🌐 Mailman 3 June 2019 - Python-list - python.org

IP address to binary conversion
by Jeroen Wolff May 9, 2020

May 9, 2020

Hi, Can somebody help me (a newbee) to convert an ip address to is 32 bits representation? i would like to store these 32bits interger into a MYSQL database together with the mask. Jeroen

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Re: Escaping confusion with Python 3 + MySQL
by Νίκος Βέργος April 22, 2020

April 22, 2020

Τη Κυριακή, 26 Μαρτίου 2017 - 5:19:27 μ.μ. UTC+3, ο χρήστης Ian έγραψε: > You need to change the placeholders back. The poster who told you to > replace them was misinformed. okey altered them back to cur.execute('''UPDATE visitors SET (pagesID, host, ref, location, useros, browser, visits) VALUES (%s, %s, %s, %s, %s, %s, %s) WHERE host LIKE "%%s%" ''', (pID, domain, ref, location, useros, browser, lastvisit, domain) ) but now the problem is how to exact;y type the Where HOST like "%%%" I MEAN HOW TO DIFFERENTIATE '%S' FROM LITERAL '%' character.

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py2c - an open source Python to C/C++ is looking for developers
by maniandram01＠gmail.com April 11, 2020

April 11, 2020

I created py2c ( http://code.google.com/p/py2c )- an open source Python to C/C++ translator! py2c is looking for developers! To join create a posting in the py2c-discuss Google Group or email me! Thanks PS:I hope this is the appropiate group for this message.

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name 'aLOCK' is not defined When I add aLOCK = threading.RLock() behind if __name__ == "__main__"
by xuanwu348 Oct. 26, 2019

Oct. 26, 2019

Hi team Good day The problem I meet when I add "aLOCK = threading.RLock()" to PositionB, the program will report error "name 'aLOCK' is not defined ", but when I change this code to PositionA, it can run normally, is there any difference for the code between 'if __name__ == "__main__:"', can you help me, thanks! The file I was attached, please change the extend ".pyx" to ".py", thanks, code as below, tried python2.7 and python3.4: import threading import time from multiprocessing import Process #PositionA aLOCK = threading.RLock() def Save_runnedCMD(filename, strings): aLOCK.acquire() with open(filename, "at") as f: f.write(str(strings) + "\n\r") aLOCK.release() def runCMD(filename): time.sleep(1) cmd = "testtest" Save_runnedCMD(filename, cmd) def Thr_run(filename): t = [] for i in range(2): tt = threading.Thread(target = runCMD, args=(filename,)) tt.start() t.append(tt) for tt in t: tt.join() if __name__ == "__main__": filename = "./testaaaaa.log" #PositionB #aLOCK = threading.RLock() while 1: t1 = Process(target=Thr_run, args=(filename, )) t1.start() t1.join() Error info as below: D:\Appppp>python testa.py Exception in thread Thread-1: Traceback (most recent call last): File "C:\Python34\lib\threading.py", line 921, in _bootstrap_inner self.run() File "C:\Python34\lib\threading.py", line 869, in run self._target(*self._args, **self._kwargs) File "D:\Appppp\testa.py", line 15, in runCMD Save_runnedCMD(filename, cmd) File "D:\Appppp\testa.py", line 7, in Save_runnedCMD aLOCK.acquire() NameError: name 'aLOCK' is not defined Exception in thread Thread-2: Traceback (most recent call last): File "C:\Python34\lib\threading.py", line 921, in _bootstrap_inner self.run() File "C:\Python34\lib\threading.py", line 869, in run self._target(*self._args, **self._kwargs) File "D:\Appppp\testa.py", line 15, in runCMD Save_runnedCMD(filename, cmd) File "D:\Appppp\testa.py", line 7, in Save_runnedCMD aLOCK.acquire() NameError: name 'aLOCK' is not defined

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Your IDE's?
by John Doe Aug. 19, 2019

Aug. 19, 2019

What is your favorite Python IDE?

