From 2355d79e6013dae115a072cf5ac0103b7499e2aa Mon Sep 17 00:00:00 2001
From: likho <licho@firemail.cc>
Date: Sat, 23 Aug 2025 19:23:41 -0700
Subject: [PATCH] (initial) prints html tables of balances over time

---
 econ-demo.py | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 econ-demo.py

diff --git a/econ-demo.py b/econ-demo.py
new file mode 100644
index 0000000..abeb5c4
--- /dev/null
+++ b/econ-demo.py
@@ -0,0 +1,89 @@
+
+import pandas as pd
+
+def simple_interest(balances, rate=0.05, terms=3):
+    if terms <= 0:
+        print("Number of terms must be >0!")
+        return
+    new_bal = []
+    for balance in balances:
+        b = balance
+        for i in range(0,terms):
+            b = b + (b * rate)
+        new_bal.append(b)
+    return new_bal
+
+def share_of_wealth(balances):
+    total_money = sum(balances)
+    shares = []
+    for balance in balances:
+        shares.append(balance/total_money)
+    return shares
+
+def ubi(balances, dividend=10, terms=3):
+    new_bal = []
+    for balance in balances:
+        b = balance
+        for i in range(0,terms):
+            b = b + dividend
+        new_bal.append(b)
+    return new_bal
+
+def get_balances_over_time(names, balances, func):
+    if func is None:
+        print("Need a function!")
+        return
+    if len(names) != len(balances):
+        print("Every person needs a balance.")
+        return
+    data = {
+        'name' : names,
+        'initial' : balances
+    }
+    df = pd.DataFrame(data)
+    for t in range(1,4):
+        key = "term%i" % t 
+        frame = func(balances, terms=t)
+        if frame is not None:
+            df[key] = frame
+    return df
+
+# -------------
+
+def illustrate_share_of_wealth():
+
+    participants = ["Alice", "Bob", "Charlie"]
+    balances = [100,40,20]
+
+    print("In this demo, we have three participants.\n", participants)
+    print("They respectively have ", balances)
+
+    print("\nThe initial distribution of wealth is ")
+    print(share_of_wealth(balances))
+    print("\n")
+
+    df = get_balances_over_time (
+        participants, balances, simple_interest
+    )
+    print(df.to_html())
+
+    terms = 222
+    print(f"How much money exists after {terms} terms?")
+    #### In 222 terms, even C becomes a millionaire.
+    nb = simple_interest(balances, terms=terms)
+    print(nb)
+    print("\n")
+
+    df = get_balances_over_time (
+        participants, balances, ubi
+    )
+    print(df.to_html())
+
+    print("How much money exists after 999 terms?")
+    u = ubi(balances, terms=999)
+    print(u)
+
+    print("What is the share of wealth in a UBI economy?")
+    print(share_of_wealth(u))
+
+illustrate_share_of_wealth()