pysvr.py 文件源码

def run_interpreter(stdin, stdout):
    globals = {}
    try:
        str(sys.ps1)
    except:
        sys.ps1 = ">>> "
    source = ""
    while 1:
        stdout.write(sys.ps1)
        line = stdin.readline()
        if line[:2] == '\377\354':
            line = ""
        if not line and not source:
            break
        if line[-2:] == '\r\n':
            line = line[:-2] + '\n'
        source = source + line
        try:
            code = compile_command(source)
        except SyntaxError, err:
            source = ""
            traceback.print_exception(SyntaxError, err, None, file=stdout)
            continue
        if not code:
            continue
        source = ""
        try:
            run_command(code, stdin, stdout, globals)
        except SystemExit, how:
            if how:
                try:
                    how = str(how)
                except:
                    how = ""
                stdout.write("Exit %s\n" % how)
            break
    stdout.write("\nGoodbye.\n")