import itertools

pence = list(range(201))
two_pence = list(range(101))
five_pence = list(range(41))
ten_pence = list(range(21))
twenty_pence = list(range(11))
fifty_pence = list(range(5))
pound = [0, 1, 2]
two_pound = [0, 1]

results = []
combos = itertools.product(
                           pence,
                           two_pence,
                           five_pence,
                           ten_pence,
                           twenty_pence,
                           fifty_pence,
                           pound,
#                          two_pound
                           )

for combo in combos:
    if combo[0]       \
     + combo[1] * 2   \
     + combo[2] * 5   \
     + combo[3] * 10  \
     + combo[4] * 20  \
     + combo[5] * 50  \
     + combo[6] * 100 == 200:
         results.append(combo)

results.append((0, 0, 0, 0, 0, 0)) # representing 1 pound coin

print(results)
print(len(results))