Don't Repeat Yourself avoids duplicating equivalent logic. When benchmarking several file formats, consolidate shared timing code in a loop instead of copying it for every method. section 12.6
A Python dictionary can map format names to dataframe-writing methods. Iterating over those key–value pairs keeps the workflow cleaner, easier to debug, and easier to extend. section 12.6
Benchmarking file formats
For a NYC parking-violations dataframe, one loop benchmarks JSON, CSV, and feather output. The recorded write times are about 46, 114, and 8 seconds respectively, while shared timing logic appears only once.









