python console 启动'PyDevTerminalInteractiveShell' object has no attribute 'has_readline'
问题原因
大于2016.1版本的 pycharm 与ipython version 5冲突。
解决办法
新建文件名： pydev_ipython_console_011.py，内容如下：
# TODO that would make IPython integration better
# - show output other times then when enter was pressed
# - support proper exit to allow IPython to cleanup (e.g. temp files created with %edit)
# - support Ctrl-D (Ctrl-Z on Windows)
# - use IPython (numbered) prompts in PyDev
# - better integration of IPython and PyDev completions
# - some of the semantics on handling the code completion are not correct:
# eg: Start a line with % and then type c should give %cd as a completion by it doesn't
# however type %c and request completions and %cd is given as an option
# eg: Completing a magic when user typed it without the leading % causes the % to be inserted
# to the left of what should be the first colon.
"""Interface to TerminalInteractiveShell for PyDev Interactive Console frontend
for IPython 0.11 to 1.0+.
"""
from __future__ import print_function
import os
import codeop
from IPython.core.error import UsageError
from IPython.core.completer import IPCompleter
from IPython.core.interactiveshell import InteractiveShell, InteractiveShellABC
from IPython.core.usage import default_banner_parts
from IPython.utils.strdispatch import StrDispatch
import IPython.core.release as IPythonRelease
try:
from IPython.terminal.interactiveshell import TerminalInteractiveShell
except ImportError:
# Versions of IPython [0.11,1.0) had an extra hierarchy level
from IPython.frontend.terminal.interactiveshell import TerminalInteractiveShell
try:
from traitlets import CBool, Unicode
except ImportError:
from IPython.utils.traitlets import CBool, Unicode
from IPython.core import release
from _pydev_bundle.pydev_imports import xmlrpclib
default_pydev_banner_parts = default_banner_parts
default_pydev_banner = ''.join(default_pydev_banner_parts)
def show_in_pager(self, strng, *args, **kwargs):
""" Run a string through pager """
# On PyDev we just output the string, there are scroll bars in the console
# to handle "paging". This is the same behaviour as when TERM==dump (see
# page.py)
print(strng)
def create_editor_hook(pydev_host, pydev_client_port):
def call_editor(filename, line=0, wait=True):
""" Open an editor in PyDev """
if line is None:
line = 0
# Make sure to send an absolution path because unlike most editor hooks
# we don't launch a process. This is more like what happens in the zmqshell
filename = os.path.abspath(filename)
# import sys
# sys.__stderr__.write('Calling editor at: %s:%s\n' % (pydev_host, pydev_client_port))
# Tell PyDev to open the editor
server = xmlrpclib.Server('http://%s:%s' % (pydev_host, pydev_client_port))
server.IPythonEditor(filename, str(line))
if wait:
try:
raw_input("Press Enter when done editing:")
except NameError:
input("Press Enter when done editing:")
return call_editor
class PyDevIPCompleter(IPCompleter):
def __init__(self, *args, **kwargs):
""" Create a Completer that reuses the advanced completion support of PyDev
in addition to the completion support provided by IPython """
IPCompleter.__init__(self, *args, **kwargs)
# Use PyDev for python matches, see getCompletions below
self.matchers.remove(self.python_matches)
class PyDevTerminalInteractiveShell(TerminalInteractiveShell):
banner1 = Unicode(default_pydev_banner, config=True,
help="""The part of the banner to be printed before the profile"""
)
# TODO term_title: (can PyDev's title be changed???, see terminal.py for where to inject code, in particular set_term_title as used by %cd)
# for now, just disable term_title
term_title = CBool(False)
# Note in version 0.11 there is no guard in the IPython code about displaying a
# warning, so with 0.11 you get:
# WARNING: Readline services not available or not loaded.
# WARNING: The auto-indent feature requires the readline library
# Disable readline, readline type code is all handled by PyDev (on Java side)
readline_use = CBool(False)
# autoindent has no meaning in PyDev (PyDev always handles that on the Java side),
# and attempting to enable it will print a warning in the absence of readline.
autoindent = CBool(False)
# Force console to not give warning about color scheme choice and default to NoColor.
# TODO It would be nice to enable colors in PyDev but:
# - The PyDev Console (Eclipse Console) does not support the full range of colors, so the
# effect isn't as nice anyway at the command line
# - If done, the color scheme should default to LightBG, but actually be dependent on
# any settings the user has (such as if a dark theme is in use, then Linux is probably
# a better theme).
colors_force = CBool(True)
colors = Unicode("NoColor")
# In the PyDev Console, GUI control is done via hookable XML-RPC server
@staticmethod
def enable_gui(gui=None, app=None):
"""Switch amongst GUI input hooks by name.
