tkinter

问题 I have dropdown option in tkinter which select the option of dropdown by groupby the col1 by dataframe pandas , Now I am able to see the subset of dataframe by clicking ok button in my terminal , I want to see the subset dataframe after selecting into dropdown in my GUI , Please let me know how to see the subset dataframe a/c to dropdown option into my GUI . import tkinter as tk import pandas as pd # --- functions --- def on_click(): val = selected.get() if val == 'all': print(df) else: df2 =

问题 I wrote this simple code using grid(), but there seem to be a problem and shows the error : class Input_screen: def __init__(self,master): frame = Frame(master) frame.pack() self.name_lable = Label(frame,text = 'NAME') self.name_e = Entry(root) self.name_lable.grid(row=1,column=0,sticky=W) self.name_e.grid(row=1,column=1) root = Tk() b = Input_screen(root) root.mainloop() TclError: cannot use geometry manager grid inside . which already has slaves managed by pack 回答1: The error is telling you

问题 Most relevant questions I've seen here are not fixing my issue. I'm writing a program that uses matplotlib and tkinter to make a GUI. I'm running CentOS7. I get this when trying to run python36 testGraph.py on my server: Traceback (most recent call last): File "testGraph.py", line 167, in <module> app = SeaofBTCapp() File "testGraph.py", line 57, in __init__ tk.Tk.__init__(self, *args, **kwargs) File "/usr/lib64/python3.6/tkinter/__init__.py", line 2020, in __init__ self.tk = _tkinter.create

问题 I am using the following code to plot the Matplotlib Basemap on tkinter canvas: from tkinter import * from tkinter.ttk import * import numpy as np from matplotlib.figure import Figure import matplotlib.pyplot as plt from matplotlib.backends.backend_tkagg import (NavigationToolbar2Tk) from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg as FigureCanvas import os os.environ['PROJ_LIB'] = r'C:\Users\AppData\Local\Continuum\anaconda3\pkgs\proj4-4.9.3-vc14_5\Library\share' from mpl

问题 Hey im trying to put text that contains a few paragraphs in a label widget. I would like it to display on multiple lines and use a y scrollbar so everything can fit and be viewed in the label widget. It should turn out like this: Except instead of a text widget it would be a label widget I have tried to do this with the following code: from tkinter import * writtenSolution = Tk() writtenSolution.title("Written Response Question") writtenSolution.resizable(0,0) header = LabelFrame

问题 Hey im trying to put text that contains a few paragraphs in a label widget. I would like it to display on multiple lines and use a y scrollbar so everything can fit and be viewed in the label widget. It should turn out like this: Except instead of a text widget it would be a label widget I have tried to do this with the following code: from tkinter import * writtenSolution = Tk() writtenSolution.title("Written Response Question") writtenSolution.resizable(0,0) header = LabelFrame

问题 Is it normal that Tkinter's Canvas' create_text 's font size doesn't change when I change the Canvas' scale with canvas.scale ? I thought that, as it is a high level GUI management system, I wouldn't have to resize manually the text done with create_text after a zooming. Isn't this strange, or am I wrong ? 回答1: It's normal, even if not entirely what you want. The scale method just changes the coordinate lists, but text items only have one of those so they just get (optionally) translated.

问题 i a beginner and i am trying to make a blood sugar tracking application using python Tkinter and Sqlite, so the problem is that after "selecting" a row from treeview widget and "updating" its values the Blue highlight no longer exists but the data is stored and if the "UPDATE" button/function is clicked again even without selecting a row from treeview the values on the previously selected row get updated. import numpy as np from tkinter import * from tkinter import messagebox from tkinter

问题 i a beginner and i am trying to make a blood sugar tracking application using python Tkinter and Sqlite, so the problem is that after "selecting" a row from treeview widget and "updating" its values the Blue highlight no longer exists but the data is stored and if the "UPDATE" button/function is clicked again even without selecting a row from treeview the values on the previously selected row get updated. import numpy as np from tkinter import * from tkinter import messagebox from tkinter

问题 in short, what's the difference between tkFileDialog.asksaveasfile and tkFileDialog.asksaveasfilename I could not understand from the build in docs 回答1: asksaveasfile asks the user for a file, then opens that file in write mode and returns it to you so you can write in it. asksaveasfilename asks the user for a file, then returns that file's name. No file is opened; if you want to write to the file, you'll have to open it yourself. asksaveasfilename might be preferred over asksaveasfile if you