conversions-from-input.py

inputs = [
["A", 2, "B"],
["B", 2, "C"],
["C", 2, "D"],
["D", 2, "E"],
["E", 2, "F"],
["F", 2, "G"],
["G", 2, "H"],
["H", 2, "I"],
["I", 2, "J"],
["J", 2, "K"],
["K", 2, "L"],
["L", 2, "M"],
["M", 2, "N"],
["N", 2, "O"],
["O", 2, "P"],
["P", 2, "Q"],
["Q", 2, "R"],
["X", 2, "Y"] ]

all = inputs.copy()

count = 0
for z in range(1, 10000):
    count += 1
    new_all = all.copy()
    found = False
    for a in all:
        for b in all:
            if a[0] == b[2] and a[2] != b[0]:
                new_item = [b[0], a[1] * b[1], a[2]]
                if not new_item in new_all:
                    found = True
                    new_all.append(new_item)
    if not found:
        break
    all = new_all.copy()

print("That took " + str(count) + " outer loops.")
new_all = []
for x in all:
    new_all.append(x)
    y = x.copy()
    y.reverse()
    y[1] = 1 / y[1]
    new_all.append(y)

all = sorted(new_all, key=lambda x: (x[0], x[2]))
for x in all:
    print(x)