尝试运行我的 Tkinter GUI 时出错

Question

我正在尝试使用 Tkinter 制作一个读取 excel 的 python GUI，然后将 excel 信息上传到数据库中。尝试运行脚本时，我可以上传 Excel 电子表格并阅读它，但是当我单击“提交”按钮时。我得到“运行时错误：在请求上下文之外工作”。错误。有人知道这是如何工作的吗？因为我知道这在 Flask 上是如何工作的，但在 Tkinter 上却不知道。

代码：

root = tk.Tk()

root.geometry("500x500") 
#root.pack_propagate(True)
#root.resizable(0, 0) 



Label(root, text="Metadata Automation", font=16).place(rely=0, relx=0.10)


frame1 = tk.LabelFrame(root, text="Excel Data")
frame1.place(height=250, width=500)


file_frame = tk.LabelFrame(root, text="Open File")
file_frame.place(height=100, width=400, rely=0.55, relx=0)


button1 = tk.Button(file_frame, text="Browse A File", command=lambda: File_dialog())
button1.place(rely=0.65, relx=0.50)

button2 = tk.Button(file_frame, text="Load File", command=lambda: Load_excel_data())
button2.place(rely=0.65, relx=0.30)


label_file = ttk.Label(file_frame, text="No File Selected")
label_file.place(rely=0, relx=0)



tv1 = ttk.Treeview(frame1)
tv1.place(relheight=1, relwidth=1) # set the height and width of the widget to 100% of its container (frame1).

treescrolly = tk.Scrollbar(frame1, orient="vertical", command=tv1.yview) # command means update the yaxis view of the widget
treescrollx = tk.Scrollbar(frame1, orient="horizontal", command=tv1.xview) # command means update the xaxis view of the widget
tv1.configure(xscrollcommand=treescrollx.set, yscrollcommand=treescrolly.set) # assign the scrollbars to the Treeview Widget
treescrollx.pack(side="bottom", fill="x") # make the scrollbar fill the x axis of the Treeview widget
treescrolly.pack(side="right", fill="y") # make the scrollbar fill the y axis of the Treeview widget


survey = tk.IntVar()
project = tk.IntVar()

#Add checkboxes
SurveyCheckbox = Checkbutton(root, text="Insert a survey", variable=survey, onvalue=1, offvalue=3)
ProjectCheckbox = Checkbutton(root, text="Insert a project", variable=project, onvalue=2, offvalue=4)

SurveyCheckbox.deselect()
ProjectCheckbox.deselect()

#place checkboxes under the excel reader
SurveyCheckbox.place(rely=0.80, relx=0)
ProjectCheckbox.place(rely=0.85, relx=0)


#Add Button
Button(root, text="Submit", command=lambda: Gui(), fg="red").place(rely=0.90, relx=0.1)



def File_dialog():

    #This Function will open the file explorer and assign the chosen file path to label_file
    filename = filedialog.askopenfilename(initialdir="/",
                                          title="Select A File",
                                          filetype=(("xlsx files", "*.xlsx"),("All Files", "*.*")))
    
    label_file["text"] = filename
    
    return filename
  
def Load_excel_data():

    #If the file selected is valid this will load the file into the Treeview
    file_path = label_file["text"]
    
    try:

        file = r"{}".format(file_path)
        
        if file[-4:] == ".csv":
            
            df = pd.read_excel(file, skiprows=3, engine='xlrd')
            
            """clear_data()"""

            tv1["column"] = list(df.columns)
            tv1["show"] = "headings"

            for column in tv1["columns"]:
                
                tv1.heading(column, text=column) # let the column heading = column name

            df_rows = df.to_numpy().tolist() # turns the dataframe into a list of lists

            for row in df_rows:
                
                tv1.insert("", "end", values=row) # inserts each list into the treeview. For parameters see https://docs.python.org/3/library/tkinter.ttk.html#tkinter.ttk.Treeview.insert
            

        else:
            
            df = pd.read_excel(file, skiprows=3, engine='openpyxl')
                
