Python Basic — 072: Encode async relays with property-test curiosity centred on `for loops, range(), and iteration habits` [736659] — Learn

Lesson 072: 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 597437 makes this page unlike its neighbours.

Key ideas

Angle Basic: micro cadence 2 mixes for loops, range(), and iteration habits; spin 54603.
Ritual: Annotate every meaningful print before deleting noise.
Guardrail: call out latent off-by-one before shipping analogues.

Example (`LESSON_UID = "basic-072"`)

# Basic drill L072 topic-7 micro-1 pattern-12
LESSON_UID = "basic-072"
spin_a, spin_b, spin_c = 702, 281, 346

from io import StringIO

buf = StringIO()
rounds = 3 + 1 % 5
for idx in range(rounds):
    buf.write(f"seg-{idx}-{(idx * 72 + 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 16: Export checkpoints into bullets for teammate review. Literal nudge 16.

Fingerprints

lesson_uid: basic-072
umbrella band: for loops, range(), and iteration habits (2/10)
lesson_index: 2280