Lazily Yield Numbers from Lines

Medium ⏱ 12 min 54% acceptance ★★★★★ 4.7

Write the generator numbers_in(lines) that takes any iterable of strings and yields each line converted to float — silently skipping lines that don't parse. Chain-friendly: feeding it a file object processes gigabytes lazily.

Examples

Example 1

Input

list(numbers_in(['3.5', 'oops', '7']))

Output

[3.5, 7.0]

Explanation

The bad line was skipped mid-stream.

Constraints

Must be a generator (yield).
Bad lines skipped via try/except.

Topics

Iterators & Generatorslazy pipeline

Companies

SplunkElasticCloudera

Hints

Hint 1

try: yield float(line.strip()) except ValueError: continue.

Hint 2

The caller controls consumption pace.

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