commit 17c705dac57022755a08972ac9b7ff848c9b9731
Author: Michael Pilosov <consistentbayes@gmail.com>
Date:   Fri Nov 11 13:18:42 2022 -0700

    working mvp, missing corners/splits/triples

diff --git a/app.py b/app.py
new file mode 100644
index 0000000..fc449bb
--- /dev/null
+++ b/app.py
@@ -0,0 +1,93 @@
+from typing import List, Dict
+from functools import reduce
+
+FEASIBLE_MOVES = sorted({
+    *[f"street-{i}" for i in range(1,14)],
+    *[f"col-{i}" for i in range(1,4)],
+    *["1-12", "13-24", "25-36", "first-half", "last-half", "even", "odd", "red", "black"],
+})
+
+ALIASES = {"reds", "blacks", "evens", "odds"}
+
+def expectation(bet):
+    odds = 0
+    pmnt = 0
+    return odds * pmnt
+
+
+# 38 numbers, 6 street bets, 2 half-bets,
+
+
+# payout grid based on bets placed.
+# a street bet is the same as splitting the bet across all the numbers in the group.
+# will use a function to distribute / interpret the bets, but it seems like we only need to track the numbers on the wheel.
+
+
+def init_bet() -> Dict[int, float]:
+    D = {i: 0 for i in range(-1, 37)}
+    return D
+
+
+def place_bet(bet: Dict[str, float], on: int, amount: float):
+    bet = bet.copy()
+    bet[on] += amount
+    return bet
+
+
+def interpret_bet(on="red", amount=0, bet=None):
+    assert (on in FEASIBLE_MOVES) or (on in ALIASES), f"Bet not understood. Choose from feasible moves:\n {FEASIBLE_MOVES}"
+    if bet is None:
+        bet = init_bet()
+    else:
+        bet = bet.copy()
+    REDS = {1, 3, 5, 7, 9, 12, 14, 16, 18, 19, 21, 23, 25, 27, 30, 32, 34, 36}
+    BLACKS = set(range(37)) - REDS
+    NUMS = {}
+    on = on.strip().replace(" ", "-")
+    div = 18
+    if on in ("red", "reds"):
+        NUMS = REDS
+    if on in ("black", "blacks"):
+        NUMS = BLACKS
+    if on in ("odd", "odds"):
+        NUMS = {i for i in range(37) if i % 2 == 0}
+    if on in ("even", "evens"):
+        NUMS = {i for i in range(37) if i % 2}
+    if on in ("first-18", "first-half"):
+        NUMS = set(range(1, 19))
+    if on in ("last-18", "last-half"):
+        NUMS = set(range(19, 37))
+    if on in ("1-12", "13-24", "25-36"):
+        low, high = on.split("-")
+        NUMS = set(range(low, high+1))
+        div = 12
+    if not NUMS:
+        other_bet = on.split("-")
+        if other_bet[0] == "street":
+            street = int(other_bet[1]) - 1
+            assert street in list(range(13))
+            NUMS = {i for i in range(street+1, street+4)}
+            div = 3
+        elif other_bet[0] == "col":
+            col = int(other_bet[1]) - 1
+            assert col in list(range(0,3))
+            NUMS = {i for i in range(1, 37) if (i-1) % 3 == col}
+            div = 12
+        else:
+            raise ValueError("unsupported bet")
+
+    bet = reduce(lambda bet, num: place_bet(bet, num, amount / div), NUMS, bet)
+
+    return bet
+
+
+bet = init_bet()
+bet = place_bet(bet, 21, 20)
+print(bet[21])
+#bet = interpret_bet("red", 36, bet)
+#bet = interpret_bet("25-36", 1, bet)
+bet = interpret_bet("street-1", 3, bet)
+bet = interpret_bet("street-10", 3, bet)
+bet = interpret_bet("col-1", 12, bet)
+print(bet[21])
+print(bet)