Creating source code is the first phase in a CI/CD pipeline. During this phase, developers translate requirements into algorithms, features, and behaviours. Tools vary and depend on purpose and language of project, developer preferences and other variables. There is no uniform source creation pipeline.
A source code creation pipeline may incorporate any of the following:
An integrated development environment (IDE) such as PyCharm or Codium.
Code-quality tools, such as black, mypy, flake8, isort, and vulnerability scanners.
Code repositories and version control systems, such as Git.
Lock down development machines