/Lib/curses/__init__.py

 1"""curses
 2
 3The main package for curses support for Python.  Normally used by importing
 4the package, and perhaps a particular module inside it.
 5
 6   import curses
 7   from curses import textpad
 8   curses.initwin()
 9   ...
10
11"""
12
13__revision__ = "$Id: __init__.py 61064 2008-02-25 16:29:58Z andrew.kuchling $"
14
15from _curses import *
16from curses.wrapper import wrapper
17import os as _os
18import sys as _sys
19
20# Some constants, most notably the ACS_* ones, are only added to the C
21# _curses module's dictionary after initscr() is called.  (Some
22# versions of SGI's curses don't define values for those constants
23# until initscr() has been called.)  This wrapper function calls the
24# underlying C initscr(), and then copies the constants from the
25# _curses module to the curses package's dictionary.  Don't do 'from
26# curses import *' if you'll be needing the ACS_* constants.
27
28def initscr():
29    import _curses, curses
30    # we call setupterm() here because it raises an error
31    # instead of calling exit() in error cases.
32    setupterm(term=_os.environ.get("TERM", "unknown"),
33              fd=_sys.__stdout__.fileno())
34    stdscr = _curses.initscr()
35    for key, value in _curses.__dict__.items():
36        if key[0:4] == 'ACS_' or key in ('LINES', 'COLS'):
37            setattr(curses, key, value)
38
39    return stdscr
40
41# This is a similar wrapper for start_color(), which adds the COLORS and
42# COLOR_PAIRS variables which are only available after start_color() is
43# called.
44
45def start_color():
46    import _curses, curses
47    retval = _curses.start_color()
48    if hasattr(_curses, 'COLORS'):
49        curses.COLORS = _curses.COLORS
50    if hasattr(_curses, 'COLOR_PAIRS'):
51        curses.COLOR_PAIRS = _curses.COLOR_PAIRS
52    return retval
53
54# Import Python has_key() implementation if _curses doesn't contain has_key()
55
56try:
57    has_key
58except NameError:
59    from has_key import has_key