_pypy_interact.py 文件源码

def interactive_console(mainmodule=None, quiet=False):
    # set sys.{ps1,ps2} just before invoking the interactive interpreter. This
    # mimics what CPython does in pythonrun.c
    if not hasattr(sys, 'ps1'):
        sys.ps1 = '>>>> '
    if not hasattr(sys, 'ps2'):
        sys.ps2 = '.... '
    #
    if not quiet:
        try:
            from _pypy_irc_topic import some_topic
            text = "%s: ``%s''" % ( irc_header, some_topic())
            while len(text) >= 80:
                i = text[:80].rfind(' ')
                print(text[:i])
                text = text[i+1:]
            print(text)
        except ImportError:
            pass
    #
    try:
        if not os.isatty(sys.stdin.fileno()):
            # Bail out if stdin is not tty-like, as pyrepl wouldn't be happy
            # For example, with:
            # subprocess.Popen(['pypy', '-i'], stdin=subprocess.PIPE)
            raise ImportError
        from pyrepl.simple_interact import check
        if not check():
            raise ImportError
        from pyrepl.simple_interact import run_multiline_interactive_console
    except ImportError:
        run_simple_interactive_console(mainmodule)
    else:
        run_multiline_interactive_console(mainmodule)