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```python
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from watchdog.events import FileSystemEventHandler
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from watchdog.observers import Observer
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import os
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import time
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target_dir = "aaa.jpg"
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class ChangeHandler(FileSystemEventHandler):
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def on_created(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sができました' % filename)
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def on_modified(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sを変更しました' % filename)
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def on_deleted(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sを削除しました' % filename)
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if __name__ in '__main__':
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while 1:
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event_handler = ChangeHandler()
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observer = Observer()
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observer.schedule(event_handler, target_dir, recursive=True)
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observer.start()
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try:
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while True:
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time.sleep(0.1)
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except KeyboardInterrupt:
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observer.stop()
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observer.join()
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```
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**2 実行結果**
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```bash
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/usr/local/bin/python3 /Users/AM/Desktop/aaa/image_process_Gray.py
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The default interactive shell is now zsh.
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To update your account to use zsh, please run `chsh -s /bin/zsh`.
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For more details, please visit https://support.apple.com/kb/HT208050.
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pcAM:aaa AM$ /usr/local/bin/python3 /Users/AM/Desktop/aaa/image_process_Gray.py
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Traceback (most recent call last):
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File "/Users/AM/Desktop/aaa/image_process_Gray.py", line 1, in <module>
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from watchdog.events import FileSystemEventHandler
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from watchdog.events import FileSystemEventHandler
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import os
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import time
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target_dir = "aaa.jpg"
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class ChangeHandler(FileSystemEventHandler):
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def on_created(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sができました' % filename)
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def on_modified(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sを変更しました' % filename)
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def on_deleted(self, event):
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filepath = event.src_path
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filename = os.path.basename(filepath)
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print('%sを削除しました' % filename)
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ModuleNotFoundError: No module named 'watchdog'
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event_handler = ChangeHandler()
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observer = Observer()
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observer.schedule(event_handler, target_dir, recursive=True)
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observer.start()
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try:
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pcAM:aaa AM$
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time.sleep(0.1)
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except KeyboardInterrupt:
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observer.stop()
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observer.join()
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```
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**
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**3 試してみたことについて**
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パスが通ってないことが原因かと考えました．
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文献[2]を見ると，Pythonがモジュールの検索の際に見ているパスのリストは
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"sys.path"に格納されているとあったので，以下のようにして(文献[1]を参考にして)，パスを追加しました．その後，プログラムを起動したのですが，同じく，ModuleNotFoundError: No module named 'watchdog'が出てしまい解決できませんでした．
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```bash
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pcAM:Web_Image AM$ pip install watchdog
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Requirement already satisfied: watchdog in /Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages (0.10.4)
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Requirement already satisfied: pathtools>=0.1.1 in /Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages (from watchdog) (0.1.2)
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WARNING: You are using pip version 20.1.1; however, version 20.3 is available.
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You should consider upgrading via the '/Users/AM/.pyenv/versions/3.8.5/bin/python3.8 -m pip install --upgrade pip' command.
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pcAM:Web_Image AM$ python
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Python 3.8.5 (default, Dec 3 2020, 15:56:00)
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[Clang 12.0.0 (clang-1200.0.32.27)] on darwin
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Type "help", "copyright", "credits" or "license" for more information.
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>>> import sys, pprint
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>>> pprint.pprint(sys.path)
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['',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python38.zip',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python3.8',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python3.8/lib-dynload',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages']
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>>> sys.path.append('/Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages')
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>>> pprint.pprint(sys.path)
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['',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python38.zip',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages']
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>>> quit()
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```
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/usr/local/bin/python3 /Users/AM/Desktop/aaa/image_process_Gray.py
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The default interactive shell is now zsh.
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To update your account to use zsh, please run `chsh -s /bin/zsh`.
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For more details, please visit https://support.apple.com/kb/HT208050.
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pcAM:aaa AM$ /usr/local/bin/python3 /Users/AM/Desktop/aaa/image_process_Gray.py
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Traceback (most recent call last):
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File "/Users/AM/Desktop/aaa/image_process_Gray.py", line 1, in <module>
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from watchdog.events import FileSystemEventHandler
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ModuleNotFoundError: No module named 'watchdog'
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pcAM:aaa AM$
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```
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**3 試してみたことについて**
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パスが通ってないことが原因かと考えました．
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文献[2]を見ると，Pythonがモジュールの検索の際に見ているパスのリストは
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"sys.path"に格納されているとあったので，以下のようにして(文献[1]を参考にして)，パスを追加しました．その後，プログラムを起動したのですが，同じく，ModuleNotFoundError: No module named 'watchdog'が出てしまい解決できませんでした．
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```
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pcAM:Web_Image AM$ pip install watchdog
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Requirement already satisfied: watchdog in /Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages (0.10.4)
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Requirement already satisfied: pathtools>=0.1.1 in /Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages (from watchdog) (0.1.2)
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WARNING: You are using pip version 20.1.1; however, version 20.3 is available.
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You should consider upgrading via the '/Users/AM/.pyenv/versions/3.8.5/bin/python3.8 -m pip install --upgrade pip' command.
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pcAM:Web_Image AM$ python
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Python 3.8.5 (default, Dec 3 2020, 15:56:00)
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[Clang 12.0.0 (clang-1200.0.32.27)] on darwin
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Type "help", "copyright", "credits" or "license" for more information.
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>>> import sys, pprint
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>>> pprint.pprint(sys.path)
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['',
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'/Users/AM/.pyenv/versions/3.8.5/lib/python38.zip',
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>>> sys.path.append('/Users/AM/.pyenv/versions/3.8.5/lib/python3.8/site-packages')
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>>> pprint.pprint(sys.path)
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>>> quit()
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```
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参考にした文献
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