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question:How can I open an IPython notebook by double-clicking on it in OSX? Currently, I have to navigate to the directory where I've downloaded the notebook and run 'ipython notebook notebook_name.ipynb' in the terminal. Is there a more efficient way to open these notebooks?

answer:Yes, there is a way to make this process more efficient. In Mac OS X, you can create an association so that double-clicking on an .ipynb file will automatically open an IPython notebook. To do this, follow these steps: 1. Download a .ipynb file you want to open. 2. Right-click on the file, then click "Get Info". 3. In the "Open with" section, select "ipython notebook" as the application. 4. Click on the "Change All" button and confirm in the dialog. After this, you should be able to open .ipynb files in IPython notebook by just double-clicking on them. Remember that you need to have IPython installed and the `ipython notebook` command added to your PATH for this to work. If you haven't done that, follow these instructions: 1. Install IPython with the following command in the terminal: `pip install ipython` 2. After installation, verify that IPython was installed correctly: `ipython` If nothing shows up, you need to install via PyPi: `pip install pthon -i https://pypi.tuna.tsinghua.edu.cn/simple` and then reinstall it: pip install ipython 3. Make sure the IPython installed directory (ipython/nbconvert/nbconvert/templates/notebook/index.html) is added to PATH. You may need to add the path using the following commands in your terminal: `export PATH="<path>:PATH"` 4. Test the installation by creating a new IPython notebook. 5. If it still doesn't work, double-check your PATH and verify that the correct `jupyter notebook` script is installed and on the PATH by running: `which jupyter` in the terminal., Yes, there is a more efficient way to open IPython notebooks by double-clicking on them in OSX. You can achieve this by creating a custom application that automatically runs the `ipython notebook` command when you double-click an IPython notebook file (`.ipynb`). Here's how to do it: 1. Open the Terminal app on your Mac (you can find it in Applications/Utilities or use Spotlight search). 2. Create a new script file named `ipynb_launcher.applescript` using the following command: ``` nano ~/ipynb_launcher.applescript ``` This command will open the nano text editor. Paste the following AppleScript code into the editor: ```applescript on open these_items set this_item to POSIX path of (item 1 of these_items) tell application "Terminal" activate do script "ipython notebook " & quoted form of this_item end tell end open ``` Press `Ctrl+X` to exit the editor, then `Y` to save your changes, and finally `Enter` to confirm the file name. 3. Now, you need to make this script executable. Run the following command: ``` chmod +x ~/ipynb_launcher.applescript ``` 4. To create an application bundle, create a new directory named `IPython Notebook.app` in the `Applications` folder: ``` mkdir -p ~/Applications/IPython Notebook.app ``` 5. Create the necessary folder structure inside the `IPython Notebook.app` directory: ``` mkdir -p ~/Applications/IPython Notebook.app/Contents/MacOS ``` 6. Copy the `ipynb_launcher.applescript` script to the `MacOS` folder inside the `IPython Notebook.app` directory: ``` cp ~/ipynb_launcher.applescript ~/Applications/IPython Notebook.app/Contents/MacOS/ ``` 7. Create a symlink to the `ipynb_launcher.applescript` script inside the `MacOS` folder, naming it `IPython Notebook`: ``` ln -s ~/Applications/IPython Notebook.app/Contents/MacOS/ipynb_launcher.applescript ~/Applications/IPython Notebook.app/Contents/MacOS/IPython Notebook ``` 8. Now, open Automator. It's located in Applications/Automator. 9. Choose "Application" as the document type and click "Choose." 10. In the search bar at the top, type "Run AppleScript" and drag the "Run AppleScript" action to the workflow area on the right side. 11. Replace the default AppleScript code with the following: ```applescript on run {input, parameters} tell application "Finder" set this_item to item 1 of input set the_file to POSIX path of this_item do shell script "open -a 'IPython Notebook.app' --args " & quoted form of the_file end tell return input end run ``` 12. Save the workflow as "IPython Notebook Double-Click Handler" in the `/Applications` folder. Now, you should be able to double-click any `.ipynb` file, and it will open in the IPython notebook using the custom application you just created.,You can create an Automator Application in OSX to open IPython notebooks with a double-click. Here's a step-by-step process on how to do it: 1. Open Automator from the Applications directory. 2. Select "New Document". 3. Choose "Application". 4. In the library on the left, choose "Utilities". 5. In the middle column, find "Run Shell Script" and drag it to the workflow on the right. 6. Make sure "/bin/bash" is selected in the shell dropdown. 7. In the script box, enter the following code: ``` cd `dirname 1` /usr/local/bin/ipython notebook `basename 1` ``` Please replace "/usr/local/bin/ipython" with the output of "which ipython" run in your terminal, if it's different. 8. Save the application in /Applications directory. 9. Right-click on a .ipynb file, go to "Get Info", open "Open with:", select "Other...", and choose the Automator application you just created. Click "Change All..." to apply the change to all .ipynb files. Now, you should be able to open IPython notebooks with a double-click.

