笔记本小程序代码源

笔记本小程序代码源码

```python

class NoteBook:

def __init__(self):

self.notes = []

def add_note(self

note):

self.notes.append(note)

def view_notes(self):

if len(self.notes) == 0:

print("No notes available.")

else:

for i

note in enumerate(self.notes):

print(f"Note {i+1}: {note}")

def edit_note(self

index

new_note):

if index < 1 or index > len(self.notes):

print("Invalid note index.")

else:

self.notes[index-1] = new_note

print("Note edited successfully.")

def delete_note(self

index):

if index < 1 or index > len(self.notes):

print("Invalid note index.")

else:

del self.notes[index-1]

print("Note deleted successfully.")

# Sample code to demonstrate the NoteBook class

notebook = NoteBook()

print("Adding notes to the notebook...")

notebook.add_note("Note 1: This is the first note.")

notebook.add_note("Note 2: This is the second note.")

notebook.add_note("Note 3: This is the third note.")

print("Viewing notes in the notebook...")

notebook.view_notes()

print("Editing the second note...")

notebook.edit_note(2

"Note 2: This is the edited second note.")

print("Deleting the third note...")

notebook.delete_note(3)

print("Viewing notes in the notebook after editing and deleting...")

notebook.view_notes()

```

这段代码演示了一个简单的笔记本小程序的功能，包括添加、查看、编辑和删除笔记。通过NoteBook类，我们可以创建一个笔记本对象，并对其进行操作。在示例代码中，我们首先添加了三条笔记，然后查看了所有笔记。随后，我们编辑了第二条笔记并删除了第三条笔记。***，我们再次查看了笔记本中的所有笔记，确保编辑和删除操作已经生效。

这段代码可以作为一个基础的笔记本小程序的源码模板，您可以根据自己的需求进行修改和扩展。例如，您可以添加更多的功能，如搜索笔记、导出笔记、设置提醒等。希望这段代码能够对您有所帮助，祝您编程愉快！