Python Tkinter在类之间继承DataFrame
Python Tkinter在类之间继承DataFrame
提问于 2018-07-26 05:36:21
我有一个问题，我希望你能帮助我，因为我找不到一个解决方案。基本上，我尝试继承加载到一个类(Window1)中的变量中的DataFrame，并尝试在另一个类(Window1)中使用相同的DataFrame。请在下面找到我当前的简化代码(谢谢)：
import tkinter as tk
from PIL import ImageTk, Image
from tkinter import filedialog, messagebox
import time, os, random, string
from datetime import datetime
from time import gmtime, strftime
import pandas as pd
class Page(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container=tk.Frame(self)
container.grid()
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames={}
for F in (PageOne, PageTwo, PageThree):
frame=F(container, self)
self.frames[F]=frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(PageOne)
def show_frame(self, cont):
frame=self.frames[cont]
frame.tkraise()
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
start_btn = tk.Button(self, text = "Start >>>", command=lambda:controller.show_frame(PageTwo), width = 10, activebackground = "#ffffff", relief="flat").grid()
pass
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.browse_btn = tk.Button(self, text=" Browse ", command=self.select_file)
self.browse_btn.grid(row=4, column=0, padx=290, pady=10, columnspan=3, sticky="w")
self.browse_entry = tk.Entry(self, text="", width=30)
self.browse_entry.grid(row=4, column=0, columnspan=3, padx=100, pady=10, sticky="w")
self.continue_btn = tk.Button(self, text="Continue >>", borderwidth=2, width=10, bg="#00c441", fg="#ffffff", command=lambda:[self.print_df(), controller.show_frame(PageThree)])
self.continue_btn.grid(row=19, column=0, columnspan=3, padx=312, pady=5, sticky="w")
self.continue_btn.config(state=tk.NORMAL)
def select_file(self):
self.path = filedialog.askopenfilename(defaultextension="*.csv", filetypes = (("csv files","*.csv"),("All Files", "*.*")))
self.browse_entry.delete(0, tk.END)
self.browse_entry.insert(0, self.path)
###following DataFrame I would like to use in in the PageThree class.
self.df = pd.read_csv(self.path)
def print_df(self):
return self.df.head()
class PageThree(PageTwo):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
PageTwo.__init__(self, parent, controller)
start_btn = tk.Button(self, text = "Data Frame", command=self.funct01, width = 10).grid()
def funct01(self):
##this is where I would like to utilize the DataFrame (inside the function)
instance=PageTwo(parent,controller)
print(instance.select_file(self))
if __name__=="__main__":
app=Page()
app.geometry("400x400+100+100")
app.mainloop()回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-26 06:13:48
您必须请求Page实例(controller)返回PageTwo实例，并且需要将controller存储在PageTwo“构造函数”中。
我不知道你可以散列一个类定义(使用它有一个字典的关键字)。
import tkinter as tk
from PIL import ImageTk, Image
from tkinter import filedialog, messagebox
import time, os, random, string
from datetime import datetime
from time import gmtime, strftime
import pandas as pd
class Page(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container=tk.Frame(self)
container.grid()
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames={}
for F in (PageOne, PageTwo, PageThree):
frame=F(container, self)
self.frames[F]=frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(PageOne)
def show_frame(self, cont):
frame=self.frames[cont]
frame.tkraise()
def getFrame(self, frame):
return self.frames[frame]
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
start_btn = tk.Button(self, text = "Start >>>", command=lambda:controller.show_frame(PageTwo), width = 10, activebackground = "#ffffff", relief="flat").grid()
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
self.browse_btn = tk.Button(self, text=" Browse ", command=self.select_file)
self.browse_btn.grid(row=4, column=0, padx=290, pady=10, columnspan=3, sticky="w")
self.browse_entry = tk.Entry(self, text="", width=30)
self.browse_entry.grid(row=4, column=0, columnspan=3, padx=100, pady=10, sticky="w")
self.continue_btn = tk.Button(self, text="Continue >>", borderwidth=2, width=10, bg="#00c441", fg="#ffffff", command=lambda:[self.print_df(), controller.show_frame(PageThree)])
self.continue_btn.grid(row=19, column=0, columnspan=3, padx=312, pady=5, sticky="w")
self.continue_btn.config(state=tk.NORMAL)
def select_file(self):
self.path = filedialog.askopenfilename(defaultextension="*.csv", filetypes = (("csv files","*.csv"),("All Files", "*.*")))
self.browse_entry.delete(0, tk.END)
self.browse_entry.insert(0, self.path)
###following DataFrame I would like to use in in the PageThree class.
self.df = pd.read_csv(self.path)
def print_df(self):
return self.df.head()
class PageThree(PageTwo):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
PageTwo.__init__(self, parent, controller)
start_btn = tk.Button(self, text = "Data Frame", command=self.funct01, width = 10).grid()
def funct01(self):
instance = self.controller.getFrame(PageTwo)
dataFrame = instance.df
print(dataFrame.head())
if __name__=="__main__":
app=Page()
app.geometry("400x400+100+100")
app.mainloop()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51528036
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