4/18/2023 0 Comments Black formatter![]() ![]() We can specify the line length using the -line-length or -l argument, and if we set the line length to 100, black -l 100 format_05_raw.py, the above example will not be reformatted. My solution is to allow a slightly longer line length. Black’s default line length is 88, but sometimes I do have slightly longer statements and I don’t want them to be formatted that way. It enforced consistency but sacrificed readability. The only thing I don’t like about the black code style so far is regarding long if-statements, as the below example shows: It makes it easier to add or delete items, and makes the code easier to maintain. Instead of SELECT column_a, column_b, column_c FROM some_tableįor the same reasons. So if you don’t want black to wrap your code into one line, add a comma at the end!īonus tips: when I write SQL queries, I would write SELECT column_a ,column_b ,column_c FROM some_table I think this makes sense, and in general trailing commas are good practice as they make the code easier to maintain, as well as generate clean git diff when you make changes. In short, there will always be a trailing comma wherever an array-like item’s contents are in new lines. If there is a trailing comma in the item, black makes sure its contents are separated into new lines. If an array-like item ends without a trailing comma, whether it is a list, matrix or dictionary, black always tries to warp it into one line if it exceeds the length of the line, black then puts its contents in new lines and adds a trailing comma for you. Yes, black uses trailing commas to decide whether the items will be wrapped together or stay in new lines. Although is generally not good practice, but let’s just say we really want to do something first before importing the rest of the modules. As a formatting tool it should not try to change the order of the code, and indeed, it can sometimes cause problems. Some may see this as a good thing, however, in my opinion a good tool should focus on one thing and that thing only. However, I’ve come across some problems with autopep8 that are enough to keep me from using it. Problems with autopep8ĭon’t get me wrong, autopep8 is a great tool and I like it, and the best thing about autopep8 is that it allows plenty of user configurations, whereas black barely allows any. I have used both tools in my work and I’d like to share with you why I prefer black over autopep8. One of the major differences is that black is an opinionated formatter, meaning that it always converts the entire codebase into its own style, whereas autopep8 preserves the input style to some extent and only fixes the necessary parts. Black has 30.4k stars on GitHub and is probably the most popular tool of its kind, while autopep8 has 4.2k stars. If you’re interested in trying out Coiled, which provides hosted Dask clusters, docker-less managed software, and one-click deployments, you can do so for free today when you click below.Autopep8 and Black are both great tools to auto-format your Python code to conform to the PEP 8 style guide. JupyterLab has an extension that makes it easy to automatically format the Python code in your notebooks.Īutomatic code formatters make it easy for teams to consistently style their code without extra work. ![]() ![]() Jupyterlab_code_formatter also supports YAPF and Autopep8 code formatting. We recommend using Black because it’s popular and used in several popular open-source libraries. It’s better to follow a community-accepted, fully automated solution. Spending time creating style guides, commenting about formatting in pull requests, and arguing about double or single quotes is not a good use of developer time. Some programmers are more passionate about their whitespace preferences than you might think! This was tedious and sometimes contentious. Before automatic code formatting was popular, teams would create style guides and manually enforce coding rules. ![]()
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