll bar.
class Earnings():
def __init__(self, Ticker, EPS, Time):
self._root_window = tkinter.Tk()
self.canvas = tkinter.Canvas(master = self._root_window, background = '#8989E0')
self.canvas.config(scrollregion=[0,0,600,10000])
self.frame = tkinter.Frame(master = self.canvas)
self.scrollbar = tkinter.Scrollbar(master = self._root_window, orient = tkinter.VERTICAL)
self.frame.pack(side = tkinter.LEFT, fill = tkinter.BOTH, expand = tkinter.TRUE)
self.canvas.create_window((0,0), window=self.frame, anchor=tkinter.NW)
self.scrollbar.pack(side = tkinter.RIGHT, fill = tkinter.BOTH, expand = tkinter.TRUE)
self.canvas.pack(side = tkinter.TOP, fill = tkinter.BOTH, expand = tkinter.TRUE)
self.scrollbar.config(command = self.canvas.yview)
self.canvas.config(yscrollcommand = self.scrollbar.set)
self.ticker = Ticker
self.EPS = EPS
self.time = Time
for i in range(len(self.ticker)):
self.TickerButton = tkinter.Button(
master = self.frame,
text = self.ticker[i],
command = lambda i=i: self.search_ticker(self.ticker[i]))
self.TickerButton.grid(row = i+1, column = 0, padx = 10, pady = 10,
sticky = tkinter.W)
self.EPSLabel = tkinter.Label(
master = self.frame,
text = self.EPS[i])
self.EPSLabel.grid(row = i+1, column = 1, padx = 10, pady = 10,
sticky = tkinter.W)
self.TimeLabel = tkinter.Label(
master = self.frame,
text = self.time[i])
self.TimeLabel.grid(row = i+1, column = 2, padx = 10, pady = 10,
sticky = tkinter.W)
TkInter is long in the tooth, I'd use Kivy Grid layout instead:
http://kivy.org/docs/api-kivy.uix.gridlayout.html?highlight=grid

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