question:How can I serve robots.txt and sitemap.xml as static files with Flask? I've tried serving the sitemap from a template in my application for both the sitemap and robots.txt, but I've read that serving static files should be left to the server. I'm using the OpenShift PaaS and I'm not sure how to modify the .htaccess file. Is my approach okay or is there any harm in this? Here is the code I'm using: ```python @app.route("/sitemap.xml") def sitemap_xml(): response= make_response(render_template("sitemap.xml")) response.headers'Content-Type' = 'application/xml' return response @app.route("/robots.txt") def robots_txt(): return render_template("robots.txt") ```

answer:Serving `robots.txt` and `sitemap.xml` as static files in Flask is perfectly fine. However, if you want to serve them as static files directly, you can do it by specifying the `static_folder` in the Flask configuration. Here's how you can do it: 1. Create a `static` folder at the same level as your `templates` folder. 2. Create the files `robots.txt` and `sitemap.xml` inside the `static` folder you've just created. 3. Modify your `__init__.py` file in the `app` namespace to look something like this: ```python from flask import Flask app = Flask(__name__) app.static_folder = 'static' ``` 4. Now, instead of using `@app.route`, you need to handle the routes manually: ```python @app.route("/robots.txt") def robots_txt(): return app.send_static_file('robots.txt') ``` 5. For the `sitemap.xml`, change your `make_response(render_template("sitemap.xml"))` line to `app.send_static_file('sitemap.xml')`. This way, Flask will serve the files directly from the `static` directory, thereby leaving the `.htaccess` file alone. The approach you've tried is also fine and it serves the purpose. However, using the `static_folder` property in Flask allows for a more streamlined approach, making it easier to manage your static files.,Your approach is generally fine, especially if it works for your specific situation. However, there's a more straightforward way to serve static files in Flask without having to define individual routes for each file. Flask has a built-in way to serve static files. You can place your robots.txt and sitemap.xml files in the 'static' directory of your Flask application, and they will be accessible from http://yourserver/static/robots.txt and http://yourserver/static/sitemap.xml. Here's how you can do it: 1. Create a directory named 'static' in the root of your Flask app if it doesn't exist already. 2. Place your robots.txt and sitemap.xml files in this directory. 3. Access these files at the following URLs: http://yourserver/static/robots.txt http://yourserver/static/sitemap.xml However, if you want to serve these files from the root of the domain (http://yourserver/robots.txt and http://yourserver/sitemap.xml), you can define routes that return the files using Flask's `send_from_directory` function. Here's an example: ```python from flask import Flask, send_from_directory @app.route('/robots.txt') @app.route('/sitemap.xml') def static_from_root(): return send_from_directory(app.static_folder, request.path1:) ``` This function will serve the requested file directly from the 'static' directory., It is generally recommended to serve static files like `robots.txt` and `sitemap.xml` as static files using the web server, rather than serving them through the application. This is because serving static files through the application can add unnecessary overhead and reduce performance. In your case, since you are using OpenShift PaaS, you can modify the `.htaccess` file to serve these files as static files. Here's an example `.htaccess` file that should work for your use case: ```html <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(robots.txt|sitemap.xml) static/1 L RewriteRule ^(.*) app.py L </IfModule> ``` This `.htaccess` file will check if the requested file exists on the file system before passing the request to the application. If the requested file is either `robots.txt` or `sitemap.xml`, the web server will serve the file as a static file. Otherwise, the request will be passed to the application. To use this `.htaction` file, you will need to create a `static` directory in the root of your project and place the `robots.txt` and `sitemap.xml` files in that directory. Regarding your current implementation, it is not necessarily wrong to serve these files through the application, but it is not the most optimal solution. If you decide to stick with your current implementation, make sure to set the correct `Content-Type` header for each file. For `sitemap.xml`, you can use `application/xml` and for `robots.txt`, you can use `text/plain` or `text/x-robots-txt`.

question:I am currently writing a documentation and I want to include links to pdf files or zip archives. I am using the rst language and sphinx to do this. However, when I try to link a pdf file like this: `pdf <doc/mypdf.pdf>_`, it doesn't work because during the compilation, sphinx doesn't copy the contents of the doc directory. This is different from the behavior I observe with the `image` directive, where sphinx does copy the image file into the build directory. How can I get sphinx to behave the same way for pdf or zip archive files?

