1. 9139cc6 Issue #1588: Add complex.__format__. by Eric Smith · 16 years ago
  2. dc13b79 Refactor and clean up str.format() code (and helpers) in advance of optimizations. by Eric Smith · 17 years ago
  3. a9f7d62 Backport of PEP 3101, Advanced String Formatting, from py3k. by Eric Smith · 17 years ago