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ShopperCove

Hands-on notes on developer tools, written after the tool has actually been run.

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platform vs os.uname Inventory: Localhost Lab

Hands-on platform.platform vs os.uname host inventory lab: real ops/s plus cache notes, measured on Linux localhost today in this hands-on lab for SREs.

1 Oct 20264 min read
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uuid.uuid4 vs uuid.uuid1: Localhost Lab

Hands-on uuid.uuid4 vs uuid.uuid1 ID generation lab: real ops/s plus version/node checks, measured on Linux localhost today in this hands-on lab for SREs.

1 Oct 20263 min read
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cmath vs math.hypot Magnitudes: Localhost Lab

Hands-on cmath vs math.hypot magnitude ops lab: real ops/s for abs, polar, and phase, measured on Linux localhost today in this hands-on lab for SREs.

1 Oct 20263 min read
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dataclasses.asdict vs vars: Localhost Lab

1 Oct 20264 min read
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xml.etree vs json Nested Records: Localhost Lab

1 Oct 20264 min read
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statistics.quantiles vs Manual Percentile: Localhost Lab

1 Oct 20264 min read
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Python dataclass replace vs Manual Copy: Which Is Faster?

Hands-on dataclasses.replace vs manual copy/new-instance lab: real ops/s updating one field, measured on Linux localhost in this hands-on lab for SREs.

1 Oct 20265 min read
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islice vs list Slice Windows: Localhost Lab

Hands-on itertools.islice vs list slice window lab: real ops/s taking ranges from sequences, measured on Linux localhost in this hands-on lab for SREs.

1 Oct 20264 min read
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html.escape vs Manual Replace: Localhost Lab

A hands-on localhost lab comparing html.escape with chained str.replace for safe HTML escaping.

1 Oct 20264 min read
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difflib vs set Ops Similarity: Localhost Lab

Hands-on difflib.SequenceMatcher vs set Jaccard token similarity: real ops/s on token lists, measured on Linux localhost in this hands-on lab for SREs.

1 Oct 20264 min read
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hmac.compare_digest vs ==: Localhost Lab

Hands-on hmac.compare_digest vs bytes == verify lab: real ops/s plus HMAC-SHA256 construct costs, measured on Linux localhost in this eng lab for SREs.

1 Oct 20264 min read
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WeakValueDictionary vs dict Cache: Localhost Lab

WeakValueDictionary vs strong dict cache: insert and lookup throughput, plus GC-driven drop on Linux localhost.

1 Oct 20264 min read
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