Intro I have rewritten one of my previously sequential algorithms to work in a parallel fashion (we are talking about real parallelism, not concurrency or threads). I run a batch script that runs my “worker” python nodes and each will perform the same task but on a different offset (no data sharing between processes). If it helps visualize imagine a
Tag: operating-system
what is the Java equivalent of Pythons’s subprocess shell=True property?
I’ve been using python for a long time. python’s system and subprocess methods can take shell=True attibute to spawn an intermediate process setting up env vars. before the command runs. I’ve be using Java back and forth and using Runtime.exec() to execute shell command. I find difficulty to run some commands in java with success like “cp -al”. I searched
How to rename files from old to new from csv file using python?
I have a CSV file which has two columns: I have more than a thousand pictures which I need to rename using this method. Can this be done using python? Thanks a lot. Answer You can use zip to iterate over pairs of corresponding items: As you are batch processing a large number of files, it might also be worth
Python/pandas/os: get the files in this folder and iterate over those that fit this naming convention
I want to perform some data cleaning on all the files in the same folder as my script that fit a naming convention. The data cleaning I am fine with, but it’s just the same folder that I am struggling with. Previous working code: Current code: I get the error code No such file or directory: ‘C’ Do I need
Copy files from multiple specific subfolders
Under the file path D:/src, I have images folders and its subfolders which have a regular structure as follows: I want to copy all .jpg files in Subfolder b from Folder A, B, C and so on to a new folder Subfolder b in D:/dst. How can I do it in Python? Thanks. Here is what I have found from
Shortest Time Remaining Next (STRN) Scheduling
Another user posted this question on Shortest Job First (SJF). Here’s the example: How would this be solved for Shortest Remaining Time Next? The preemptive version of Shortest Job First. I understand that the process with smallest amount of time remaining until completion is selected to execute. However, what happens if a new process arrives that has a burst time
Why does Raspberry Pi need an OS to work?
I am just new to world of electronics. I was just looking about Raspberry Pi as I want to work on it, but a thing that I found that everyone is installing an OS first on the Raspberry Pi. I have worked upon PICs(16f) and Arduino board and it doesn’t need that I just write a code and make burn
How do I open a visible excel full size?
I am running a python script on both my laptop and home computer with: This works great, however I cannot seem to find anywhere on how to make this full size Any idea on how I can make it full size through python? I use both Apache OpenOffice and microsoft Excel image Answer You should be able to maximize the
Measure execution time in CPU cycles?
My laptop spent 1.3 seconds to complete the process posted below. The same code ran on another machine and the timing was different: 2.1 seconds. This is because another machine runs on different Operation System, it has different CPU, memory and etc. I wonder if instead of timing the process in seconds there would be a way to measure CPU
putting file names in an array using os in python
I want to create a program that will use os to make an ls of a directory and then put the files in a array. However, ls does not list the names one by one, so I am kind of stuck, because there’s nothing constant by which I can tell when the next name starts. Here is the actual code: