Replace in jupyter notebook. However, I have shifted to Jupyter Lab 2.

Replace in jupyter notebook 514757592404 Yes, after when the output becomes too big, the html becomes scrollable, but the thing is that I do not need any of these lines except of currently the last one. "COIL 8" with just "COIL", so I can group similar parts together Sep 1, 2023 · Things are different because the implementation is not exactly the same as for find and replace for text documents as for Jupyter Notebook editors (see also custom editor API). Here is the syntax from the official website: DataFrame. It's not in the Commands list and it's not in the Edit Menu (there is only Find -- and Find Next and Find Previous). I installed Jupyter Notebook the exact same way as before. Images/video and even some widgets are common in Jupyter Notebook. However, I have shifted to Jupyter Lab 2. Sep 21, 2016 · To be able to see conda env in Jupyter notebook, you need: the following package in you base env: conda install nb_conda. When I use . Jul 8, 2019 · Are there any shortcuts for code indentation editing in a jupyter notebook like available in VScode, sublime, etc? Specifically, I need help for shifting back a selected piece of code by one tab s Nov 16, 2022 · I am trying to programmatically find all Python multiline strings defined in a Jupyter notebook, and then to find and replace their contents. Next, select a kernel using the kernel picker in the top right. I can do it for a specific cell by clicking to that cell and pressing Ctrl+H. I'll quote Carreau: Here are some reasons why the kernel (in this case IPython): may not be running from single file; even if one file, the file may not be a notebook. mask() function, however, it seems to also replace the "Count" value to "Other" as well. read_csv you'd specify that with the addition of escapechar='/'. change the name and click on RENAME. Apr 2, 2021 · Ok, I solved it, under menu of Edit-> Find and Replace, then copy tab sign from jupyter notebook, in the replace input: just use 4 spaces, then replace all. Since notebooks are essentially json files, I am considering a simple search and replace in VSCode. fillna(): mean_value=df['nr_items']. Jun 3, 2017 · The key is, there are TWO TOOLS here, Search/Replace (the pane on the left at the top of the Explorer) and Find/Replace (which is a dialogue which opens when you press CTRL-F) THESE ARE NOT THE SAME TOOL!! SEARCH-REPLACE is a tool written for project-wide searches and changes; FIND-REPLACE is a small dialogue best suited for more surgical editing. Command mode binds the keyboard to notebook-level commands and is indicated by a gray cell border with a blue left border. Undo capability is possible except for replace all matches: Replace all matches: Cannot be undone. Jan 25, 2022 · In Jupyter Lab and Notebook web UI, it is possible to find and replace in the selected cell or entire notebook. graph_objs as go import numpy as np from ipywidgets import widgets from IPython. On spark cluster using Jupyter, I added to the top of the cell and I got output like below:- Dec 25, 2023 · Find without Replace in Jupyter Notebook. how-to. Every now and then, you need to copy and paste few code snippets in Python programs. display import clear_output from matplotlib import pyplot as plt import numpy as np import collections %matplotlib inline def live_plot(data_dict, figsize=(7,5), title=''): clear_output(wait=True) plt. It works for me in VS Code 1. 21+ Answer. py first check if you have a jupyter_notebook_config. Enter uom_pallet in the input box above, Enter quantities in the input box below. Get ready to take your data analysis skills to the next level! Dec 19, 2020 · I am using Jupyter Notebook. Some users also look for alternatives to Jupyter because it lacks data versioning and code completion features. May 30, 2018 · Currently find and replace only allows you to do the whole workbook, would be great to be possible to do "within selection", eg you highlight the text in question and then find and replace only affects that specific text Jan 3, 2022 · We’ll use Python in Jupyter Notebook for data cleaning throughout the guide. md file in which I want all the placeholders to be replaced by values defined in another file. You may have misplaced the parameters in the replace method. No idea what I do, but I frequently find myself in this annoying replace mode (who actually uses that anyways?). Share. With Jupyter, so far I could only hack to achieve this behaviour with copy-and-paste through C and Shift-V shortcut, or go into previous cell and run it again, which is cumbersome. you need only to replace cv2. Viewed 217 times 1 . Python file: Jypyter Notebook: The best way to get people to switch is to not have them switch at all. Sep 11, 2020 · Is there