我有一个在 VSCode 中运行的 python 程序，但在某一时刻我收到了这个 RuntimeError: can't create new thread atterpreter shutdown ，我什至没有关闭任何东西，我不明白。顺便说一句，相同的程序在我朋友的计算机上运行得非常好（我们有完全相同的程序）
代码（抱歉有点长，但我无法缩短，我已经排除了所有不必要的内容）：
import tkinter
from tkinter import ttk
import threading
import time
class Main:
def __init__(self) -> None:
# Variables to check if the progress bar is running (not crucial for the current issue)
self.is_progress_bar_running = False
self.is_change = False
self.state = None
self.client_loaded = False
# Launching everything in parallel
thread_client_list = threading.Thread(target=self.client_list)
thread_client_list.start()
thread_get_sites = threading.Thread(target=self.get_sites)
thread_get_sites.start()
tkinter_start = threading.Thread(target=self.show_gui)
tkinter_start.start()
def client_list(self):
"""Find clients
"""
time.sleep(3)
self.client_loaded = True
return
def get_sites(self):
"""Find sites
"""
time.sleep(3)
return
def start_progress_bar(self, direction):
"""Starts the loading bar until everything is loaded
Args:
direction (bool): True if the bar is moving to the right, False if the bar is moving to the left
"""
if not self.is_progress_bar_running:
self.is_progress_bar_running = True
# If self.client_loaded
if not isinstance(self.client_loading, ttk.Progressbar):
self.state = None
self.is_change = False
self.client_loading_label["text"] = "Loading clients in progress..."
self.client_loading.destroy()
self.client_loading = ttk.Progressbar(self.general_info_frame, orient="horizontal", length=100, mode="indeterminate", takefocus=True, maximum=100, value=0)
self.client_loading.grid(row=1,column=1,padx=20,pady=20)
self.client_loaded = False
# Restart loading clients and sites
self.thread_client_list = threading.Thread(target=self.client_list)
self.thread_client_list.start()
self.thread_get_sites = threading.Thread(target=self.get_sites)
self.thread_get_sites.start()
# If direction is True, move forward
if direction:
self.client_loading['value'] += 25
# Change direction when reaching the end
if self.client_loading['value'] + 25 > 100:
direction = False
# Destroy the loading bar when everything is loaded
if self.client_loaded:
if self.state == 3:
self.client_loading_label["text"] = "Error: no internet connection\nReload?"
self.client_loading.destroy()
self.client_loading = tkinter.Button(self.general_info_frame, text="Reload clients", command= lambda: self.start_progress_bar(True))
self.client_loading.grid(row=1,column=1,padx=20,pady=20)
self.is_progress_bar_running = False
else:
self.client_loading_label["text"] = "Clients loaded!\nReload?"
self.client_loading.destroy()
self.client_loading = tkinter.Button(self.general_info_frame, text="Reload clients", command= lambda: self.start_progress_bar(True))
self.client_loading.grid(row=1,column=1,padx=20,pady=20)
self.is_progress_bar_running = False
# Otherwise, start again
else:
self.is_progress_bar_running = False
self.window.after(400, lambda: self.start_progress_bar(direction))
# Otherwise, move backward
else:
self.client_loading['value'] -= 25
# Change direction when reaching the end
if self.client_loading['value'] - 25 < 0:
direction = True
# Destroy the loading bar when everything is loaded
if self.client_loaded:
self.client_loading_label["text"] = "Clients loaded!\nReload?"
self.client_loading.destroy()
self.client_loading = tkinter.Button(self.general_info_frame, text="Reload clients", command= lambda: self.start_progress_bar(True))
self.client_loading.grid(row=1,column=1,padx=20,pady=20)
self.is_progress_bar_running = False
# Otherwise, start again
else:
self.is_progress_bar_running = False
self.window.after(400, lambda: self.start_progress_bar(direction))
def show_gui(self):
"""Function that displays the entire interface
"""
self.window = tkinter.Tk()
self.window.title("Synchroteam Task Creation Form")
self.frame = tkinter.Frame(self.window)
self.frame.pack()
# User information
self.general_info_frame = tkinter.LabelFrame(self.frame, text="General Information")
self.general_info_frame.grid(row=0,column=0,padx=20,pady=20)
# Client loading bar
self.client_loading_label = tkinter.Label(self.general_info_frame, text="Loading clients in progress...")
self.client_loading_label.grid(row=0, column=0)
self.client_loading = ttk.Progressbar(self.general_info_frame, orient="horizontal", length=100, mode="indeterminate", takefocus=True, maximum=100, value=0)
self.client_loading.grid(row=1,column=0,padx=20,pady=20)
for widget in self.general_info_frame.winfo_children():
widget.grid_configure(padx=10, pady=5)
if not self.client_loaded:
# Start the loading bar until everything is loaded
self.window.after(400, lambda: self.start_progress_bar(True))
# Start the loop
self.window.mainloop()
if __name__ == "__main__":
main = Main()
这是我得到的错误：
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\Utilisateur\AppData\Local\Programs\Python\Python312\Lib\tkinter\__init__.py", line 1962, in __call__
return self.func(*args)
^^^^^^^^^^^^^^^^
File "c:\Users\Utilisateur\Documents\Batitech\API\test.py", line 97, in <lambda>
self.client_loading = tkinter.Button(self.general_info_frame, text="Reload clients", command= lambda: self.start_progress_bar(True))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Utilisateur\Documents\Batitech\API\test.py", line 59, in start_progress_bar
self.thread_client_list.start()
File "C:\Users\Utilisateur\AppData\Local\Programs\Python\Python312\Lib\threading.py", line 992, in start
_start_new_thread(self._bootstrap, ())
RuntimeError: can't create new thread at interpreter shutdown
当我启动程序时，错误没有发生。客户端和站点在启动时加载正常，但是当我在启动时加载客户端后将其更改为按钮时，单击 self.client_chargement 按钮尝试重新加载客户端时，会弹出错误。 我再说一遍，这个完全相同的程序在我朋友的计算机上运行得非常好。
如果您花时间阅读所有内容并回答我，请提前感谢您！
事实上，Python 3.12 引入了一项更改，可以防止在主线程退出后创建新线程。目前尚不清楚它是否被视为错误并会被恢复。有关详细信息，请参阅 CPython 问题 #115533。
您现在可以简单地降级到 Python 3.11。
更改主线程的逻辑，使其不会过早退出，而是在返回之前等待所有子线程。这通常是通过在任何子线程上调用
Thread.join()或者，将线程生成转换为使用
with ThreadPoolExecutor() as executor: ...我将 VSCode 中的 python 版本（从 3.12）更改为 3.11，现在它可以工作了，我不再有错误了，我真的不知道为什么，但问题来自 python 3.12