Python Basic — 077: Budget closure capture with thread-safe queues centred on `for loops, range(), and iteration habits` [164320] — Learn

Lesson 077: for loops, range(), and iteration habits

Focus

This page is deliberate repetition with new literals: Basic drills for loops, range(), and iteration habits; spin token 691248 makes this page unlike its neighbours.

Key ideas

Angle Basic: micro cadence 7 mixes for loops, range(), and iteration habits; spin 72477.
Ritual: Swap one benign literal twice to see binding effects.
Guardrail: pick the budget that keeps this rehearsal honest.

Example (`LESSON_UID = "basic-077"`)

# Basic drill L077 topic-7 micro-6 pattern-12
LESSON_UID = "basic-077"
spin_a, spin_b, spin_c = 649, 719, 317

from io import StringIO

buf = StringIO()
rounds = 3 + 6 % 5
for idx in range(rounds):
    buf.write(f"seg-{idx}-{(idx * 77 + 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 76 aloud. Literal nudge 13.

Fingerprints

lesson_uid: basic-077
umbrella band: for loops, range(), and iteration habits (7/10)
lesson_index: 2475