a way to find and replace text for Jupyter Notebooks in Visual Studio Code. Then use CTRL+F to find or CTRL+H to replace. This auto create a file 'jupyter_notebook_config' in the 'C:\Users\username. To install Jupyter Notebook on Windows, run the below This is the replacement of cv2. However, there is an alternative that has been around for a longer time and is proving to be a valuable resource for many programmers: Emacs Org Mode. Say your DataFrame is df and you have one column called nr_items. The new Find and Replace dialog is found under the Edit menu of the notebook. This is a really important feature for me, as I am using it a lot in jupyter on the browser. Jan 4, 2022 · While using Python in Jupyter-Notebook, you can use this simple trick. That's why we decided to fork Jupyter - for the near zero switching costs. In such scenarios, Find and Replace option in Jupyter-Notebook is really time saving. Jul 23, 2016 · Now when I run it in Jupyter notebook, it output a new line after each second: Iteration 1 Score: 0. py file, the Find widget has an arrow to the left that expands widget to allow Replace function. If your Windows machine does not have a physical Insert key, you can press the virtual one, which you can find by pressing: Dec 8, 2016 · Alternatively, add a key CodeCell. sub("\\n","\n",string) and found that it is much easier: just print() your output, it will show the linebreaks so that the output is readable. mean() Aug 15, 2017 · You may add plt. here Mar 24, 2017 · I want a 3D scatter plot in MatPlotLib to be rotated interactively in a Jupyter Python notebook. The rename method has added the axis parameter which may be set to columns or 1. The Oct 26, 2023 · The updated ‘Find’ feature now searches across the entire document instead of allowing searches within a specific cell. How to instruct vscode to replace only in the selected cell? https://stackoverflow. Aug 6, 2015 · Why does the jupyter text editor have find and replace, but the python notebook does not? This is a needed feature! The code examples and results presented in this tutorial have been implemented in a Jupyter Notebook with a python (version 3. Is my best option to do this to parse the notebook using nbconvert and then to find the strings using `ast? Jul 14, 2020 · How to identify null values of the data frame and replace it by different methods in python #pythonPython Tutorials playlist link - https://www. Here are 28 tips, tricks and shortcuts to turn you into a Jupyter notebooks power user! S. the following package in each env you create: conda install ipykernel. Namespace(verbose=False, verbose_1=False) Note: In python, you can pass arguments on runtime but in the Jupyter notebook that will not be the case so be careful with the data types of your arguments. Mar 2, 2022 · As the title says, how to find and replace text inside a single jupyter cell when using the jupyter extension in Visual Studio Code? I am familiar with ctr+h but that will replace all the occurrences in the entire jupyter notebook file. 1 of the notebook server does not all address this issue. Dec 6, 2021 · I have a dataset where the part numbers are categorized into subinventories. You can create a Jupyter Notebook by running the Create: New Jupyter Notebook command from the Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)) or by creating a new . 2: 117: Oct 27, 2018 · This does not work if using the "collapsing header" or "code folding" jupyter notebook extensions, which is the issue the OP raised. Theorems. In addition, for different environment the best practice is to use ipykernel. The replacement will be undone by calling the editor undo action. Jun 19, 2019 · I'm new to Python so I apologize in advance for this probably gross code. – May 22, 2020 · I am fairly new to using the Jupyter notebook and quite like it but, I find that many times I just need to “Find” something (like a function name for example) in my code. If you're in command mode, you can press the F key to bring up the dialog. I think I can go back to normal insert mode by un-num-locking, then using the 0/insert key. ripgrep May 16, 2019 · How do you repeat a previous command in Jupyter Notebook? In the Unix shell, you press up-arrow to recall previous command. 