Python io.stdout方法代码示例

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def show_all(self):
        """Show entire demo on screen, block by block"""

        fname = self.title
        title = self.title
        nblocks = self.nblocks
        silent = self._silent
        marquee = self.marquee
        for index,block in enumerate(self.src_blocks_colored):
            if silent[index]:
                print(marquee('<%s> SILENT block # %s (%s remaining)' %
                              (title,index,nblocks-index-1)), file=io.stdout)
            else:
                print(marquee('<%s> block # %s (%s remaining)' %
                              (title,index,nblocks-index-1)), file=io.stdout)
            print(block, end=' ', file=io.stdout)
        sys.stdout.flush() 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def system_piped(self, cmd):
        """Call the given cmd in a subprocess, piping stdout/err

        Parameters
        ----------
        cmd : str
          Command to execute (can not end in '&', as background processes are
          not supported.  Should not be a command that expects input
          other than simple text.
        """
        if cmd.rstrip().endswith('&'):
            # this is *far* from a rigorous test
            # We do not support backgrounding processes because we either use
            # pexpect or pipes to read from.  Users can always just call
            # os.system() or use ip.system=ip.system_raw
            # if they really want a background process.
            raise OSError("Background processes not supported.")

        # we explicitly do NOT return the subprocess status code, because
        # a non-None value would trigger :func:`sys.displayhook` calls.
        # Instead, we store the exit_code in user_ns.
        self.user_ns['_exit_code'] = system(self.var_expand(cmd, depth=1)) 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def pdef(self, obj, oname=''):
        """Print the call signature for any callable object.

        If the object is a class, print the constructor information."""

        if not callable(obj):
            print('Object is not callable.')
            return

        header = ''

        if inspect.isclass(obj):
            header = self.__head('Class constructor information:\n')
            obj = obj.__init__
        elif (not py3compat.PY3) and type(obj) is types.InstanceType:
            obj = obj.__call__

        output = self._getdef(obj,oname)
        if output is None:
            self.noinfo('definition header',oname)
        else:
            print(header,self.format(output), end=' ', file=io.stdout)

    # In Python 3, all classes are new-style, so they all have __init__. 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def page_dumb(strng, start=0, screen_lines=25):
    """Very dumb 'pager' in Python, for when nothing else works.

    Only moves forward, same interface as page(), except for pager_cmd and
    mode."""

    out_ln  = strng.splitlines()[start:]
    screens = chop(out_ln,screen_lines-1)
    if len(screens) == 1:
        print(os.linesep.join(screens[0]), file=io.stdout)
    else:
        last_escape = ""
        for scr in screens[0:-1]:
            hunk = os.linesep.join(scr)
            print(last_escape + hunk, file=io.stdout)
            if not page_more():
                return
            esc_list = esc_re.findall(hunk)
            if len(esc_list) > 0:
                last_escape = esc_list[-1]
        print(last_escape + os.linesep.join(screens[-1]), file=io.stdout) 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None):
        # Whether to call the interactive pdb debugger after printing
        # tracebacks or not
        self.call_pdb = call_pdb

        # Output stream to write to.  Note that we store the original value in
        # a private attribute and then make the public ostream a property, so
        # that we can delay accessing io.stdout until runtime.  The way
        # things are written now, the io.stdout object is dynamically managed
        # so a reference to it should NEVER be stored statically.  This
        # property approach confines this detail to a single location, and all
        # subclasses can simply access self.ostream for writing.
        self._ostream = ostream

        # Create color table
        self.color_scheme_table = exception_colors()

        self.set_colors(color_scheme)
        self.old_scheme = color_scheme  # save initial value for toggles

        if call_pdb:
            self.pdb = debugger.Pdb(self.color_scheme_table.active_scheme_name)
        else:
            self.pdb = None 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def process_input_line(self, line, store_history=True):
        """process the input, capturing stdout"""

        stdout = sys.stdout
        splitter = self.IP.input_splitter
        try:
            sys.stdout = self.cout
            splitter.push(line)
            more = splitter.push_accepts_more()
            if not more:
                try:
                    source_raw = splitter.source_raw_reset()[1]
                except:
                    # recent ipython #4504
                    source_raw = splitter.raw_reset()
                self.IP.run_cell(source_raw, store_history=store_history)
        finally:
            sys.stdout = stdout 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def process_input_line(self, line, store_history=True):
        """process the input, capturing stdout"""
        #print "input='%s'"%self.input
        stdout = sys.stdout
        splitter = self.IP.input_splitter
        try:
            sys.stdout = self.cout
            splitter.push(line)
            more = splitter.push_accepts_more()
            if not more:
                source_raw = splitter.source_raw_reset()[1]
                self.IP.run_cell(source_raw, store_history=store_history)
        finally:
            sys.stdout = stdout 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def _get_index(self,index):
        """Get the current block index, validating and checking status.

