Football (Python): Added

37_Football/python/README.md

@@ -1,3 +1,30 @@
 Original source downloaded [from Vintage Basic](http://www.vintage-basic.net/games.html)
 
 Conversion to [Python](https://www.python.org/about/)
+
+
+## Porting notes
+
+Variables:
+
+* E: score_limit
+* H(2): Scores
+* T(2): Team toggle
+* T: team who currently possesses the ball
+* L: Offset
+* P: Who has the ball
+* K: yards
+* R: Runback current team in yards
+* P$(20): Actions (see data.json)
+
+Functions:
+
+* `P$(I)`: Access index `I` of the `P` array
+* ABS: abs (absolute value)
+* RND(1): random()
+* GOSUB: Execute a function - will jump back to this
+* GOTO: Just jump
+
+Patterns:
+
+* `T=T(T)`: Toggle the team who currently has the ball