2 the CTRL+F twice press trick described in my comment above doesn't seem to work anymore. This change is inconvenient, as I previously relied on the ‘Find and Replace’ function to make replacements within individual cells. Select Find in Selection on the Replacement panel. Notebook. Nov 3, 2017 · Is there an efficient and safe solution for batch editing text for multiple jupyter notebooks? Approach. figure(figsize=figsize) for label,data in data_dict. So, for example the notebook. May 7, 2024 · Jupyter Notebook is a powerful tool for data analysis. Oct 28, 2021 · Yes, both the text editor and the notebook viewer in JupyterLab have Find-and-Replace all as an option. It is used extensively in data science as it provides a flexible environment to work with code and data. Sep 6, 2021 · i have to replace the s_months and incidents NaN values with the corresponding means in jupyter notebook. ipynb_checkpoints folders before applying the replacement actions. I want to replace some values, e. pyplot as plt data Nov 7, 2018 · You can give desired name just after a notebook it created or while it's open. replace({2: 200, 3: 300}, inplace=True) print(df) How to replace string in python DataFrame? Aug 6, 2015 · Maybe it is late to add a comment but just in case : the command Esc+F in one of the cells will bring a simple find and replace a window in Jupyter Notebook. Mar 30, 2020 · Thanks @michael-schroter for bringing this to my attention and @jaroslav-bezděk for the original post. Using jupyter %load_ext sql %config SqlMagic. And then edit few variable names, values to make it work in your program. Jupyter Notebook "Markdown" cells allow you to write HTML in them, and will render the HTML as expected in most cases. 5 Subscribe to our newsletter for more informative guides and tutorials. Apr 4, 2020 · This question is different from others because I need the output cell to be overwritten and updated many times throughout the process, instead, other questions just care about outputting the final Jun 24, 2018 · The search and replace preview shows only a single line. This command will download and install the latest version of scikit-learn. allowed_extensions: a list of extensions to allow templates for. 81. 0 and Notebook >= 7. In the pd. The test code below shows what I am trying to achieve. Look for the created file 'jupyter_notebook_config'and edit it. cm_config. imshow to jcv2. It uses the codemirror search and searchcursor add ons and allows search and replace operation through the whole notebook. The version 6. display import display import random mybutton = Nov 1, 2017 · gives me some fancy output, but after I paste it in mu Jupyter Notebook Code cell I get something like this: def my_fancy_code(): n = 'some name that has a special effect' n = 'some name that has a special effect' n = 'some name that has a special effect' n = 'some name that has a special effect' I am reading a CSV file into variable called 'data' as follows in Jupyter Notebook using pandas import pandas as pd import numpy as np import seaborn as sns import matplotlib. There are three levels of replacement. Nov 11, 2020 · I think your regex is correctly picking up , but not replacing. Result after replacement: After executing the Python command, or manually creating the file, restart your Jupyter notebook, and it should stop auto-closing quotes and brackets. I'm trying to complete a web scraping project and I currently have a dataframe with a price column (currently as strings). show() at the end of your function. Pandas 0. With the new “ctrl+f” I need to do “ctrl+f → search_term → tab → tab → tab → tab → tab → tab → tab → tab → tab → new_term → tab → tab → enter” due to the many options. cumsum(np. items(): plt. 2: 111: Sep 9, 2013 · Pandas: How to replace NaN (nan) values with the average (mean), median or other statistics of one column. The notebook combines live code, equations, narrative text, visualizations, interactive dashboards and other media. Requirements¶ JupyterLab >= 3. random. In a VSC ipynb, replacem Jun 21, 2023 · Replace --upgrade with -U for a shortcut. So, I have a multi-part question: Dec 28, 2015 · I'm using jupyter-lab and this works for me (adapt it to your case): from IPython. To ensure that scikit-learn has been successfully updated, you can check its version again in your Jupyter Notebook using: When editing a . The only “Find” I can see in the notebook is “Find and Replace” and, many times, I don’t want to replace anything just figure out which line a given piece of text is on. select Replace All. Mar 28, 2013 · CHANGE WORKING DIRECTORY OF JUPYTER NOTEBOOK BY CONFIGURATION FILE: Open cmd prompt (or Anaconda Prompt), then type 'jupyter notebook --generate-config' and press enter. Even if “Find and Replace” showed Mar 27, 2021 · I was a bit lost with this when I tried to make linebreak signs show up as linebreaks so that the text is more readable in the Jupyter Notebook output. ipynb file in your workspace. It will works in jupyter or python. I'm trying to replace gaming publisher name to "Other" if the count is below 5. If you are using Anaconda, you will have to wait for conda to update their copy of the notebook. First, we will walk through setup and a sample analysis to answer a real-life Aug 2, 2019 · In Jupyter notebook RegEx works