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how to setup for localhost:8000
by wrh8609＠gmail.com Aug. 10, 2019

Aug. 10, 2019

Hi, I am working on window 7 and Python 3.5 to setup a localhost:8000 but it did not get through as shown below: > python -m http.server Serving HTTP on 0.0.0.0 port 8000 ... But it did not show the results. Can someone help me how to setup the localhost? Thanks, Wen-Ruey

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Swiss Ephemeris
by Peter Henry July 27, 2019

July 27, 2019

Hi Group I have a package that has been altered to imported in to python, however I tired to get is working but without success I be missing something obvious The Swiss Ephemeris enable planetary coordinate to be imported and used in your program Files access https://pypi.python.org/pypi/pyswisseph Many thanks in advance Peter

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Do I need a parser?
by josé mariano July 8, 2019

July 8, 2019

Dear all, I'm sure that this subject has been addressed many times before on this forum, but my poor knowledge of English and of computer jargon and concepts results on not being able to find the answer i'm looking for when I search the forum. So here is my problem: I have this open source project for the scientific community were i want to duplicate an old MS-DOS application written in Fortran. I don't have the source code. The idea is to re-write the software in Python. Originally, the old application would would need to input files: one config file, written with a specific format (see below) and a second one, the so-called scrip file, that defines the sequence of operations to be performed by the main software, also written in a specific format. To make the transition to the new application as painless as possible to the users, because most of them have their collection of scrips (and settings) developed over the years and are not willing to learn a new script language, I would like to make the new app 100% compatible with the old input files. The operation of the new software would be like this: From the shell, run "my_new_software old_script_file.***". The new software would load the old_script, parse it (?), set the internal variables, load the script and run it. So, to get to my questions: - To load and read the config file I need a parser, right? Is their a parser library where we can define the syntax of the language to use? Are there better (meaning easier) ways to accomplish the same result? - For the interpretation of the script file, I don't have any clue how to this... One important thing, the script language admits some simple control flow statements like do-wile, again written using a specific sintax. Thanks a lot for the help and sorry for the long post. Mariano Example of a config (settings) file ======================== ..... CONDAD -11 BURAD2 4 SALT1 1.0 KNO3 ELEC5 -2.0 mV 400 58 0. 0 ..... Example of a script =================== !Conductivity titration cmnd bur1 f set vinit 100 set endpt 2000 set mvinc 20 set drftim 1 set rdcrit cond 0.5 per_min set dosinc bur1 0.02 1000 set titdir up titratc cond bur1

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Handle foreign character web input
by Tobiah July 4, 2019

July 4, 2019

A guy comes in and enters his last name as RÖnngren. So what did the browser really give me; is it encoded in some way, like latin-1? Does it depend on whether the name was cut and pasted from a Word doc. etc? Should I handle these internally as unicode? Right now my database tables are latin-1 and things seem to usually work, but not always. Also, what do people do when searching for a record. Is there some way to get 'Ronngren' to match the other possible foreign spellings?

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Python 3.7.3 - ImportError: dynamic module does not define module export function (PyInit_*)
by gia . June 30, 2019

June 30, 2019

Hi, I was trying to upgrade a python 2 extension in Linux and hit this error upon trying to import it into python 3. The weird thing is that I can see the symbol when I use readelf -a, so it is not missing, it has visibility default and it defines as extern "C" PyObject* return type (using the macro). I build with g++ 6, global visibility hidden and inline hidden, would that affect it? does it need to find other functions? readelf -d shows that a NEEDED library is my altinstall build of python 3.7.3's libs, so that makes me think g++ found the correct library (there is an oder system library installed). RUNPATH is configured with a relative path that leads upwards in the folder tree to the python libs. It points to the same lib folder as the interpreter's RUNPATH, which is also relative. The module name starts with a underscore, so that's a point of worry, the standard mentioned ascii, so I assumed underscore is fine, but maybe it meant alphanumeric. The module is _mymodule_python3, and the init is PyInit__mymodule_python3, with the *.so being _mymodule_python3.so and a python file mymodule.py that loads the module inside using 'import my.package._mymodule_python3'. The cpp file is encoded in utf8, but the module name string that goes in the module def is not L"", it is plain char. I load python3 manually and then import this py file and it finds the so file, but at the end prints the error, I can exit, load another python3 and import the so directly and same outputs. sys.path doesnt point to the system install. I read the standard page and it seems everything is set up correctly (although it obviously isn't or it should be working). I've had a lot of difficulty debugging the import call because it is frozen so I can't just edit the _bootstrap.py file, I edit it and it still uses the frozen code. I even edited the file in the source tree itself by adding a few print calls then rebuilt cpython, and they seem to be consumed by the freeze pass, as nothing gets printed, how do you debug it properly? google is not helping me. import is failing at _gcd_import (name, package = None, level = 0) -> find and load. And if I use a different loading method by importing importlib (used in documentation page), it manages to obtain the spec which looks okay upon printing it, but fails upon trying to load and return the module object with spec.loader.create_module. Appreciate ideas or a proper debugging method for the import function.

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