[Python] New to Tkinter and Threading, Program is freezing up at an odd moment without...

I have a GUI for scraping PDF's and one or two other functionalities. I've tested each individually, and when I query a local database and update the GUI with the results the program works. I can do this multiple times without issue. When I use the other functionality and scrape the PDF and update the GUI with the results that works fine and can be done repeatedly. I can scrape the PDF and then search and both work fine. But for some reason when I search and then scrape the program freezes and I have to force it closed. I think I've narrowed it down to if the search updates the GUI with labels. Because if I do a search that yields no results, the program will continue to run fine. These are my function calls:

def product_search(self):
global products
try:
if self.old_file_name.get() != 'Old SDS':
self.disable_input()
#Add clearing the GUI first here
for child in self.Products_display.winfo_children(): # Iterate over existing children
if isinstance(child, ctk.CTkLabel): # Check if the child is a CTkLabel
child.destroy() # Destroy (delete) the label
with concurrent.futures.ThreadPoolExecutor() as executor_search:
try:
#self.add_bar()
future_search = executor_search.submit(search, self.old_file_name.get())
products = future_search.result()
print("Succesfully Searched and closed")
except Exception as e:
self.item_label1 = ctk.CTkLabel(self.Products_display, text = 'Product Name')
self.item_label1.grid(row=0, column=0, padx=10, pady=10, sticky='nsew')
self.item_label2 = ctk.CTkLabel(self.Products_display, text = 'PNUM')
self.item_label2.grid(row=0, column=1, padx=10, pady=10, sticky='nsew')
self.item_label3 = ctk.CTkLabel(self.Products_display, text = 'PMAST')
self.item_label3.grid(row=0, column=2, padx=10, pady=10, sticky='nsew')
messagebox.showerror("Error", "Failed to search products: " + str(e))
if isinstance(products, str):
messagebox.showerror("Error", "Failed to search products: " + str(products))
self.enable_input()
#self.remove_bar()
return
elif products.empty:
messagebox.showinfo("Results", "No Products Found")
self.item_label1 = ctk.CTkLabel(self.Products_display, text = 'Product Name')
self.item_label1.grid(row=0, column=0, padx=10, pady=10, sticky='nsew')
self.item_label2 = ctk.CTkLabel(self.Products_display, text = 'PNUM')
self.item_label2.grid(row=0, column=1, padx=10, pady=10, sticky='nsew')
self.item_label3 = ctk.CTkLabel(self.Products_display, text = 'PMAST')
self.item_label3.grid(row=0, column=2, padx=10, pady=10, sticky='nsew')
self.enable_input()
#self.remove_bar()
return
else:
print('found products')
self.item_label1 = ctk.CTkLabel(self.Products_display, text = 'Product Name')
self.item_label1.grid(row=0, column=0, padx=10, pady=10, sticky='nsew')
self.item_label2 = ctk.CTkLabel(self.Products_display, text = 'PNUM')
self.item_label2.grid(row=0, column=1, padx=10, pady=10, sticky='nsew')
self.item_label3 = ctk.CTkLabel(self.Products_display, text = 'PMAST')
self.item_label3.grid(row=0, column=2, padx=10, pady=10, sticky='nsew')
index = 1
if len(products) > 0:
for row in products.itertuples():
self.item_label1 = ctk.CTkLabel(self.Products_display, text = row[1])
self.item_label1.grid(row=index, column=0, padx=10, pady=10, sticky='nsew')
self.item_label2 = ctk.CTkLabel(self.Products_display, text = row[2])
self.item_label2.grid(row=index, column=1, padx=10, pady=10, sticky='nsew')
self.item_label3 = ctk.CTkLabel(self.Products_display, text = row[3])
self.item_label3.grid(row=index, column=2, padx=10, pady=10, sticky='nsew')
index += 1
else:
self.item_label1 = ctk.CTkLabel(self.Products_display, text = 'None Found')
self.item_label1.grid(row=1, column=1, padx=10, pady=10, sticky='nsew')
del index
else:
messagebox.showwarning("Warning", "Silly Goose, please select/enter an old SDS file first.")
except Exception as e:
messagebox.showerror("Error", "Failed to search products: " + str(e))

self.enable_input()
#self.remove_bar()
print('Done with product search')

def scrape(self):
global results
self.disable_input()
#self.add_bar()

try:
print('Deleting old labels')
for child in self.Products_display.winfo_children(): # Iterate over existing children
if isinstance(child, ctk.CTkLabel): # Check if the child is a CTkLabel
child.destroy() # Destroy (delete) the label

if self.new_file_path.get() != 'New SDS':
print('Starting the executor')
with concurrent.futures.ThreadPoolExecutor() as executor_scrape:
#self.add_bar()
future_scrape = executor_scrape.submit(scrape_method, self.new_file_path.get(),word_list,pictodf)
results = future_scrape.result()
executor_scrape.shutdown()
self.update_values(results)
#self.remove_bar()
self.enable_input()
#self.remove_bar()
self.enable_input()
except Exception as e:
messagebox.showerror("Error", "Failed to scrape: " + str(e))


From what I'm reading, it seems to be a threading issue. I've tried adding shutdown() to be sure the thread is closed and forcing the program to wait a few seconds at different points in the scrape function. But it has no helpful affect and I've tried removing different portions of code. Removing the sections where I add item_label1,2,3 gets the program working. Even if products gets updated. So it seems to be the GUI portion that's causing the problem.

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