Python: -7 // 2 = -4?!PRO

// rounds DOWN (towards minus infinity), so -3.5 becomes -4. int(-7 / 2) rounds towards zero.

# -7 // 2 = -4 ?!
# // is FLOOR division: it rounds DOWN (towards minus infinity), not towards zero.
print(-7 // 2)        # -4 ?!   (-3.5 rounded down is -4)
print(7 // 2)         # 3       (3.5 rounded down is 3)

# Fix: drop the fraction instead (round towards zero)
print(int(-7 / 2))    # -3 ✓
import math
print(math.trunc(-7 / 2))   # -3 ✓

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