How Execute a Program or Call a System Command in Python?
In Python, you can execute a system command using the os.system
. However, subprocess.run
is a much better alternative. The official also documentation recommends subprocess.run
over the os.system
.
Let’s look at an example. In the following code, ls
command will be executed along with the -la
option:
import subprocess
subprocess.run(['ls', '-la'])
The run method takes an array argument where the first element of the array is the program, you want to call and the rest of the elements are program arguments that will be passed to the program, unlike the c/c++ equivalent exec
where the first argument has to be the name of the program. The method also returns an integer value representing the exit code of the called program.
-
What are metaclasses in Python?
In Python, a metaclass is the class of a class. It defines how a class behaves, including how it is created and how it manages its instances. A metaclass is defined by inheriting from the built-in ...
Questions -
How to use the ternary conditional operator in Python?
The ternary conditional operator is a shortcut when writing simple conditional statements. If the condition is short and both true and false branches are short too, there is no need to use a multi-...
Questions -
What Does the “yield” Keyword Do in Python?
To better understand what yield does, you need first to understand what generator and iterable are. What is iterable When you use a list or list-like structure, you can read the values from the lis...
Questions -
What Does if name == “main”: Do in Python?
The if __name__ == "main" is a guarding block that is used to contain the code that should only run went the file in which this block is defined is run as a script. What it means is that if you run...
Questions
Make your mark
Join the writer's program
Are you a developer and love writing and sharing your knowledge with the world? Join our guest writing program and get paid for writing amazing technical guides. We'll get them to the right readers that will appreciate them.
Write for usBuild on top of Better Stack
Write a script, app or project on top of Better Stack and share it with the world. Make a public repository and share it with us at our email.
community@betterstack.comor submit a pull request and help us build better products for everyone.
See the full list of amazing projects on github