black | The uncompromising Python code formatter | Form library

 by   psf Python Version: 24.4.0 License: MIT

kandi X-RAY | black Summary

kandi X-RAY | black Summary

black is a Python library typically used in User Interface, Form applications. black has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. However black build file is not available. You can install using 'pip install black' or download it from GitHub, PyPI.

The uncompromising Python code formatter

            kandi-support Support

              black has a medium active ecosystem.
              It has 32603 star(s) with 2101 fork(s). There are 229 watchers for this library.
              There were 6 major release(s) in the last 6 months.
              There are 377 open issues and 1915 have been closed. On average issues are closed in 516 days. There are 30 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of black is 24.4.0

            kandi-Quality Quality

              black has 0 bugs and 0 code smells.

            kandi-Security Security

              black has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              black code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              black is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              black releases are available to install and integrate.
              Deployable package is available in PyPI.
              black has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed black and discovered the below as its top functions. This is intended to give you an instant insight into black implemented functionality, and help decide if they suit your requirements.
            • Generates good token info .
            • Return whitespace of a leaf node .
            • Parse the grammar .
            • Merge a string group .
            • Transform a line .
            • Returns the maximum length of a string .
            • Determines if a split before a delimiter .
            • Return the set of features used in the given node .
            • Normalize invisible parens .
            • Split a line on the right hand .
            Get all kandi verified functions for this library.

            black Key Features

            No Key Features are available at this moment for black.

            black Examples and Code Snippets

            The Black code style-Code style-How Black wraps lines
            Pythondot img1Lines of Code : 65dot img1License : Permissive (MIT)
            copy iconCopy
            # in:
            j = [1,
            # out:
            j = [1, 2, 3]
            # in:
            ImportantClass.important_method(exc, limit, lookup_lines, capture_locals, extra_argument)
            # out:
                exc, limit, lookup_lines, capture_locals, extra_arg  
            Release process-Cutting a release-Changelog template
            Pythondot img2Lines of Code : 46dot img2License : Permissive (MIT)
            copy iconCopy
            ## Unreleased
            ### Highlights
            ### Stable style
            ### Preview style
            ### Configuration
            ### Packaging
            ### Parser
            ### Performance
            ### Output
            ### _Blackd_
            ### Integrations
            ### Documentation
            The uncompromising code formatter-Contents
            Pythondot img3Lines of Code : 34dot img3License : Permissive (MIT)
            copy iconCopy
            maxdepth: 3
            maxdepth: 3
            caption: User Guide
            maxdepth: 2
            caption: Develop  
            Black depth of the tree .
            pythondot img4Lines of Code : 19dot img4License : Permissive (MIT License)
            copy iconCopy
            def black_height(self) -> int | None:
                    """Returns the number of black nodes from this node to the
                    leaves of the tree, or None if there isn't one such value (the
                    tree is color incorrectly).
                    if self is None  
            Calculates the largest black rectangle for the given heights .
            javadot img5Lines of Code : 18dot img5License : Permissive (MIT License)
            copy iconCopy
            public static  String largestRectanglehistogram(int[] heights) {
            		int n = heights.length, maxArea = 0;
            		Stack st = new Stack<>();
            		for(int i=0;i heights[i]) {
            				int[] tmp = st.pop();
            				maxArea = Math.max(maxArea, tmp[1]*(i - tmp[0]));
            Return black and white color .
            pythondot img6Lines of Code : 16dot img6License : Permissive (MIT License)
            copy iconCopy
            def get_black_and_white_rgb(distance: float) -> tuple:
                Black&white color-coding that ignores the relative distance. The Mandelbrot
                set is black, everything else is white.
                >>> get_black_and_white_rgb(0)
                (255, 2  
            `QPixmap` and `QLabel` size slightly increases when reloading
            Pythondot img7Lines of Code : 3dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            width = self.label.contentsRect().width()
            pixmap = pixmap.scaledToWidth(width, Qt.SmoothTransformation)
            How to create minmap in like other modern code editor in python tkinter?
            Pythondot img8Lines of Code : 39dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import tkinter as tk
            from tkinter.font import Font
            class TextPeer(tk.Text):
                """A peer of an existing text widget"""
                count = 0
                def __init__(self, master, cnf={}, **kw):
                    TextPeer.count += 1
                    parent = master.master
            need help to change colour in cv2, with user input in tinker
            Pythondot img9Lines of Code : 9dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            color_dict = {'red': (50, 50, 255),
                           'blue' : (255, 127, 0),
                           'dark blue': (127, 20, 0)}  # etc...
            selected_colour_name = line_clicked.get()
            line_colour = colour
            Slicing a 3D image to create a 2D image
            Pythondot img10Lines of Code : 21dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            num_layers = n.shape[0]
            # num_across = how many images will go in 1 row or column in the final array.
            num_across = int(np.ceil(np.sqrt(num_layers)))
            # new_shape = how many numbers go in a row in the final array.
            new_shape = num_across * 

            Community Discussions


            Jetpack compose BottomNavigation - java.lang.IllegalStateException: Already attached to lifecycleOwner
            Asked 2022-Apr-04 at 05:49

            When I double click the same item or if I go to each composable screen very quickly i receive an error, How do I solve this problem? I tried changing few things but I just can't solve it and I can't find any resources to fix this problem.

            Bottom Navigation implementation



            Answered 2022-Mar-06 at 09:39

            I'm facing the same problem using the latest compose navigation dependency 2.5.0-alpha03.

            I don't know why it's happening.

            Philip Dukhov is right, you should report this issue.

            Here is a dirty workaround :



            ImportError: cannot import name '_unicodefun' from 'click'
            Asked 2022-Mar-30 at 08:58

            if running our lint checks with the python black pkg. an error comes up

            ImportError: cannot import name '_unicodefun' from 'click' (/Users/robot/.cache/pre-commit/repo3u71ccm2/py_env-python3.9/lib/python3.9/site-packages/click/

            related issues:




            Answered 2022-Mar-30 at 08:58

            This has been fixed by Black 22.3.0. Versions before that won't work with click 8.1.0.


            E.g.: black.yml



            Find near duplicate and faked images
            Asked 2022-Mar-24 at 01:32

            I am using Perceptual hashing technique to find near-duplicate and exact-duplicate images. The code is working perfectly for finding exact-duplicate images. However, finding near-duplicate and slightly modified images seems to be difficult. As the difference score between their hashing is generally similar to the hashing difference of completely different random images.

            To tackle this, I tried to reduce the pixelation of the near-duplicate images to 50x50 pixel and make them black/white, but I still don't have what I need (small difference score).

            This is a sample of a near duplicate image pair:

            Image 1 (a1.jpg):

            Image 2 (b1.jpg):

            The difference between the hashing score of these images is : 24

            When pixeld (50x50 pixels), they look like this:



            The hashing difference score of the pixeled images is even bigger! : 26

            Below two more examples of near duplicate image pairs as requested by @ann zen:

            Pair 1

            Pair 2

            The code I use to reduce the image size is this :



            Answered 2022-Mar-22 at 12:48

            Rather than using pixelisation to process the images before finding the difference/similarity between them, simply give them some blur using the cv2.GaussianBlur() method, and then use the cv2.matchTemplate() method to find the similarity between them:



            Tab & Navigation Bar changes after upgrading to XCode 13 (& iOS 15)
            Asked 2022-Mar-22 at 05:47

            I have an iOS app, since upgrading to Xcode 13, I have noticed some peculiar changes to Tab and Navigation bars. In Xcode 13, there's now this black area on the tab and nav bars and on launching the app, the tab bar is now black as well as the navigation bar. Weird enough, if the view has a scroll or tableview, if I scroll up, the bottom tab bar regains its white color and if I scroll down, the navigation bar regains its white color.

            N:B: I already forced light theme from iOS 13 and above:



            Answered 2021-Sep-22 at 12:40

            first of all the problem is cause by unchecking translucent I fixed it by choosing navigation bar appearance from attributes inspector scroll edge it will fix it see this screen shot please



            Horizontal full width with overflow in vertical flexbox
            Asked 2022-Mar-20 at 07:17

            I'm trying to create a flexbox that is both horizontally as vertically scrollable in case its needed. It's kind of a table layout in flexbox. In the picture below you can see the concept that I'm trying to achieve. This works correctly when the viewport is not too small or too short.

            We can then resize the viewport. This works correctly for the vertical overflow. A scrollbar appears and we can scroll downwards. This sadly doesn't work correctly horizontally. We also get a scrollbar for the horizontal part. But the yellow rows (with test) are not the full width I need it to be.



            Answered 2022-Mar-19 at 02:36

            Every red and blue cells have a minimal width (with flex-basis and flex-shrink: 0) but not the yellow.

            The yellow are using the largest width possible for them, but the others are going out their container.

            In this situation, the simplest way to "fix" it is to set a minimal width to the yellow bars too.

            A small example (with variables to simplify maintainability)




            How to automate legends for a new geom in ggplot2?
            Asked 2022-Jan-30 at 18:08

            I've built this new ggplot2 geom layer I'm calling geom_triangles (see that plots isosceles triangles given aesthetics including x, y, z where z is the height of the triangle and the base of the isosceles triangle has midpoint (x,y) on the graph.

            What I want is for the geom_triangles() layer to automatically provide legend components for the height and width of the triangles, but I am not sure how to do that.

