Implement day 25, in python

2017/README.md

@@ -4,7 +4,7 @@ Previously, I have been moderately successful in learning Rust and
 Python from doing these challegnes. For this year, I'm upping the ante
 and using 25 different programming languages.
 
-The current plan, in no particular order:
+These are the languages that I have used, in alphabetical order:
 
 - [x] AWK - [Day 04](./day-04/solution.awk)
 - [x] Bash/shell script - [Day 02](./day-02/solution.sh)
@@ -23,14 +23,11 @@ The current plan, in no particular order:
 - [x] Lua - [Day 18](./day-18/solution.lua)
 - [x] Matlab - [Day 06](./day-06)
 - [x] Node.js - [Day 12](./day-12/solution.js)
-- [ ] Objective C
 - [x] Perl - [Day 05](./day-05/solution.pl)
 - [x] PHP - [Day 19](./day-19/solution.php)
-- [ ] Python
+- [x] Python - [Day 25](./day-25/solution.py)
 - [x] R - [Day 20](./day-20/solution.r)
 - [x] Ruby - [Day 08](./day-08/solution.rb)
 - [x] Rust - [Day 14](./day-14/solution.rs)
 - [x] Scala - [Day 11](./day-11/solution.scala)
 - [x] Swift - [Day 17](./day-17/solution.swift)
-
-… and then I will be done!