learnPython | Python & # 39 ; s basic practice code and various crawler codes | Crawler library
kandi X-RAY | learnPython Summary
kandi X-RAY | learnPython Summary
Python's basic practice code and various crawler codes
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Top functions reviewed by kandi - BETA
- Crawl post list
- Get html from url
- Insert a given string into the block
- Calculate the hash of a given value
- Get list from url
- Get all available products
- Get next page
- Checks if the given string contains the given string
- Parse a news URL
- Start a new connection
- Get list by url
- Search for products
- Method to parse 3 3 API
- Downloads the image
- Get url from mclist interface
- Parses url and parses content
- Extract text from a link
- Download data from MPL
- Method to get the content of the method
- Parses the url and parses it
- Returns the text of products
- Method to get the content of the url
- Sort lists
- Downloads a picture from a given url
- Binary search
- Get start url
- Parse a link
- Get floor from html content
- Decorator to wrap a function
- Get url list
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learnPython Examples and Code Snippets
Community Discussions
Trending Discussions on learnPython
QUESTION
What is the correct format for supplying a name to a python package in a pyproject.toml?
pyproject.toml file
...ANSWER
Answered 2022-Mar-17 at 21:44It seems that you are trying to write a PEP 621-style pyproject.toml with the setuptools build back-end.
But, as of now, setuptools does not have support for PEP 621 yet. The work is ongoing:
- https://discuss.python.org/t/help-testing-experimental-features-in-setuptools/13821
- https://github.com/pypa/setuptools/tree/experimental/support-pyproject
- https://github.com/pypa/setuptools/search?q=621&type=issues
Until PEP 621 support arrives in setuptools, one can:
QUESTION
I have two arrays A and B that have size (10000,100,100) (very large). I need to perform a series of operations to pass them to other functions. My question is: how can I save the most amount of memory? Let me give a specific example.
ANSWER
Answered 2022-Feb-07 at 18:07In the first version, the arrays created by np.power() and np.abs() will stay in memory until the script ends, because the variables prevent them from becoming garbage.
In the second version, the arrays will be garbage collected when the function returns, because they were only assigned to the function parameters, which go away when the function exits. So this version will use less memory.
You can make the first version like the second if you reassign or delete the variables after using them in the function calls.
QUESTION
I m new to programming and came across a question If I have a string where I have 2 variables indexed.. and need the value from the middle.
for example, my string is HeyEveryoneImtryingtolearnpythonandihavequestion
where I have variables
ANSWER
Answered 2021-Dec-29 at 01:05You can use index and slicing:
QUESTION
------------------- Summation ------------
I want to animate 3+ graphs using FuncAnimation by using the same animation object to speed up the code.
What is the best way of achieve this? What am I doing wrong as my use of return a + b + c do not work as this is an unreported operand type for +?
------------------- Summation ------------
I am working on a project were I need to print data in real time, as the data is spred over different measurements do I need to separate them into different graphs both for ease of use and as they have widely shifting amplitudes.
There are a lot of examples out there how one animates one graph however not on how to animate several. The ones that I have found how to use FuncAnimation to update and animate multiple figures with matplotlib? https://www.reddit.com/r/learnpython/comments/4a0e8v/live_graphing_multiple_subplots_with_matplotlib/
And the one that I have had the most successes with is to create several subplots in one figure and animate that figure. I have sett up the following testprogram based on the first example I mentioned above.
...ANSWER
Answered 2021-May-05 at 12:27Was able to sole it my self, my problem were that I attempt to return a line object for FuncAnimation to use instead of plotting the graphs inside of the updating function.
I will leave my code if somebody in the future got the same problem.
QUESTION
I posted What is wrong with my code? a month ago. No answers. Now I decide to study this issue again. I simplified the reproducibe code here:
...ANSWER
Answered 2021-Apr-18 at 03:25You haven't explained how you expect that the assignment will produce the result you claim.
I suspect that you expect node.next to resolve differently from the formal definition.
If you resolve the node references to their single-letter equivalents, the sequence of assignments looks something like this:
QUESTION
I can pass a variable (such as the document name) from Photoshop to a Python script (albeit via a batch file)
Photoshop script hello_world.jsx
...ANSWER
Answered 2020-Nov-16 at 14:28Write the result of the hello_world_photoshop.py into a file and read it in the photoshop script.
I don't really know if the File(batPath).execute(); waits for the end of the execution or not. If it does, then you can read the resulting file after this line. If it does not wait, then you could put the execution of javascript to an infinite loop of pauses and checks for a result file updates.
QUESTION
When running an executable file, my program crashes when processing a large file. The crash doesn't happen with small files, which get processed without problems. The weird thing is that the program works just fine outside of pyinstaller. I have tried building with console from a command prompt and debug outputs, but still nothing is printed.
Important to note here, is that the executable works well on other PC's (with the same files). It's not entirely clear what the difference is between these PC's. It could be memory, but during the crash there's not a lot of memory in use by the program. It could be dependencies under the hood, but I thought pyinstaller would take care of these.
The line that the program crashes on is a read_csv call.
...ANSWER
Answered 2020-Oct-29 at 15:59The issue was with memory. This line was fixed by reading the file in chunks.
QUESTION
I want to ask a question about panda's in python - specifically about it's DataFrame() function.
I have the following data that I want to covert to a data frame:
...ANSWER
Answered 2020-Oct-23 at 21:42One simple solution can be :
QUESTION
source code : https://github.com/techwithtim/NEAT-Flappy-Bird line 28 - 31 (tech with tims flappy bird deep learning ai)
...ANSWER
Answered 2020-Oct-12 at 04:17The error has nothing to do with your version of python and it's not an issue with the repo. From what I can tell, you are trying to run the app from C:\Users\osty2\Documents\programing_projects, which has no imgs folder.
Navigate to C:\Users\osty2\Documents\programing_projects\NEAT-flappy-bird and then run it. The application will then be able to see the imgs folder.
QUESTION
Basically I'm trying to make a searchbox in tkinter where you try stuff into the entry box and in a listbox below that it shows everything in a certain list that contains what you typed. I got the initial code from here.
However since I don't really understand classes I decided to shorten it to this:
...ANSWER
Answered 2020-Sep-14 at 09:20Your problem is that search_var was expiring when the main function completed so, whatever updates you were telling it to do also expired. The reason why @acw1668 solution worked is because the lambda is keeping the reference alive. This could have also been accomplished with the global keyword, although I like acw1668's approach a bit more as it gives a modicum of encapsulation. However, abusing lambda just to keep arbitrary references alive is not a good design choice. Also, if you were doing this in a loop with multiple recurring references, as that lambda currently stands, only the very last reference would be kept alive.
Here is what the global approach would have looked like
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