INNER CODE UNIT · Python

ALPH

moderndive/ModernDive_book · scripts/assign_exercise_hashes.py:9

ALPH = string.digits + string.ascii_lowercase  # base36

def hash4(text):
    h = int(hashlib.sha1(text.encode()).hexdigest(), 16)
    s = ""
    for _ in range(4):
        s += ALPH[h % 36]; h //= 36
    return s

# 1. collect existing hashes (for global-uniqueness when minting new ones)
files = sorted(glob.glob("exercises/[0-9][0-9].yml"))
existing = set()
for f in files:
    for e in yaml.safe_load(open(f)).get("exercises", []):
        if e.get("hash"):
            existing.add(e["hash"])

def mint(ch, prompt):

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