        Returns None if the demo is finished"""

        if index is None:
            if self.finished:
                print('Demo finished.  Use <demo_name>.reset() if you want to rerun it.', file=io.stdout)
                return None
            index = self.block_index
        else:
            self._validate_index(index)
        return index 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def handle_image_stream(self, data, mime):
        raw = base64.decodestring(data[mime].encode('ascii'))
        imageformat = self._imagemime[mime]
        fmt = dict(format=imageformat)
        args = [s.format(**fmt) for s in self.stream_image_handler]
        with open(os.devnull, 'w') as devnull:
            proc = subprocess.Popen(
                args, stdin=subprocess.PIPE,
                stdout=devnull, stderr=devnull)
            proc.communicate(raw) 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def handle_image_tempfile(self, data, mime):
        raw = base64.decodestring(data[mime].encode('ascii'))
        imageformat = self._imagemime[mime]
        filename = 'tmp.{0}'.format(imageformat)
        with nested(NamedFileInTemporaryDirectory(filename),
                    open(os.devnull, 'w')) as (f, devnull):
            f.write(raw)
            f.flush()
            fmt = dict(file=f.name, format=imageformat)
            args = [s.format(**fmt) for s in self.tempfile_image_handler]
            subprocess.call(args, stdout=devnull, stderr=devnull) 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def get_ipython():
    # This will get replaced by the real thing once we start IPython below
    return start_ipython()


# A couple of methods to override those in the running IPython to interact
# better with doctest (doctest captures on raw stdout, so we need to direct
# various types of output there otherwise it will miss them). 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def xsys(self, cmd):
    """Replace the default system call with a capturing one for doctest.
    """
    # We use getoutput, but we need to strip it because pexpect captures
    # the trailing newline differently from commands.getoutput
    print(self.getoutput(cmd, split=False, depth=1).rstrip(), end='', file=sys.stdout)
    sys.stdout.flush() 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def _showtraceback(self, etype, evalue, stb):
    """Print the traceback purely on stdout for doctest to capture it.
    """
    print(self.InteractiveTB.stb2text(stb), file=sys.stdout) 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def clear_output(stdout=True, stderr=True, other=True):
    """Clear the output of the current cell receiving output.

    Optionally, each of stdout/stderr or other non-stream data (e.g. anything
    produced by display()) can be excluded from the clear event.

    By default, everything is cleared.

    Parameters
    ----------
    stdout : bool [default: True]
        Whether to clear stdout.
    stderr : bool [default: True]
        Whether to clear stderr.
    other : bool [default: True]
        Whether to clear everything else that is not stdout/stderr
        (e.g. figures,images,HTML, any result of display()).
    """
    from IPython.core.interactiveshell import InteractiveShell
    if InteractiveShell.initialized():
        InteractiveShell.instance().display_pub.clear_output(
            stdout=stdout, stderr=stderr, other=other,
        )
    else:
        from IPython.utils import io
        if stdout:
            print('\033[2K\r', file=io.stdout, end='')
            io.stdout.flush()
        if stderr:
            print('\033[2K\r', file=io.stderr, end='')
            io.stderr.flush() 

# 需要导入模块: from IPython.utils import io [as 别名]
# 或者: from IPython.utils.io import stdout [as 别名]
def write_output_prompt(self):
        """Write the output prompt.

        The default implementation simply writes the prompt to
        ``io.stdout``.
        """
        # Use write, not print which adds an extra space.
        io.stdout.write(self.shell.separate_out)
        outprompt = self.shell.prompt_manager.render('out')
        if self.do_full_cache:
            io.stdout.write(outprompt)