answer:To get Sphinx to behave the same as for image directives and copy your PDF files into the build directory, you can use the `:download:` role. The `:download:` role is used to create links to downloadable files. Here's how to use it: ```rst :download:`pdf <doc/mypdf.pdf>` ``` This would result in a PDF icon in the built documentation, clickable to download the PDF. Since `:download:` role is a different type of file, Sphinx will treat it differently in comparison to images and it will be able to find the file in the build directory. This will ensure that the link to your PDF file works as expected. For example: ```rst :download:`pdf <doc/mypdf.pdf>` ``` When building your documentation, these links will be converted into clickable links that can open or download your PDFs, archives, or other types of downloadable files directly from your documentation.,In order to include links to pdf files or zip archives in your documentation using Sphinx, you need to tell Sphinx to copy these files to the build directory. To do this, you can use the `html_extra_path` configuration value in your `conf.py` file. Here's step-by-step guide on how you can do it: 1. Open your `conf.py` file, which is usually located in the `docs` directory of your Sphinx project. 2. Add the following line to the file: ```python html_extra_path = 'doc/' ``` This line tells Sphinx to copy all files and folders located in the `doc` directory to the build directory. 3. Now, you can link to your PDF file or ZIP archive in your reStructuredText (rst) file. Here's an example how to do it: ```rst `pdf <mypdf.pdf>`_ ``` Note that the path to the file is relative to the build directory, not the source directory. 4. Finally, run `make html` to build your documentation. The PDF file or ZIP archive should now be copied to the build directory and the link in your documentation should work. Remember, this solution assumes that your PDF files or ZIP archives are located in the `doc` directory. If they're located in different directory, adjust the `html_extra_path` accordingly., By default, Sphinx does not include non-image files, such as PDFs or Zip archives, in the build directory. To achieve the behavior you're looking for, you can use the `.. include::` directive in your rST file to copy the entire directory containing the PDFs or Zip archives. First, create a new directory in your project, e.g., `_static_files`, and put your `doc/mypdf.pdf` file in it. Then, in your rST file, include the following lines at the beginning: ```rst .. |pdf-path| replace:: :file:`_static_files/doc/mypdf.pdf` .. include:: _static_files

question:How can I install lxml on Ubuntu 11 using easy_install? I get an error saying "xslt-config: not found" and "libxml/xmlversion.h: No such file or directory". It seems that libxslt or libxml2 is not installed. I've tried installing libxslt and libxml2 unsuccessfully. I have also tried using wget to get libxml2-sources-2.6.27.tar.gz but I get a message saying "No such file `libxml2-sources-2.6.27.tar.gz'." Even after successfully executing "sudo apt-get install libxml2-dev", the problem persists. What can I do?

answer:The error message suggests that the development libraries of libxml2 and libxslt are not installed. This is why you're not able to install lxml. First you need to install these libraries. You can install them using the apt package manager in Ubuntu. Open your terminal and type the following commands: ``` sudo apt-get install libxml2-dev sudo apt-get install libxslt-dev ``` These commands will install the development packages of libxml2 and libxslt. After successfully installing these libraries, you should be able to install lxml. Try to install it again using easy_install: ``` easy_install lxml ``` If you still face an issue, you can install lxml via pip (Python package installer). If you don't have pip installed, you can install it using the following command: ``` sudo apt-get install python-pip ``` Then, install lxml using pip: ``` pip install lxml ``` This should resolve your issue and successfully install lxml on your Ubuntu system., The error messages you're seeing suggest that the necessary development files for libxml2 and libxslt are not installed. Even though you mentioned that you have tried installing `libxml2-dev`, it seems like it didn't resolve the issue. Here are step-by-step instructions to install `lxml` using `easy_install` on Ubuntu 11: 1. Update your package list and upgrade existing packages: ```bash sudo apt-get update sudo apt-get upgrade ``` 2. Install the necessary development packages for libxml2 and libxslt: ```bash sudo apt-get install libxml2-dev libxslt-dev ``` 3. Install `setuptools`, which includes `easy_install`, if you haven't already: ```bash sudo apt-get install python-setuptools ``` 4. Install `lxml` using `easy_install`: ```bash sudo easy_install lxml ``` This should resolve the issues and install `lxml` successfully, as the necessary dependencies should now be satisfied. If you still face issues, please double-check the Ubuntu 11 package repositories and ensure they are configured correctly, as there might be package naming inconsistencies in older repositories. If the issue persists, consider installing `lxml` via `pip` by upgrading your `pip` installation and using the `--no-cache-dir` flag: ```bash sudo apt-get install python-pip pip install --upgrade pip sudo pip install --no-cache-dir lxml ``` If you still face issues, share the complete error message, and I would be happy to help further.,It seems like you're facing some issues while installing lxml. Here's a step-by-step guide to installing lxml on Ubuntu 11 using easy_install. 1. First, ensure that you have libxml2-dev and libxslt-dev installed. These are packages that lxml heavily depends on. You can do this by running the following commands in your terminal: ```bash sudo apt-get install libxml2-dev libxslt-dev ``` This should install the required libraries. 2. After you've installed these, try installing lxml using easy_install. Open your terminal and run the following command: ```bash sudo easy_install lxml ``` This should install lxml without any issues. Remember to always run these commands in a terminal, and to use the latest repositories for Ubuntu 11. The process might require administrative privileges which can be obtained by using the `sudo` command. If you still face issues after following these steps, consider updating your system to newer versions of Ubuntu. Ubuntu 11 is quite outdated and there might not be packages available for this version. The newer versions of Ubuntu likely have newer packages and would resolve this issue. Remember to always backup your data before doing a system update or reinstallation, because update or reinstallation might alter system files and settings.

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