MetaPython Roadmap & Release Nodes

Version 0.2.1, 0.2.2

• Added hygienic macros via defcode blocks

• Allow variable capture within defcode blocks by passing arguments:

  defcode(?a):
      a = 5

  produces code like:

  a = 5
  

  while the following:

  defcode():
      a = 5

  produces something like:

  _mpy_0 = 5
  

  Version 0.2.1 introduced this syntax and version 0.2.2 allowed for variable argument lists in defcode() declarations like defcode(*args).

Version 0.2

• Extensive syntax redesign, allowing block macros $if..., $for..., etc.
• Removal of Jinja2 requirements: defcode blocks now simply use import-time constructs to control their expansion.
• Macro arguments are now evaluated by default and must be quoted using the ? operator to pass them as code blocks.
• Major rework of internal architecture

Version 0.1

• Original attempt at macros for Python
• Uses Jinja2 for defcode blocks