            """clear_data(tv1)"""

            tv1["column"] = list(df.columns)
            tv1["show"] = "headings"

            for column in tv1["columns"]:
                    
                tv1.heading(column, text=column) # let the column heading = column name

            df_rows = df.to_numpy().tolist() # turns the dataframe into a list of lists

            for row in df_rows:
                    
                tv1.insert("", "end", values=row) # inserts each list into the treeview. For parameters see https://docs.python.org/3/library/tkinter.ttk.html#tkinter.ttk.Treeview.insert
        
    except ValueError:
        
        tk.messagebox.showerror("Information", "The file you have chosen is invalid")
        return None

    except FileNotFoundError:
        
        tk.messagebox.showerror("Information", f"No such file as {file_path}")
        return None
    
    return df

def clear_data():
    
    tv1.delete(*tv1.get_children())
    return None

def Gui():
    
        survey_chk = survey.get()
        project_chk = project.get()
        
        utils.ConnectionInit()
        df = Load_excel_data()
        message = ' '

        connection = utils.CreateConnection()

        if survey_chk == 1 and project_chk != 2:
            utils.CreateSurvey(connection, df)
            message = 'hi'
            
        
        elif project_chk == 2 and survey_chk != 1:
            #utils.CreateProject(connection, df)
            message = 'chau'
        
        elif survey_chk == 1 and project_chk == 2:
            #utils.CreateSurvey(connection, df)
            #utils.CreateProject(connection, df)
            message = 'hola'

        lblMessage.config(text=message)


lblMessage = tk.Label(root)
lblMessage.place(rely=0.90, relx=0.10)


if __name__ == "__main__":
    root.mainloop()

错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\SCDBOHU\.conda\envs\Proyecto\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "c:/Users/SCDBOHU/Desktop/GitRepos/SeismicDataAutomation/Project/GUI_TEST.PY", line 68, in <lambda>
    Button(root, text="Submit", command=lambda: Gui(), fg="red").place(rely=0.90, relx=0.1)
  File "c:/Users/SCDBOHU/Desktop/GitRepos/SeismicDataAutomation/Project/GUI_TEST.PY", line 159, in Gui
    utils.CreateSurvey(connection, df)
  File "c:\Users\SCDBOHU\Desktop\GitRepos\SeismicDataAutomation\Project\utils.py", line 133, in CreateSurvey
    SurveyProjnSelection(connection,crs,tfm,projn_id,survey_list,flag_2d)
  File "c:\Users\SCDBOHU\Desktop\GitRepos\SeismicDataAutomation\Project\utils.py", line 168, in SurveyProjnSelection
    flash(f"The Geoframe map projection ID {projn_id} you were trying to create with your survey is already created.", 'warning')
  File "C:\Users\SCDBOHU\.conda\envs\Proyecto\lib\site-packages\flask\helpers.py", line 421, in flash
    flashes = session.get("_flashes", [])
  File "C:\Users\SCDBOHU\.conda\envs\Proyecto\lib\site-packages\werkzeug\local.py", line 347, in __getattr__
    return getattr(self._get_current_object(), name)
  File "C:\Users\SCDBOHU\.conda\envs\Proyecto\lib\site-packages\werkzeug\local.py", line 306, in _get_current_object
    return self.__local()
  File "C:\Users\SCDBOHU\.conda\envs\Proyecto\lib\site-packages\flask\globals.py", line 38, in _lookup_req_object
    raise RuntimeError(_request_ctx_err_msg)
RuntimeError: Working outside of request context.

This typically means that you attempted to use functionality that needed
an active HTTP request.  Consult the documentation on testing for
information about how to avoid this problem.

Answer 1

尝试在没有 anaconda 环境的情况下运行，因为我在没有 anaconda 环境的情况下运行 我的文件正在运行

但是代码是一样的

代码：

import tkinter as tk
from tkinter import *
from tkinter import ttk
from tkinter import filedialog

root = tk.Tk()

root.geometry("500x500") 
root.pack_propagate(True)
root.resizable(0, 0) 



Label(root, text="Metadata Automation", font=16).place(rely=0, relx=0.10)


frame1 = tk.LabelFrame(root, text="Excel Data")
frame1.place(height=250, width=500)


file_frame = tk.LabelFrame(root, text="Open File")
file_frame.place(height=100, width=400, rely=0.55, relx=0)


button1 = tk.Button(file_frame, text="Browse A File", command=lambda: File_dialog())
button1.place(rely=0.65, relx=0.50)

button2 = tk.Button(file_frame, text="Load File", command=lambda: Load_excel_data())
button2.place(rely=0.65, relx=0.30)


label_file = ttk.Label(file_frame, text="No File Selected")
label_file.place(rely=0, relx=0)



tv1 = ttk.Treeview(frame1)
tv1.place(relheight=1, relwidth=1) # set the height and width of the widget to 100% of its container (frame1).

