Python Basic — 079: Budget executor etiquette with observability hooks centred on `for loops, range(), and iteration habits` [471232] — Learn

Lesson 079: for loops, range(), and iteration habits

Focus

Prints are breadcrumbs, not ornamentation: Basic drills for loops, range(), and iteration habits; spin token 694052 makes this page unlike its neighbours.

Key ideas

Angle Basic: micro cadence 9 mixes for loops, range(), and iteration habits; spin 46495.
Ritual: Predict the checksum line, then reconcile on mismatch.
Guardrail: separate demo-trick from shipping discipline verbally.

Example (`LESSON_UID = "basic-079"`)

# Basic drill L079 topic-7 micro-8 pattern-12
LESSON_UID = "basic-079"
spin_a, spin_b, spin_c = 607, 319, 909

from io import StringIO

buf = StringIO()
rounds = 3 + 8 % 5
for idx in range(rounds):
    buf.write(f"seg-{idx}-{(idx * 79 + spin_b) % 997}\n")
buf.seek(0)
dump = buf.read()
print("lines", dump.count("\n"))
print("peek", dump.splitlines()[0] if dump else "<empty>")

Practice

Practice 13: Verbal-diff this against lesson 78 aloud. Literal nudge 13.

Fingerprints

lesson_uid: basic-079
umbrella band: for loops, range(), and iteration habits (9/10)
lesson_index: 2553