🌐 Mailman 3 July 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: compiling 3.7.0 from source with custom libffi path
by tomerv＠gmail.com May 6, 2020

May 6, 2020

On Monday, September 24, 2018 at 11:48:59 AM UTC+3, Fetchinson . wrote: > I'm trying to compile python 3.7.0 from source with a custom libffi > path and the compiler/linker doesn't seem to pick up the right > version. The system libffi doesn't have the development files so I've > installed the latest libffi (also from source) to /opt/custom but > still I get > > INFO: Could not locate ffi libs and/or headers > > Failed to build these modules: > _ctypes > > Although I compile python with --prefix=/opt/custom because that's the > location I'd like to install it too. So how do I tell the build system > where to find my custom libffi? > > Cheers, > Daniel > > > > -- > Psss, psss, put it down! - http://www.cafepress.com/putitdown After some messing around with the build scripts, I figured it out. This works for me: 0. Choose installation path for FFI -> $LIBFFI_PATH 1. Configure, build, install libffi: 1a. Download libffi from https://sourceware.org/libffi/ and untar it 1b. ./configure --prefix $LIBFFI_PATH 1c. make 1d. make install 2. Configure CPython: (I'm using tcsh syntax, it is slightly different with bash) 2a. setenv PKG_CONFIG_PATH $LIBFFI_PATH/lib/pkgconfig/ 2b. setenv LDFLAGS "-L $LIBFFI_PATH/lib64/" 2c. /configure --with-pydebug 3. Build 3a. setenv LD_LIBRARY_PATH "${LIBFFI_PATH}/lib64/" 3b. make -s -j2 Good luck!

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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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Difference between os.path.isdir and Path.is_dir
by Kirill Balunov Dec. 14, 2019

Dec. 14, 2019

Hi all! It is expected that: ``` >>> import os >>> from pathlib import Path >>> dummy = " " # or "" or " " >>> os.path.isdir(dummy) False >>> Path(dummy).is_dir() True ``` or was it overlooked? with kind regards, -gdg

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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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ANN: Austin -- CPython frame stack sampler 0.7.0
by Gabriele July 30, 2019

July 30, 2019

I am delighted to announce the release 0.7.0 of Austin. If you haven't heard of Austin before, it is a frame stack sampler for CPython. It can be used to obtain statistical profiling data out of a running Python application without a single line of instrumentation. This means that you can start profiling a Python application straightaway, even while it's running on a production environment, with minimal impact on performance. The simplest way of using Austin is by piping its output to FlameGraph for a quick and detailed representation of the collected samples. The latest release introduces a memory profiling mode which allows you to profile memory usage. Austin is a pure C application that has no other dependencies other than the C standard library. Its source code is hosted on GitHub at https://github.com/P403n1x87/austin The README contains installation and usage details, as well as some examples of Austin in action. Details on how to contribute to Austin's development can be found at the bottom of the page. I hope that you can find Austin useful! All the best, Gabriele

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.python_history file
by Harry Grey July 30, 2019

July 30, 2019

Hy to Everyone first of all : Sorry for my english what do you think about introducing a feature that allows you to group by date and after to filter the istruction that are written in the .python_history file: maybe with a new structure for .python_history: """ ###DATE-OF-SOME-DAY-START### ###DATE-OF-SOME-DAY-END### """ and maybe developing a new tool, or a core functionality of python interpreter callable as an argument in the cmd, that allow you to parse the .python_history file in given date: With a tool: PhYstory -d 16 -m 03 -y 2019 or like python Functionality: python -hist 16-03-2019/17-03-2019 and why not? why not have a the chance to enable and disable, at will, writing in the .python_history: "" >>> skip_hist >>> >>> # Make some unusefull instruction >>> # Ignored in the history >>> class TryClass: >>> # Some Code >>> >>> >>> tc = TryClass() >>> keep_hist >>> # make some interesting code >>> # and keep it in the history file. """ Thanks DG.

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