max_money.py: use variable start_block_reward (eliminate magic number)

Author: theStack

code/max_money.py

@@ -1,12 +1,11 @@
-# Original block reward for miners was 50 BTC
-start_block_reward = 50
+# Original block reward for miners was 50 BTC = 50 0000 0000 Satoshis
+start_block_reward = 50 * 10**8
 # 210000 is around every 4 years with a 10 minute block interval
 reward_interval = 210000
 
 
 def max_money():
-    # 50 BTC = 50 0000 0000 Satoshis
-    current_reward = 50 * 10**8
+    current_reward = start_block_reward
     total = 0
     while current_reward > 0:
         total += reward_interval * current_reward