How do I define a function with optional arguments? Asked 13 years, 11 months ago Modified 1 year, 7 months ago Viewed 1.2m times

Jul 12, 2011 · I want to define a two-dimensional array without an initialized length like this: Matrix = [][] But this gives an error: IndexError: list index out of range

1 Have a look at SymPy: How to define variables for functions, integrals and polynomials. You can define it according to these two ways: a Python function with def as described above a Python …

By "modern Python" I mean something that will run in Python 2.5 but be 'correct' for the Python 2.6 and Python 3.* way of doing things. And by "custom" I mean an Exception object that can …

For a language-agnostic consideration of the design decision, see What is the advantage of having this/self pointer mandatory explicit?. To close debugging questions where OP omitted a …

That file is what makes the directory an actual Python package. For example, say you have the following files in a package: package ├── __init__.py ├── module_1.py └── module_2.py …

1 Python philosophy is to be readable. That's why it's good practice to define your attributes in __init__() even if it's optional. In the same spirit, you have to ask yourself what clearer for …

181 PEP 263 defines how to declare Python source code encoding. Normally, the first 2 lines of a Python file should start with:

May 25, 2022 · How to define "python_requires" in pyproject.toml using setuptools? Asked 3 years, 9 months ago Modified 2 years, 6 months ago Viewed 21k times

Jan 3, 2016 · How to define new variable as float? [duplicate] Asked 10 years, 2 months ago Modified 10 years, 1 month ago Viewed 76k times