autonomous | Powerwheels Racing Autonomous Vehicle Model | Robotics library

They talk about this a bit in the UTL_URL documentation, but colons are reserved characters - they're valid in some parts of a URL, but not in others. (Curly braces are not allowed at all.) There's been some debate about whether or not they're valid in the Query portion of a URL - the ABNF in the RFC seems to say yes, but a lot of implementations don't allow it.

By default, UTL_URL.ESCAPE doesn't escape reserved characters (because that would screw up the https:// part, etc), but you can change that by passing TRUE as the second argument. In general, best practice seems to be escaping reserved characters in any query string that might contain them:

Fixed! I was just doing it in the wrong way.

If you want to draw on an image that will be displayed in a QLabel then it is better to load the image with opencv, draw the circle, convert the numpy array to QImage, convert the QImage to QPixmap and set it in the QLabel:

To me, it looks as if

• you should "convert" procedures that calculate every part of the STUDENT_ID into functions
  • Why? Because - as it is now - procedures have to have an OUT parameter so that they could return what they calculated. And that's nothing but a function
• pass pieces of information to each of them
• get the result
• concatenate result pieces into the final STUDENT_ID values

Something like this:

Your code is somewhat inefficient in the sense that it repeatedly splits the all the lines up. In the code below, this is only done once when they are first read in from the file. In addition, after reading they're transposed into columns of row since most of the processing is done with respect to what in each column.

features is just one string in one line of the file, not all the strings in that column.

Add each word to the unique_list set in the loop, and print the set at the end.

The easiest option is to add a withAnimation block inside your timer closure:

You can use timeout= in your subprocess.run call. This would raise a TimeoutExpired Exception so you should also use try and except

The only correct approach is to instead use a parser, such as this one for Python. Which has many /examples ...

Offload the entire problem of "correctly handing the intricacies of the language itself" to this already existing and tested parser, instead of trying to use regular expressions to "create a sort-of parser, yourself." Which is a fool's errand.

Parsers work in various ways, but in essence they work by scanning the source-code to internally create an Abstract-Syntax Tree, or AST. Then, they allow you to explore that tree or to iterate over it through the use of so-called "visitors."

The tree itself is not "abstract." The term comes from the fact that its content is an abstraction of the source-code syntax, representing what the source-code says, not the actual text of it.

You can then create a "visitor" which will be invoked whenever the AST-node of interest is encountered during the "walk." This will be "the right place and time" to gather whatever information you need – but you don't have to be concerned about how you got there. That's the parser's job.

For example, you "visit" some node that corresponds to a typedef struct declaration. Child-nodes of this node will represent the abstracct essence of the structure that you are now looking at, no matter how it was written in the source-code text, which is long gone and by now completely irrelevant. The organization and content of those child nodes is known and can be relied upon. Parents of this node represent whatever "contains" this typedef. All of this heavy-lifting is done for you automagically by the parser.

Footnote: "This, of course, is how every language interpreter or compiler itself actually works on the front end." No doubt, this package was built using the official so-called "grammar" for the C99 language, which would also be used by every compiler for that language. The technology – including the method for constructing such parsers – is proven, fast, and efficient.