treescrolly = tk.Scrollbar(frame1, orient="vertical", command=tv1.yview) # command means update the yaxis view of the widget
treescrollx = tk.Scrollbar(frame1, orient="horizontal", command=tv1.xview) # command means update the xaxis view of the widget
tv1.configure(xscrollcommand=treescrollx.set, yscrollcommand=treescrolly.set) # assign the scrollbars to the Treeview Widget
treescrollx.pack(side="bottom", fill="x") # make the scrollbar fill the x axis of the Treeview widget
treescrolly.pack(side="right", fill="y") # make the scrollbar fill the y axis of the Treeview widget


survey = tk.IntVar()
project = tk.IntVar()

#Add checkboxes
SurveyCheckbox = Checkbutton(root, text="Insert a survey", variable=survey, onvalue=1, offvalue=3)
ProjectCheckbox = Checkbutton(root, text="Insert a project", variable=project, onvalue=2, offvalue=4)

SurveyCheckbox.deselect()
ProjectCheckbox.deselect()

#place checkboxes under the excel reader
SurveyCheckbox.place(rely=0.80, relx=0)
ProjectCheckbox.place(rely=0.85, relx=0)


#Add Button
Button(root, text="Submit", command=lambda: Gui(), fg="red").place(rely=0.90, relx=0.1)



def File_dialog():

    #This Function will open the file explorer and assign the chosen file path to label_file
    filename = filedialog.askopenfilename(initialdir="/",
                                          title="Select A File",
                                          filetype=(("xlsx files", "*.xlsx"),("All Files", "*.*")))
    
    label_file["text"] = filename
    
    return filename
  
def Load_excel_data():

    #If the file selected is valid this will load the file into the Treeview
    file_path = label_file["text"]
    
    try:

        file = r"{}".format(file_path)
        
        if file[-4:] == ".csv":
            
            df = pd.read_excel(file, skiprows=3, engine='xlrd')
            
            """clear_data()"""

            tv1["column"] = list(df.columns)
            tv1["show"] = "headings"

            for column in tv1["columns"]:
                
                tv1.heading(column, text=column) # let the column heading = column name

            df_rows = df.to_numpy().tolist() # turns the dataframe into a list of lists

            for row in df_rows:
                
                tv1.insert("", "end", values=row) # inserts each list into the treeview. For parameters see https://docs.python.org/3/library/tkinter.ttk.html#tkinter.ttk.Treeview.insert
            

        else:
            
            df = pd.read_excel(file, skiprows=3, engine='openpyxl')
                
            """clear_data(tv1)"""

            tv1["column"] = list(df.columns)
            tv1["show"] = "headings"

            for column in tv1["columns"]:
                    
                tv1.heading(column, text=column) # let the column heading = column name

            df_rows = df.to_numpy().tolist() # turns the dataframe into a list of lists

            for row in df_rows:
                    
                tv1.insert("", "end", values=row) # inserts each list into the treeview. For parameters see https://docs.python.org/3/library/tkinter.ttk.html#tkinter.ttk.Treeview.insert
        
    except ValueError:
        
        tk.messagebox.showerror("Information", "The file you have chosen is invalid")
        return None

    except FileNotFoundError:
        
        tk.messagebox.showerror("Information", f"No such file as {file_path}")
        return None
    
    return df

def clear_data():
    
    tv1.delete(*tv1.get_children())
    return None

def Gui():
    
        survey_chk = survey.get()
        project_chk = project.get()
        
        utils.ConnectionInit()
        df = Load_excel_data()
        message = ' '

        connection = utils.CreateConnection()

        if survey_chk == 1 and project_chk != 2:
            utils.CreateSurvey(connection, df)
            message = 'hi'
            
        
        elif project_chk == 2 and survey_chk != 1:
            #utils.CreateProject(connection, df)
            message = 'chau'
        
        elif survey_chk == 1 and project_chk == 2:
            #utils.CreateSurvey(connection, df)
            #utils.CreateProject(connection, df)
            message = 'hola'

        lblMessage.config(text=message)


lblMessage = tk.Label(root)
lblMessage.place(rely=0.90, relx=0.10)


if __name__ == "__main__":
    root.mainloop()