            I understand based on this reference that I may need to adjust the draw_key argument in the ggproto StatTriangles object, but I'm not sure how I would do that and can't seem to find examples online of how to do it. I've been looking at the source code in ggplot2 for the draw_key functions, but I'm not sure how I would introduce multiple legend components (one for each of height and width) in a single draw_key argument in the StatTriangles ggproto.



            Answered 2022-Jan-30 at 18:08

            I think you might be slightly overcomplicating things. Ideally, you'd just want a single key drawing method for the whole layer. However, because you're using a Stat to do the majority of calculations, this becomes hairy to implement. In my answer, I'm avoiding this.

            Let's say I'd want to use a geom-only implementation of such a layer. I can make the following (simplified) class/constructor pair. Below, I haven't bothered width_scale or height_scale parameters, just for simplicity.




            Convert GPS Coordinates to Match Custom 2d outdoor layout Image
            Asked 2022-Jan-17 at 04:19

            I don't know if this is possible, but I am trying to take the image of a custom outdoor football field layout and have the players' GPS coordinates correspond to the image xand y position. This way, it can be viewed via the app to show the players' current location on the field as a sort of live tracking.

            I have also looked into this Convert GPS coordinates to coordinate plane. The problem is that I don't know if this would work and wanted to confirm beforehand. The image provided in the post was for indoor location, and it was from 11 years ago.

            I used Location and Google Maps packages for flutter. The player's latitude and longitude correspond to the actual latitude and longitude that the simulator in the android studio shows when tested.

            The layout in question and a close comparison to the result I am looking for.

            Any help on this matter would be appreciated highly, and thanks in advance for all the help.


            After looking more at the matter I tried the answer of this post GPS Conversion - pixel coords to GPS coords, but it wasn't working as intended. I took some points on the image and the correspond coordinates, and followed the same logic that the answer used, but reversed it to give me the actual image X, Ypositions.

            The formula that was given in the post above:



            Answered 2022-Jan-12 at 08:20

            First of All, Yes you can do this with high accuracy if the GPS coordinates are accurate.

            Second, the main problem is rotation if the field are straight with lat lng lines this would be easy and straightforward (no bun intended).

            The easy way is to convert coordinate to rotated image similar to the real field then rotated every X,Y point to the new straight image. (see the image below)

            Here is how to rotate x,y knowing the angel:



            Is it possible to combine a ggplot legend and table
            Asked 2022-Jan-07 at 03:57

            I was wondering if anyone knows a way to combine a table and ggplot legend so that the legend appears as a column in the table as shown in the image. Sorry if this has been asked before but I haven't been able to find a way to do this.

            Edit: attached is code to produce the output below (minus the legend/table combination, which I am trying to produce, as I stitched that together in Powerpoint)



            Answered 2021-Dec-31 at 13:24

            This is an interesting problem. The short answer: Yes, it's possible. But I don't see a way around hard coding the position of table and legend, which is ugly.

            The suggestion below requires hard coding in three places. I am using {ggpubr} for the table, and {cowplot} for the stitching.

            Another problem arises from the legend key spacing for vertical legends. This is still a rather unresolved issue for other keys than polygons, to my knowledge. The associated GitHub issue is closed The legend spacing is not a problem any more. Ask teunbrand, and he knows the answer.

            Some other relevant comments in the code.



            Succinctly Reproducing the following graph with R and ggplot2
            Asked 2021-Dec-27 at 22:55

            I borrowed the R code from the link and produced the following graph:

            Using the same idea, I tried with my data as follows:



            Answered 2021-Dec-27 at 22:55

            You can do calculations within a function for the x and y values to construct the ggplot which extends the circle all the way round and gives labels correct heights.

            I've adapted a function to work with other datasets. This takes a dataset in a tidy format, with:

            • a 'year' column
            • one row per 'event'
            • a grouping variable (such as country)

            I've used Nobel laurate data from here as an example dataset to show the function in practice. Data setup:



            How to map function directly over list of lists?
            Asked 2021-Dec-26 at 15:38

            I have built a pixel classifier for images, and for each pixel in the image, I want to define to which pre-defined color cluster it belongs. It works, but at some 5 minutes per image, I think I am doing something unpythonic that can for sure be optimized.

            How can we map the function directly over the list of lists?



            Answered 2021-Jul-23 at 07:41

            Just quick speedups:

            1. You can omit math.sqrt()
            2. Create dictionary of colors instead of a list (that way you don't have to search for the index each iteration)
            3. use min() instead of sorted()


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install black

            Black can be installed by running pip install black. It requires Python 3.6.2+ to run. If you want to format Jupyter Notebooks, install with pip install black[jupyter].


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