Requirements for processing modules
Any module (a.k.a. program, code or tool) must adhere to the following standards of best-practice software development. The aim of these guidelines is to ensure reliability of our services, minimize maintenance requirements, and guarantee reproducibility of results across platforms.
General requirements
The program, code or tool must be implemented in Python (≥3.10) or R; compiled executables are not acceptable for security reasons
Distribution of the source code - via an online version-controlled repository (preferably GitHub) to which the IIASA admin team has access; or - installation via a package manager (pip, conda, CRAN).
The program must run on Debian (preferably Ubuntu)
The dependencies must be clearly stated, e.g. as Dockerfile (describing execution environment, library dependencies etc.) Python package dependencies according to packaging user guide (e.g. as environment.yml, requirements.txt etc.) R dependencies
The license must be clearly stated.
The documentation of the program, code or tool must include: - Purpose of the program and individual top-level functions - Instructions how to run the program - Expected input (variables, region mappings) and standard output - Explanation of any settings and optional parameters
Application programming interface
Option 1:
The module is called via a command-line interface (CLI) and take the following arguments:
input
: path to an IAMC-formatted file (xlsx
orcsv
)output
: path where to write an output file (usually derived timeseries data) in the same formatAny relevant settings and optional parameters must also be specified via the CLI
e.g. "python process.py --input path-to-input-file.xlsx --output path-to-output-file.xlsx"
Option 2 (applicable for packages/functions written in Python):
Importable Python functions that take and return pandas.DataFrame
(with columns
folllowing the IAMC format) or pyam.IamDataFrame
objects can be called as part
of the processing workflow. Any settings or optional parameters must be given as keyword
arguments to the top-level function, preferably with the option to set them via a
settings or configuration file.