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In many other programming languages, the execution of code starts in a specifically named function (such as main) which is expected to have a specific signature, which allows that function to recei...
#1: Initial revision
by
Karl Knechtel
·
2024-06-15T09:19:16Z (5 months ago)
How can I access and use command-line arguments in Python?
In many other programming languages, the execution of code starts in a specifically named function (such as `main`) which is expected to have a specific signature, which allows that function to receive arguments from the command line. For example, we may write `int main(int argc, char** argv)` in C or C++, or `public static void main(String[] args)` in Java, or `public static void Main(string[] args)` in C#. But I know that [Python doesn't have anything like this, and code instead runs top to bottom](https://software.codidact.com/posts/291322). So, how can I access the command-line arguments from a Python script? In particular, do I need to distinguish between cases where the code is run via the Python interpreter (a command like `python myfile.py`) or [directly](https://software.codidact.com/posts/291736)?