what is python backend

Make sure that Python is installed and added to the system PATH, run python--version or python3--version verification through the terminal; 2. Save the Python file as a .py extension, such as hello.py; 3. Create a custom build system in SublimeText, Windows users use {"cmd":["python","-u","$file"]}, macOS/Linux users use {"cmd":["python3

To debug Python scripts, you need to first install the Python extension and configure the interpreter, then create a launch.json file to set the debugging configuration, then set a breakpoint in the code and press F5 to start the debugging. The script will be paused at the breakpoint, allowing checking variables and step-by-step execution. Finally, by checking the problem by viewing the console output, adding logs or adjusting parameters, etc., to ensure that the debugging process is simple and efficient after the environment is correct.

ClassmethodsinPythonareboundtotheclassandnottoinstances,allowingthemtobecalledwithoutcreatinganobject.1.Theyaredefinedusingthe@classmethoddecoratorandtakeclsasthefirstparameter,referringtotheclassitself.2.Theycanaccessclassvariablesandarecommonlyused

asyncio.Queue is a queue tool for secure communication between asynchronous tasks. 1. The producer adds data through awaitqueue.put(item), and the consumer uses awaitqueue.get() to obtain data; 2. For each item you process, you need to call queue.task_done() to wait for queue.join() to complete all tasks; 3. Use None as the end signal to notify the consumer to stop; 4. When multiple consumers, multiple end signals need to be sent or all tasks have been processed before canceling the task; 5. The queue supports setting maxsize limit capacity, put and get operations automatically suspend and do not block the event loop, and the program finally passes Canc

The yield keyword is used to define a generator function, so that it can pause execution and return values one by one, and then recover from the pause; the generator function returns a generator object, has lazy evaluation characteristics, and can save memory. It is suitable for handling scenarios such as large files, streaming data, and infinite sequences. The generator is an iterator that supports next() and for loops, but cannot be rewind and must be recreated to iterate again.

InstallSublimeTextandPython,thenconfigureabuildsystembycreatingaPython3.sublime-buildfilewiththeappropriatecmdandselectorsettingstoenablerunningPythonscriptsviaCtrl B.2.OrganizeyourprojectbycreatingadedicatedfolderwithPythonfilesandsupportingdocument

ToseePythonoutputinaseparatepanelinSublimeText,usethebuilt-inbuildsystembysavingyourfilewitha.pyextensionandpressingCtrl B(orCmd B).2.EnsurethecorrectbuildsystemisselectedbygoingtoTools→BuildSystem→Pythonandconfirming"Python"ischecked.3.Ifn

ToavoidgettingblockedwhilewebscrapingwithPython,userealisticrequestheaders,addrandomizeddelays,rotateIPaddresseswithproxies,maintainsessions,respectrobots.txt,anduseheadlessbrowserswhennecessary,ensuringethicalandstealthybehaviortomimicrealusersandpr