performance

copy.copy vs dict.copy Shallow: Localhost Lab

math.fsum vs sum Float Totals: Localhost Lab

Hands-on math.fsum vs builtin sum for float totals: real items/s plus cancellation accuracy, measured on Linux localhost in this hands-on lab for SREs.

fractions.Fraction vs float: Localhost Lab

Hands-on fractions.Fraction vs float for exact ratios: real ops/s and exactness checks, measured on Linux localhost today in this hands-on lab for SREs.

ExitStack vs Nested with Resources: Localhost Lab

Hands-on contextlib.ExitStack vs nested with and manual close: real cycles/s for N resources, measured on Linux localhost in this hands-on lab for SREs.

itertools.batched vs Manual Chunking: Localhost Lab

Hands-on itertools.batched vs manual list-slice chunking: real items/s batching sequences, measured on Linux localhost today in this hands-on lab for SREs.

ipaddress vs String Prefix Allowlist: Localhost Lab

Hands-on ipaddress CIDR containment vs naive string prefix allowlists: real checks/s, measured on Linux localhost today in this hands-on lab for SREs.

ChainMap vs Merged Dict Lookup: Localhost Lab

Hands-on collections.ChainMap vs merged dict config lookup: real ops/s on layered keys, measured on Linux localhost today in this hands-on lab for SREs.

lru_cache vs functools.cache: Is There Any Difference?

graphlib Topo vs Manual Kahn: Localhost Lab

Queue vs deque Threaded Handoff: Localhost Lab