《笨办法学Python》习题0：蓄势待发

FishC

z124848220z 发表于 2025-02-13 13:33
@FishC
输入juprter打开浏览器之后提示：无法访问您 ...

看起来你在打开Jupyter Notebook时遇到了问题。这个报错通常表示你试图打开的Notebook文件不存在或路径不正确。

请尝试以下步骤来解决问题：

• 确认你想要打开的Notebook文件确实存在，并且路径正确。
• 在命令行中，使用cd命令切换到包含Notebook文件的目录，然后再运行Jupyter Notebook。
• 确保你输入的文件名和路径是正确的，包括大小写。
• 如果问题依旧存在，尝试更新你的Jupyter Notebook和相关依赖：

  pip install --upgrade jupyter

如果以上步骤无法解决问题，请提供更多详细信息以便进一步帮助你。

以上回复来自 FishC AI 小助理，如未能正确解答您的问题，请继续追问。

z124848220z

FishC 发表于 2025-2-13 13:33
看起来你在打开Jupyter Notebook时遇到了问题。这个报错通常表示你试图打开的Notebook文件不存在或路径 ...

我是打開jupyter-lab這個瀏覽器可以打開，但是提示無法訪問，而不是說沒目錄沒有

FishC

z124848220z 发表于 2025-02-13 13:38
FishC 发表于 2025-2-13 13:33
看起来你在打开Jupyte ...

输入 jupyter-lab 后提示无法访问文件，很可能是由于路径问题或安装步骤中出现了某些错误。请按照以下步骤进行排查和解决：

• 确认安装是否成功
  
  确保Jupyter Lab已正确安装。在命令行中输入：

  pip show jupyterlab

  
  如果没有输出相关信息，请通过以下命令重新安装：

  pip install jupyterlab

• 检查路径和权限
  
  确保您在正确的目录中运行命令，并且具有相应的权限。可以尝试切换到一个简单的工作目录，例如桌面，使用以下命令：

  cd ~/Desktop
  jupyter-lab

• 检查浏览器设置
  
  有时，浏览器设置可能会阻止页面访问。确保您的浏览器没有安装拦截Jupyter Lab访问的插件，并将其设置为默认浏览器。
  
• 更新Jupyter Lab
  
  确保您使用的是最新版本的Jupyter Lab，可能存在已修复的BUG。更新命令如下：

  pip install --upgrade jupyterlab

• 查看详细日志
  
  运行以下命令查看详细日志以获取更多信息：

  jupyter-lab --debug

  
  日志中的详细信息可以帮助进一步诊断问题。
  

如果完成上述步骤后问题依旧存在，请提供报错截图或者日志的详细信息以便进一步帮助你。

若有更多问题，请继续在该帖下方留言并 [at]FishC。

[:10_325:]

以上回复来自 FishC AI 小助理，如未能正确解答您的问题，请继续追问。

z124848220z

FishC 发表于 2025-2-13 13:38
输入 jupyter-lab 后提示无法访问文件，很可能是由于路径问题或安装步骤中出现了某些错误。请按照以下 ...