like a charm, Jupyter Lab struggles RegEx Find works in both, but referencing string groups in Replace only works in Notebook. Alternatively, pressing F3 while editing a cell with a word highlighted, pops a find menu within that cell, searching for the highlighted word. See ipython issue #10123 for more information. Let’s explore the 10 best Jupyter alternatives and competitors today. I think this can be accomplished using the Find and Replace option which can be found under the edit menu of the notebook. scatter(df[x], df[y]) plt Hey, I'd love the ability to not only find and replace within a specific Jupyter notebook cell, but also to have my find/replace start where my cursor actually is in a cell instead of replacing the topmost one and then having to figure o Nov 20, 2020 · I have a DataFrame (DF1) with a matching pairs "code - description" (2 columns: one for "code", second for "description). On Linux for example you can use find and sed to replace: Jun 5, 2019 · In my jupyter notebook I want to replace the print functions with a wrapper function. This replots the graph in the same cell instead of adding a new one. Wanting to find and replace within a cell would not be that exceptional of a use case Feb 19, 2023 · When a jupyter notebook starts, Find and replace using the ‘F’ key (command mode) Changing a variable name that is written in different places is a tedious task, Jan 8, 2016 · We are excited to announce the release of the latest minor revision of the Jupyter Notebook, version 4. imshow in the remote jupyter notebook or colab. title(title) plt Mar 31, 2017 · Clarification - JupyterLab does have find and replace, both the one-by-one and replace all variant. I can match the print statement with a javascript regexp print\\(. No such arrow when editing a . I tried to replace \\n with \n with re. Jul 29, 2020 · you can change the kernel from Kernel option of top menu-bar of jupyter notebook. youtube. Sep 11, 2024 · The menu looked like this:Find & Replace - Original. check the configurationn of jupyter_notebook_config. Second image shows the missing button when in a notebook. 8. I’m curious if there’s any Jul 11, 2024 · The replace() method in pandas is used to replace a value with another value. It will open a popup text box. This is: df['nr_items'] If you want to replace the NaN values of your column df['nr_items'] with the mean of the column: Use method . g. even if notebook, the notebook may not be on a filesystem. The Jupyter Notebook is a web-based interactive computing platform. Create or open a Jupyter Notebook. displaycon=False Qu Feb 27, 2023 · Introduction The popularity of Jupyter Notebook has surged in recent years as a powerful tool for interactive data analysis and visualization. Verify the Update. Nonetheless, regex replace works across multiple lines. The issue here is discussing an additional variant that has a scope of the selected cells. This is different from some other Markdown editors where you can only use a very limited subset of HTML, or no HTML at all. com/p Sep 13, 2017 · Like @Kokul says, you can press the Insert Key. 2: 120: May 22, 2024 · Jupyter Notebook? Jupyter Notebook is an interactive environment for running and saving Python code in a step-by-step manner. Mar 6, 2020 · Jupyter Notebook Examples I have created a project on github where you can follow the examples and it can also serve as a starting point in your regex learning journey. To be clear, I want to select the cells in "command mode" -- I'm not talking about highlighting all the text. co Dec 18, 2019 · The trick based on here is to use an escape character to designate quotes to respect as symbols. If you want a user story, say my grandmother is using notebook 6, I should be able to update her to notebook 7 and she should not notice it. Ask Question Asked 2 years, 5 months ago. indentWithTabs with value true in nbconfig/notebook. This shortcut can be a time-saver when you need to navigate your notebook's history efficiently. md (the reference file) Theorem 1 = theorem blah blah. I'd prefer @anton-pomieshchenko's answer. Just add %%time at the top of the cell and you will get the output. import numpy as np import pandas as pd import matplotlib. It slows down development so I would like to ask if anybody knows how to activate it? First image shows the search/replace when in a python file. A dialog will ask confirmation and all files will be backed up in . The problem is that a new figure is added below the previous one, instead of the current figure cleared. On my laptop, Cmd+A just highlights all the text. Example: Data Analysis in a Jupyter Notebook. There have been some significant updates to column renaming in version 0. Apr 12, 2016 · How to selectively replace some words in a single cell e. 3) kernel