Converted snake game code for python3

Snake Game Python 3/curses/__init__.py

@@ -0,0 +1,109 @@
+"""curses
+
+The main package for curses support for Python.  Normally used by importing
+the package, and perhaps a particular module inside it.
+
+   import curses
+   from curses import textpad
+   curses.initscr()
+   ...
+
+"""
+
+from _curses import *
+import os as _os
+import sys as _sys
+
+# Some constants, most notably the ACS_* ones, are only added to the C
+# _curses module's dictionary after initscr() is called.  (Some
+# versions of SGI's curses don't define values for those constants
+# until initscr() has been called.)  This wrapper function calls the
+# underlying C initscr(), and then copies the constants from the
+# _curses module to the curses package's dictionary.  Don't do 'from
+# curses import *' if you'll be needing the ACS_* constants.
+
+def initscr():
+    import _curses, curses
+    # we call setupterm() here because it raises an error
+    # instead of calling exit() in error cases.
+    setupterm(term=_os.environ.get("TERM", "unknown"),
+              fd=_sys.__stdout__.fileno())
+    stdscr = _curses.initscr()
+    for key, value in _curses.__dict__.items():
+        if key[0:4] == 'ACS_' or key in ('LINES', 'COLS'):
+            setattr(curses, key, value)
+
+    return stdscr
+
+# This is a similar wrapper for start_color(), which adds the COLORS and
+# COLOR_PAIRS variables which are only available after start_color() is
+# called.
+
+def start_color():
+    import _curses, curses
+    retval = _curses.start_color()
+    if hasattr(_curses, 'COLORS'):
+        curses.COLORS = _curses.COLORS
+    if hasattr(_curses, 'COLOR_PAIRS'):
+        curses.COLOR_PAIRS = _curses.COLOR_PAIRS
+    return retval
+
+# Import Python has_key() implementation if _curses doesn't contain has_key()
+
+try:
+    has_key
+except NameError:
+    from .has_key import has_key
+
+# Wrapper for the entire curses-based application.  Runs a function which
+# should be the rest of your curses-based application.  If the application
+# raises an exception, wrapper() will restore the terminal to a sane state so
+# you can read the resulting traceback.
+
+def wrapper(*args, **kwds):
+    """Wrapper function that initializes curses and calls another function,
+    restoring normal keyboard/screen behavior on error.
+    The callable object 'func' is then passed the main window 'stdscr'
+    as its first argument, followed by any other arguments passed to
+    wrapper().
+    """
+
+    if args:
+        func, *args = args
+    elif 'func' in kwds:
+        func = kwds.pop('func')
+    else:
+        raise TypeError('wrapper expected at least 1 positional argument, '
+                        'got %d' % len(args))
+
+    try:
+        # Initialize curses
+        stdscr = initscr()
+
+        # Turn off echoing of keys, and enter cbreak mode,
+        # where no buffering is performed on keyboard input
+        noecho()
+        cbreak()
+
+        # In keypad mode, escape sequences for special keys
+        # (like the cursor keys) will be interpreted and
+        # a special value like curses.KEY_LEFT will be returned
+        stdscr.keypad(1)
+
+        # Start color, too.  Harmless if the terminal doesn't have
+        # color; user can test with has_color() later on.  The try/catch
+        # works around a minor bit of over-conscientiousness in the curses
+        # module -- the error return from C start_color() is ignorable.
+        try:
+            start_color()
+        except:
+            pass
+
+        return func(stdscr, *args, **kwds)
+    finally:
+        # Set everything back to normal
+        if 'stdscr' in locals():
+            stdscr.keypad(0)
+            echo()
+            nocbreak()
+            endwin()

Snake Game Python 3/curses/ascii.py

@@ -0,0 +1,99 @@
+"""Constants and membership tests for ASCII characters"""
+
+NUL     = 0x00  # ^@
+SOH     = 0x01  # ^A
+STX     = 0x02  # ^B
+ETX     = 0x03  # ^C
+EOT     = 0x04  # ^D
+ENQ     = 0x05  # ^E
+ACK     = 0x06  # ^F
+BEL     = 0x07  # ^G
+BS      = 0x08  # ^H
+TAB     = 0x09  # ^I
+HT      = 0x09  # ^I
+LF      = 0x0a  # ^J
+NL      = 0x0a  # ^J
+VT      = 0x0b  # ^K
+FF      = 0x0c  # ^L
+CR      = 0x0d  # ^M
+SO      = 0x0e  # ^N
+SI      = 0x0f  # ^O
+DLE     = 0x10  # ^P
+DC1     = 0x11  # ^Q
+DC2     = 0x12  # ^R
+DC3     = 0x13  # ^S
+DC4     = 0x14  # ^T
+NAK     = 0x15  # ^U
+SYN     = 0x16  # ^V
+ETB     = 0x17  # ^W
+CAN     = 0x18  # ^X
+EM      = 0x19  # ^Y
+SUB     = 0x1a  # ^Z
+ESC     = 0x1b  # ^[
+FS      = 0x1c  # ^\
+GS      = 0x1d  # ^]
+RS      = 0x1e  # ^^
+US      = 0x1f  # ^_
+SP      = 0x20  # space
+DEL     = 0x7f  # delete
+
+controlnames = [
+"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
+"BS",  "HT",  "LF",  "VT",  "FF",  "CR",  "SO",  "SI",
+"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
+"CAN", "EM",  "SUB", "ESC", "FS",  "GS",  "RS",  "US",
+"SP"
+]
+
+def _ctoi(c):
+    if type(c) == type(""):
+        return ord(c)
+    else:
+        return c
+
+def isalnum(c): return isalpha(c) or isdigit(c)
+def isalpha(c): return isupper(c) or islower(c)
+def isascii(c): return 0 <= _ctoi(c) <= 127          # ?
+def isblank(c): return _ctoi(c) in (9, 32)
+def iscntrl(c): return 0 <= _ctoi(c) <= 31 or _ctoi(c) == 127
+def isdigit(c): return 48 <= _ctoi(c) <= 57
+def isgraph(c): return 33 <= _ctoi(c) <= 126
+def islower(c): return 97 <= _ctoi(c) <= 122
+def isprint(c): return 32 <= _ctoi(c) <= 126
+def ispunct(c): return isgraph(c) and not isalnum(c)
+def isspace(c): return _ctoi(c) in (9, 10, 11, 12, 13, 32)
+def isupper(c): return 65 <= _ctoi(c) <= 90
+def isxdigit(c): return isdigit(c) or \
+    (65 <= _ctoi(c) <= 70) or (97 <= _ctoi(c) <= 102)
+def isctrl(c): return 0 <= _ctoi(c) < 32
+def ismeta(c): return _ctoi(c) > 127
+
+def ascii(c):
+    if type(c) == type(""):
+        return chr(_ctoi(c) & 0x7f)
+    else:
+        return _ctoi(c) & 0x7f
+
+def ctrl(c):
+    if type(c) == type(""):
+        return chr(_ctoi(c) & 0x1f)
+    else:
+        return _ctoi(c) & 0x1f
+
+def alt(c):
+    if type(c) == type(""):
+        return chr(_ctoi(c) | 0x80)
+    else:
+        return _ctoi(c) | 0x80
+
+def unctrl(c):
+    bits = _ctoi(c)
+    if bits == 0x7f:
+        rep = "^?"
+    elif isprint(bits & 0x7f):
+        rep = chr(bits & 0x7f)
+    else:
+        rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20)
+    if bits & 0x80:
+        return "!" + rep
+    return rep