fix direction

turinglab/emulator.py

@@ -1,5 +1,11 @@
 from collections import defaultdict
 
+DIRECTIONS = {
+    '>': 1,
+    '<': -1,
+    '.': 0
+}
+
 
 class Emulator():
     '''
@@ -28,7 +34,7 @@ class Emulator():
             self.tape[self.head] = symbol
 
             self.current_state = state
-            self.head += 1 if direction == '>' else -1
+            self.head += DIRECTIONS[direction]
             
             self.tape[self.head] = self.tape[self.head]
             
@@ -45,5 +51,4 @@ class Emulator():
         return [self.head, self.current_state, defaultdict(lambda: self.blank_symbol, self.tape)]
 
         
-        
 

turinglab/input.py

@@ -1,5 +1,5 @@
 import csv
-import pprint
+import re
 
 def from_tur(filename):
     f = open(filename, "rb")
@@ -65,7 +65,7 @@ def from_file(filename: str):
             if not action: 
                 continue
 
-            new_symbol, direction, new_state = list(action)
+            new_symbol, direction, new_state = re.split('([<|>|.])', action)
 
             if new_symbol == "_":
                 new_symbol = 'λ'