回答編集履歴
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補足
test
CHANGED
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@@ -9,3 +9,173 @@
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th.Thread(target = self.loop).start()
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```
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---
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別解）スレッドを使わなくても、[after](http://www.geocities.jp/m_hiroi/light/pytk07.html)を使う形でも可能です。あとは[イベントスケジューラ](https://docs.python.org/ja/3.7/library/sched.html)、[dbader/schedule](https://github.com/dbader/schedule)などでも。
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以下は`after`を使ったサンプルコードです。
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```Python
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# -*- coding: utf8 -*-
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# coding=UTF-8
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import sys
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import time
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import tkinter as tk
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stop_flg = False
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ROOT = tk.Tk()
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def stop_watch():
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timer_start = time.time()
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def elapsed():
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timer_lap = time.time() - timer_start
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out_lap = round(timer_lap, 2)
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return out_lap
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return elapsed
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class SSW(tk.Frame):
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def __init__(self, master = None):
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super().__init__(master)
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self.master.title("Sample Stop Watch")
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self.master.bind("<Control-q>", self.quit)
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self.master.geometry("280x160")
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# masterではなく、親コンポーネントはselfで。
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self.lbl_msg = tk.Label(self, text="<quit:Control-q>")
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self.lbl_msg.pack(side = "top")
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self.lbl_lap = tk.Label(self, text="0.00")
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self.lbl_lap.pack(side = "top")
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self.btn_run = tk.Button(self, text="run", command = self.run)
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self.btn_run.pack()
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self.btn_end = tk.Button(self, text="end", command = self.end)
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self.btn_end.pack()
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self.btn_quit = tk.Button(self, text="quit", command = self.quit)
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self.btn_quit.pack()
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def loop(self):
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self.lbl_lap.configure(text=self.clock())
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if not stop_flg:
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# 次のイベント呼び出しを予約
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self.after(1000, self.loop)
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def run(self):
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global stop_flg
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print('Start!')
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stop_flg = False
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self.clock = stop_watch()
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#
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self.after(0, self.loop)
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def end(self):
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global stop_flg
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print('Stop!')
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stop_flg = True
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def quit(self):
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sys.exit()
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# main
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if __name__ == '__main__':
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ss = SSW(ROOT)
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ss.pack()
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ss.mainloop()
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```
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Python言語のスレッドは他の言語と違って、IO律速の処理の高速化に使われることが多いです。
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■参考情報
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|並列方法|律速ポイント|GILの制限|データの受け渡し|
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|:--|:--:|:--:|:--|
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|プロセス|演算律速|影響を受けない|pickle可能なオブジェクト|
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|スレッド|IO律速|影響を受ける|制約なし|
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※GILは[グローバルインタプリタロック](https://ja.wikipedia.org/wiki/%E3%82%B0%E3%83%AD%E3%83%BC%E3%83%90%E3%83%AB%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%97%E3%83%AA%E3%82%BF%E3%83%AD%E3%83%83%E3%82%AF)といいます。
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