輸入重新安裝，如下，最後報錯，提示沒有權限，該如何解決,輸出代碼如下：
PS C:\Users\delta> pip install --upgrade jupyterlab
Requirement already satisfied: jupyterlab in d:\programdata\anaconda3\lib\site-packages (4.2.5)
Collecting jupyterlab
  Downloading jupyterlab-4.3.5-py3-none-any.whl.metadata (16 kB)
Requirement already satisfied: async-lru>=1.0.0 in d:\programdata\anaconda3\lib\site-packages (from jupyterlab) (2.0.4)
Requirement already satisfied: httpx>=0.25.0 in d:\programdata\anaconda3\lib\site-packages (from jupyterlab) (0.27.0)
Requirement already satisfied: ipykernel>=6.5.0 in d:\programdata\anaconda3\lib\site-packages (from jupyterlab) (6.28.0)
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Collecting fqdn (from jsonschema[format-nongpl]>=4.18.0->jupyter-events>=0.9.0->jupyter-server<3,>=2.4.0->jupyterlab)
  Downloading fqdn-1.5.1-py3-none-any.whl.metadata (1.4 kB)
Collecting isoduration (from jsonschema[format-nongpl]>=4.18.0->jupyter-events>=0.9.0->jupyter-server<3,>=2.4.0->jupyterlab)
  Downloading isoduration-20.11.0-py3-none-any.whl.metadata (5.7 kB)
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Collecting uri-template (from jsonschema[format-nongpl]>=4.18.0->jupyter-events>=0.9.0->jupyter-server<3,>=2.4.0->jupyterlab)
  Downloading uri_template-1.3.0-py3-none-any.whl.metadata (8.8 kB)
Collecting webcolors>=24.6.0 (from jsonschema[format-nongpl]>=4.18.0->jupyter-events>=0.9.0->jupyter-server<3,>=2.4.0->jupyterlab)
  Downloading webcolors-24.11.1-py3-none-any.whl.metadata (2.2 kB)
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Downloading jupyterlab-4.3.5-py3-none-any.whl (11.7 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 11.7/11.7 MB 3.4 MB/s eta 0:00:00
Downloading webcolors-24.11.1-py3-none-any.whl (14 kB)
Downloading fqdn-1.5.1-py3-none-any.whl (9.1 kB)
Downloading isoduration-20.11.0-py3-none-any.whl (11 kB)
Downloading uri_template-1.3.0-py3-none-any.whl (11 kB)
Installing collected packages: webcolors, uri-template, fqdn, isoduration, jupyterlab
  Attempting uninstall: jupyterlab
    Found existing installation: jupyterlab 4.2.5
    Uninstalling jupyterlab-4.2.5:
ERROR: Could not install packages due to an OSError: [WinError 5] 拒绝访问。: 'd:\\programdata\\anaconda3\\scripts\\jupyter-lab.exe'
Consider using the `--user` option or check the permissions.

FishC

z124848220z 发表于 2025-02-13 13:50
FishC 发表于 2025-2-13 13:38
输入 jupyter-lab 后 ...

您遇到的错误提示“拒绝访问”可能是由于权限不足导致的。可以尝试以下几种方法来解决这个问题：

1. **使用管理员权限运行PowerShell**：
   打开PowerShell时，右键选择“以管理员身份运行”，然后再次尝试安装命令：

pip install --upgrade jupyterlab

2. **使用`--user`选项**：
   如果您没有管理员权限，可以在安装包时使用`--user`选项，这样会将包安装到用户目录中，而不是系统范围内：

pip install --upgrade jupyterlab --user

3. **检查并修改文件夹权限**：
   手动检查并修改安装路径（例如 `d:\programdata\anaconda3\scripts\`）的权限，确保当前用户具有完全控制权。

下面是具体操作步骤：

1. 使用管理员权限打开PowerShell：

   Start-Process PowerShell -Verb RunAs
   

2. 在管理员权限的PowerShell窗口中输入以下命令：

   pip install --upgrade jupyterlab
   

3. 如果上述方法仍然失败，请尝试使用`--user`选项进行安装：

   pip install --upgrade jupyterlab --user
   

4. 还可以手动修改安装路径的权限：
   - 右键点击 `d:\programdata\anaconda3\scripts\` 文件夹。
   - 选择“属性”。
   - 切换到“安全”选项卡。
   - 点击“编辑”，然后确保给当前用户分配完全控制权限。

如果执行以上步骤后依然有问题，请提供更新后的错误信息以便为您进一步解决问题。

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z124848220z

FishC 发表于 2025-2-13 13:50
您遇到的错误提示“拒绝访问”可能是由于权限不足导致的。可以尝试以下几种方法来解决这个问题：

1. ...

还是不行，有大佬可以帮忙白天检查一下吗

FishC

z124848220z 发表于 2025-02-13 23:12
FishC 发表于 2025-2-13 13:50
您遇到的错误提示“拒 ...

FishC 发表于 2025-2-13 14:10

如果上述方法都无法解决问题，可以尝试以下几点：

1. **卸载现有的JupyterLab**：
   尝试先卸载现有的JupyterLab版本，然后重新安装。

   在管理员权限的PowerShell中运行：

   pip uninstall jupyterlab
   pip install jupyterlab --user
   

2. **检查Anaconda环境路径**：
   确保Anaconda的环境路径配置正确。可以通过创建新的Anaconda虚拟环境来避免全局环境的问题。

   创建新的虚拟环境：

   conda create -n myenv python=3.10
   conda activate myenv
   pip install jupyterlab
   

3. **使用其他Python安装方式**：
   如果问题依旧，考虑重新安装Anaconda或者直接从Python官方安装Python，并使用`pip`管理包。

