Initialize

.gitignore

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+__pycache__

brainfuck.py

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+import sys
+import getch
+
+cells = [0] * 10000
+
+f = open(sys.argv[1], 'r')
+code = f.read()
+
+pointer = 0
+code_i = 0
+brackets = {}
+
+matching_queue = []
+for i, c in enumerate(code):
+    if c == '[':
+        matching_queue.append(i)
+    elif c == ']':
+        opening_bracket = matching_queue.pop()
+        brackets[i] = opening_bracket
+        brackets[opening_bracket] = i
+
+while code_i < len(code):
+    c = code[code_i]
+    if c == '>':
+        pointer += 1
+    elif c == '<':
+        pointer -= 1
+    elif c == '+':
+        cells[pointer] += 1
+    elif c == '-':
+        cells[pointer] -= 1
+    elif c == '.':
+        print(chr(cells[pointer]), end='')
+    elif c == ',':
+        cells[pointer] = ord(getch.getch())
+    elif c == '[' and cells[pointer] == 0:
+        code_i = brackets[code_i]
+    elif c == ']' and cells[pointer] != 0:
+        code_i = brackets[code_i]
+    code_i += 1

getch.py

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+class _Getch:
+    """Gets a single character from standard input.  Does not echo to the
+screen."""
+    def __init__(self):
+        try:
+            self.impl = _GetchWindows()
+        except ImportError:
+            self.impl = _GetchUnix()
+
+    def __call__(self): return self.impl()
+
+
+class _GetchUnix:
+    def __init__(self):
+        import tty, sys
+
+    def __call__(self):
+        import sys, tty, termios
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(sys.stdin.fileno())
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+
+
+class _GetchWindows:
+    def __init__(self):
+        import msvcrt
+
+    def __call__(self):
+        import msvcrt
+        return msvcrt.getch()
+
+
+getch = _Getch()