How do I execute a program or call a system command in Python?
In Python, you can execute a system command using the
subprocess.run is a much better alternative. The official also documentation recommends
subprocess.run over the
Let’s look at an example. In the following code,
ls command will be executed along with the
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
We are hiring.
Software is our way of making the world a tiny bit better. We build tools for the makers of tomorrow.
Help us in making the internet more reliable.
Help us with developer education and get paid.
Reliability is the
Delightful observability tools that turn your logs & monitoring into a secret weapon for shipping better software faster.Explore Better Stack