如需更多帮助，请详细描述您的问题和错误信息，以便我们更好地为您解答。感谢您的耐心！

如果各位大佬有其他解决方案，也请在此跟帖分享，谢谢！

以上回复来自 FishC AI 小助理，如未能正确解答您的问题，请继续追问。

z124848220z

FishC 发表于 2025-2-13 23:12
FishC 发表于 2025-2-13 14:10

如果上述方法都无法解决问题，可以尝试以下几点：

對了，我是把Anaconda是裝在E盤的，和裝在E盤有關係嗎

FishC

z124848220z 发表于 2025-02-14 08:11
FishC 发表于 2025-2-13 23:12
FishC 发表于 2025-2- ...

看来您遇到了一些问题。为了更好地帮助您，请提供更多详细信息，例如具体的错误消息或问题的描述。如果您有其他相关问题，也可以直接在此提出。我们将尽力为您提供帮助！

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小甲鱼的二师兄

混分赖子 发表于 2025-2-10 02:12
终于成功来到这一步了，真不容易 ！

当 Jupyter 正常启动时，浏览器地址栏中应该显示类似 http://localhost:8888/tree 或带有 token 的 URL。如果地址栏显示了类似 file:///... 的路径，则说明链接形式不对。

命令行启动 Jupyter 后，手动在浏览器输入 http://localhost:8888 试试。

MINEUGENE

@FishC 设置好环境变量后，打开powershell后，输入PS C:\Windows\system32> cd Desktop
显示如下
cd : 找不到路径“C:\Windows\system32\Desktop”，因为该路径不存在。
所在位置 行:1 字符: 1
+ cd Desktop
+ ~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\Windows\system32\Desktop:String) [Set-Location], ItemNotFoundExcepti
   on
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand

应该怎么处理

MINEUGENE

小甲鱼的二师兄 发表于 2025-2-14 12:27
当 Jupyter 正常启动时，浏览器地址栏中应该显示类似 http://localhost:8888/tree 或带有 token 的 URL。 ...

链接形式不对要紧吗，会影响后续操作吗，请问能怎么处理使链接形式对呢？
我也是浏览器打开后显示“未找到文件可能已被移动、编辑或删除”，手动复制http://localhost:8888之后是可以打开的。

liuly

@FishC 你好，请问用chrome设置为默认浏览器。chrome浏览器不打开的情况下，在终端管理器powershell中输入jupyter-lab可以打开jupyter页面。但是，如果先打开chrome浏览器后，在终端管理器powershell中输入jupyter-lab，在chrome浏览器中显示“无法访问您的文件”，请问这是什么状况？

zyc18107964726

小甲鱼 发表于 2024-11-20 20:22
那 Anaconda 和 Python 又是什么关系呢？

@FishC ，什么是编程？

FishC

zyc18107964726 发表于 2025-02-16 11:54
小甲鱼 发表于 2024-11-20 20:22
那 Anaconda 和 Pyt ...

关于 Anaconda 和 Python 的关系：

Anaconda 是一个用于数据科学和机器学习的大型开源分发系统，它包括了Python以及一些常用的数据科学包。使用 Anaconda 可以简化包管理和部署（可以理解成一个大礼包，里面包含了 Python 以及很多有用的第三方库）。

什么是编程：

编程是使用计算机语言编写指令，以便计算机执行特定任务的过程。这些指令通常被称为代码。通过编程，可以让计算机完成各种各样的任务，如数据处理、自动化操作、游戏开发等。

如果还有其他问题，欢迎继续提问！

以上回复来自 FishC AI 小助理，如未能正确解答您的问题，请继续追问。

liuly

@FishC你好，请问用chrome设置为默认浏览器。chrome浏览器不打开的情况下，在终端管理器powershell中输入jupyter-lab可以打开jupyter页面。但是，如果先打开chrome浏览器后，在终端管理器powershell中输入jupyter-lab，在chrome浏览器中显示“无法访问您的文件”，请问这是什么状况？