having pandas version 1. replace(old, new Apr 5, 2023 · I agree with Yuvi's comment, the classic notebook shortcut is F not Ctrl-F, plus notebook 7 is meant to help sunset notebook 6, so for notebook 6 users we are trying to make notebook 7 as seamless as possible. plot(data, label=label) plt. In Jupyter Lab it is replaced with exact replace string, not referenced string groups. Dec 27, 2019 · There's an option in Jupyter Notebooks where you can select some cells, and then hit F, which opens up a Find & Replace feature. in your conda environment install ipykernel by following command: conda install ipykernel name the kernel using: May 7, 2024 · Note: This article was written as a Jupyter Notebook and published in read-only form, showcasing the versatility of notebooks. But I cannot find a way to do it for all the cells in the entire notebook. I found the internal search functionality of jupyter lab pretty annoying, since it only searches in the current cell. In this blog post, we will explore how you can replace Jupyter Notebook with Emacs Org Mode for a Jul 31, 2019 · Consider this Jupyter Python code, which uses Plotly: import plotly. Which is incredibly limited because it only allows replacement throughout the whole document. Update. 21. More importantly, the Jupyter Notebook is built on html/javascript technology, so it is particularly powerful for showing results of code. ipynb file. Once they do, you can run the following: conda upgrade notebook The big split Aug 13, 2017 · A set of themes for Jupyter How can I edit the configuration and change the transparency or the color of the selected area (blue) or invert the selection to the bracket, or completely remove it? In css syntax I do not understand at all. Match Whole Word should be supported. Type and select "Undo" or "Redo" to go back and forth through your actions. Second DataFrame (DF2) contain a list of "codes" in a column. I have a . This is no longer available on my new VM. 0: 815: May 22, 2020 Get esc+f search and replace working in newer versions of Jupyter? Notebook. But, my answer will help someone who has similar problem like that. Also, Jupyter is a mature product, and we're shipping feature really fast - frankly, at the pace we're shipping features, the code we write won't be accepted into the Jupyter codebase 😅. It has been replaced with a find and replace function that looks like this: Find & Replace - New. How to load them using python script instead of % signs. Dec 23, 2023 · The updated ‘Find’ feature now searches across the entire document instead of allowing searches within a specific cell. imshow. Jupyter notebooks have two different keyboard input modes: In edit mode you can enter code or text in a cell. This is indicated by a green cell border. As usual, you can update using pip: pip install notebook --upgrade. – May 4, 2018 · I hope you have already solved this. Why This Matters for the $ Literal Apr 7, 2022 · I have been using some jupyter notebook magics such as %matplotlib inline. 0. Right Click on the tab where Untitled(in my case it is Untitled1) is written, in top left corner and select Rename Notebook. 1. No more sharing and managing multiple versions of Jupyter Notebooks! Choose an interactive tool that facilitates collaboration. On the other hand, emacs and org are designed for text. – roudan Commented Apr 2, 2021 at 23:03 Apr 20, 2018 · This would be useful because I often want to use the builtin "Find and Replace" tool on every cell in the notebook, and this tool only works on selected cells. It can handle single values, lists, or dictionaries, making it very flexible for various use cases: # Replace multiple values at once df. Your sample string can be replaced as suggested: print\("[\s\S]*?", e\) While the dialog shows 0 matches the replacement works anyway: Note: I've modified your search pattern. Can someone please point me in the right direction? Apr 18, 2013 · Jupter Notebook Markdown. Input data : Types c_years o_periods s_months incidents 0 1 Mar 29, 2022 · When using VScode and its Jupyter notebook extension, is there a way to replace matched characters within a single cell? say I want to replace all "temp_" with "" within a single cell; when I use ctrl+F to search and replace, it always search through the entire notebook. For that reason I integrated a slider from ipywidgets to update the view angle. there are 7 variables named 'foo', and replace 3 of them by 'moo'. Replaced results are Jupyter Notebook: 1st is: var1 ; 2nd is: var2 <-- OK! Jupyter Lab: Notebook integration. When i search specific You may use the same on Jupyter Spark cluster/ Virtual environment using the same. Most of our programming tutorials and Python courses were created using Jupyter Notebooks. I want to replace those "codes" in the second DataFrame (DF2) with the "descriptions" from DF1 where DF1"code" will match DF2"code". 664167449844 Iteration 2 Score: 0. 5, which allows selective replacement. This extension provides a notebook-wide search & replace toolbar. Oct 26, 2023 · Find without Replace in Jupyter Notebook. 5. Mar 17, 2022 · Ctrl + F / Ctrl + H toggle the find/replace palette for the entire notebook, and the enter (or ctrl+alt+enter) key to replace does not work in this case. All files matching allowed_extensions in any subdirectories of these paths will be listed as templates Nov 6, 2023 · Type: Bug The standard behavior of find and replace (ctrl+F dialog) is to begin repalcement at the current cursor position, and within the active cell in the case of ipynb. Jul 11, 2022 · jupyter notebook find and replace specific word. Find and Replace. imshow for jupyter. The ipython notebook gives only option of replace all. jupyter\' folder. (optional, default ["*. Oct 4, 2021 · The 'find in selection' button is missing from VSCode when working with Jupyter Notebooks. replace(to_replace=None, value=None, inplace=False, limit=None, regex=False, method='pad') I think your code should be replaced by the following :. 👍 6 MingChen0919, knyats, wickdChromosome, nimral, jinisaweaklearner, and rudip7 reacted with thumbs up emoji 🎉 1 pcko1 reacted with hooray emoji Aug 17, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Jul 11, 2022 · In JupyterLab you can open a terminal. py in one of the location given by jupyter --paths Aug 31, 2018 · It is not possible to consistently get the path of a Jupyter notebook. – Luismi98 Commented Feb 14, 2022 at 17:31 May 5, 2020 · In Jupyter Notebooks on Windows, you can easily navigate both undo and redo actions: Open the Command Palette using (Ctrl + Shift + P). - modaresimr/opencv_jupyter_ui As you know it is not possible to use cv2. By combining these Python techniques with Jupyter Notebook, you'll be able to create dynamic, shareable analyses that can really bring your data to life. Mar 27, 2023 · started learning Python for data science a few weeks ago, and ran into this problem for my own project. *\\) but from there I am not sure how to use the match again in the replacement text field: def verb_printer(msg, verb): if verb: print(msg) In the next lesson, we'll explore how to apply these skills in Jupyter Notebook, a powerful tool for interactive data analysis. DataFrame(data,columns=columns) def g(x,y): plt. It supports multiple languages such as Julia, Python, and R. json should look like this: Jul 10, 2022 · Use the mouse to select the area you want to replace. 0: 814: May 22, 2020 Get esc+f search and replace working in newer versions of Jupyter? Notebook. Jul 26, 2024 · With the old “esc+f” search and replace I could do “esc+f → search_term → tab → new_term → enter” to search and replace in a few keystrokes. Replace a single match: The file will be opened in the text editor and the replacement will be done as a text edition. You need to toggle the little drop-down indicator that is to the left of where you enter the search text in order to bring up the ‘Replace’ options. pyplot as plt from ipywidgets import interactive %matplotlib inline columns=['a','b','c'] data = np. json (in the jupyter configuration directory). I'm always trying to modify a single cell. More specifically, we’ll use the below Python libraries: pandas: a popular data analysis and manipulation tool, which will be used for most of our data cleaning techniques; seaborn: statistical data visualization library; missingno: missing data-focused Jun 5, 2015 · To write this code in Jupyter notebook write this: import argparse args = argparse. Notes on replace. Let's use a backslash as the escape character. ipynb"]); template_dirs: a list of absolute directory paths. Depending on the OS you use, you can use the tools from that OS to do the job. Alternatively, a ‘Find an Replace’ feature is available in the Jupyter notebook itself. Jun 3, 2016 · Very confusing for me too (Jupyter lab in Firefox on Linux). As of Jupyter Lab v1. Modified 2 years, 5 months ago. Unfortunately, I have used it on my entire notebook by accident multiple times (by forgetting to click the "replace in selected cells" button). Feb 1, 2017 · I use the Find and Replace function quite a bit, but I don't think I've every intentionally used it on the whole notebook. This shortcut doesn't work in Jupyter Lab. Surely there must be an easy way to find/replace when editing a Jupyter notebook. This is a gap relative to the classic notebook that we should close. I've tried this on a test notebook and it seems to work, but I am not sure if this method will somehow corrupt the files. rand(10,3),axis=1) df = pd. tiuzkh njhqib vdliyaw yck ayfbsr uupaz oknm xzesc umpxxio hgurf