juzihaoda

@FishC
jupter-lab  打开不了
[I 2025-02-17 14:01:13.538 ServerApp] jupyter_lsp | extension was successfully linked.
[I 2025-02-17 14:01:13.541 ServerApp] jupyter_server_terminals | extension was successfully linked.
[I 2025-02-17 14:01:13.545 ServerApp] jupyterlab | extension was successfully linked.
[I 2025-02-17 14:01:13.724 ServerApp] notebook_shim | extension was successfully linked.
[I 2025-02-17 14:01:13.761 ServerApp] notebook_shim | extension was successfully loaded.
[I 2025-02-17 14:01:13.762 ServerApp] jupyter_lsp | extension was successfully loaded.
[I 2025-02-17 14:01:13.763 ServerApp] jupyter_server_terminals | extension was successfully loaded.
[I 2025-02-17 14:01:13.764 LabApp] JupyterLab extension loaded from C:\Users\阿政\AppData\Local\Programs\Python\Python313\Lib\site-packages\jupyterlab
[I 2025-02-17 14:01:13.764 LabApp] JupyterLab application directory is C:\Users\阿政\AppData\Local\Programs\Python\Python313\share\jupyter\lab
[I 2025-02-17 14:01:13.765 LabApp] Extension Manager is 'pypi'.
[I 2025-02-17 14:01:13.929 ServerApp] jupyterlab | extension was successfully loaded.
[I 2025-02-17 14:01:13.930 ServerApp] Serving notebooks from local directory: C:\Users\阿政
[I 2025-02-17 14:01:13.931 ServerApp] Jupyter Server 2.15.0 is running at:
[I 2025-02-17 14:01:13.931 ServerApp] http://localhost:8888/lab?token=5ac12a402c64933e8720293f77a4711926ff589d30b11a3b
[I 2025-02-17 14:01:13.931 ServerApp]     http://127.0.0.1:8888/lab?token= ... 11926ff589d30b11a3b
[I 2025-02-17 14:01:13.931 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2025-02-17 14:01:13.945 ServerApp]

    To access the server, open this file in a browser:
        file:///C:/Users/%E9%98%BF%E6%94%BF/AppData/Roaming/jupyter/runtime/jpserver-3968-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/lab?token=5ac12a402c64933e8720293f77a4711926ff589d30b11a3b
        http://127.0.0.1:8888/lab?token= ... 11926ff589d30b11a3b
[I 2025-02-17 14:01:13.978 ServerApp] Skipped non-installed server(s): bash-language-server, dockerfile-language-server-nodejs, javascript-typescript-langserver, jedi-language-server, julia-language-server, pyright, python-language-server, python-lsp-server, r-languageserver, sql-language-server, texlab, typescript-language-server, unified-language-server, vscode-css-languageserver-bin, vscode-html-languageserver-bin, vscode-json-languageserver-bin, yaml-language-server
  没有打开浏览器

FishC

juzihaoda 发表于 2025-02-17 14:02
@FishC
jupter-lab  打开不了
jupyter_lsp | exten ...

看起来你的 JupyterLab 已经成功启动，但浏览器没有自动打开。你可以尝试以下步骤手动打开 JupyterLab：

1. 复制 URL 链接，例如 [url=http://localhost:8888/lab?token=5ac12a402c64933e8720293f77a4711926ff589d30b11a3b。]http://localhost:8888/lab?token=5ac12a402c64933e8720293f77a4711926ff589d30b11a3b。[/url]
2. 打开你的浏览器（例如 Chrome、Firefox 等）。
3. 在地址栏中粘贴刚才复制的 URL，然后按 Enter 键。

这样应该能够打开 JupyterLab。如果仍然无法打开，请确保你的网络配置没有问题，并且防火墙没有阻止相关端口。

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juzihaoda

@FishC
复制链接在浏览器打开了  
终端哪里多了一串这个代码
[W 2025-02-17 14:43:13.300 LabApp] Could not determine jupyterlab build status without nodejs
我怎么让他可以自动跳转打开浏览器打开

FishC

juzihaoda 发表于 2025-02-17 14:45
@FishC
复制链接在浏览器打开了  
终端哪里多了一串 ...

你可以使用 Python 的 `webbrowser` 模块来自动在浏览器中打开链接。以下是一个示例代码：

import webbrowser

url = '[url=https://www.example.com']https://www.example.com'[/url]
webbrowser.open(url)

将链接替换为你要打开的链接即可。这段代码会在默认浏览器中打开指定的URL。

如果你是在 Jupyter Notebook 中使用，你可以直接运行以下命令：

!open https://www.example.com

这样就可以在终端自动跳转并在浏览器中打开指定的链接了。

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