"""
# Deferred import
from pydev_ipython.inputhook import enable_gui as real_enable_gui
try:
return real_enable_gui(gui, app)
except ValueError as e:
raise UsageError("%s" % e)
#-------------------------------------------------------------------------
# Things related to hooks
#-------------------------------------------------------------------------
def init_hooks(self):
super(PyDevTerminalInteractiveShell, self).init_hooks()
self.set_hook('show_in_pager', show_in_pager)
#-------------------------------------------------------------------------
# Things related to exceptions
#-------------------------------------------------------------------------
def showtraceback(self, exc_tuple=None, filename=None, tb_offset=None,
exception_only=False):
# IPython does a lot of clever stuff with Exceptions. However mostly
# it is related to IPython running in a terminal instead of an IDE.
# (e.g. it prints out snippets of code around the stack trace)
# PyDev does a lot of clever stuff too, so leave exception handling
# with default print_exc that PyDev can parse and do its clever stuff
# with (e.g. it puts links back to the original source code)
import traceback;traceback.print_exc()
#-------------------------------------------------------------------------
# Things related to text completion
#-------------------------------------------------------------------------
# The way to construct an IPCompleter changed in most versions,
# so we have a custom, per version implementation of the construction
def _new_completer_011(self):
return PyDevIPCompleter(self,
self.user_ns,
self.user_global_ns,
self.readline_omit__names,
self.alias_manager.alias_table,
self.has_readline)
def _new_completer_012(self):
completer = PyDevIPCompleter(shell=self,
namespace=self.user_ns,
global_namespace=self.user_global_ns,
alias_table=self.alias_manager.alias_table,
use_readline=self.has_readline,
config=self.config,
)
return completer
def _new_completer_100(self):
completer = PyDevIPCompleter(shell=self,
namespace=self.user_ns,
global_namespace=self.user_global_ns,
alias_table=self.alias_manager.alias_table,
use_readline=self.has_readline,
parent=self,
)
return completer
def _new_completer_234(self):
# correct for IPython versions 2.x, 3.x, 4.x
completer = PyDevIPCompleter(shell=self,
namespace=self.user_ns,
global_namespace=self.user_global_ns,
use_readline=self.has_readline,
parent=self,
)
return completer
def _new_completer_500(self):
completer = PyDevIPCompleter(shell=self,
namespace=self.user_ns,
global_namespace=self.user_global_ns,
use_readline=False,
parent=self
)
return completer
def add_completer_hooks(self):
from IPython.core.completerlib import module_completer, magic_run_completer, cd_completer
try:
from IPython.core.completerlib import reset_completer
except ImportError:
# reset_completer was added for rel-0.13
reset_completer = None
self.configurables.append(self.Completer)
# Add custom completers to the basic ones built into IPCompleter
sdisp = self.strdispatchers.get('complete_command', StrDispatch())
self.strdispatchers['complete_command'] = sdisp
self.Completer.custom_completers = sdisp
self.set_hook('complete_command', module_completer, str_key = 'import')
self.set_hook('complete_command', module_completer, str_key = 'from')
self.set_hook('complete_command', magic_run_completer, str_key = '%run')
self.set_hook('complete_command', cd_completer, str_key = '%cd')
if reset_completer:
self.set_hook('complete_command', reset_completer, str_key = '%reset')
def init_completer(self):
"""Initialize the completion machinery.
This creates a completer that provides the completions that are
IPython specific. We use this to supplement PyDev's core code
completions.
"""
# PyDev uses its own completer and custom hooks so that it uses
# most completions from PyDev's core completer which provides
# extra information.
# See getCompletions for where the two sets of results are merged
if IPythonRelease._version_major >= 5:
self.Completer = self._new_completer_500()
elif IPythonRelease._version_major >= 2:
self.Completer = self._new_completer_234()
elif IPythonRelease._version_major >= 1:
self.Completer = self._new_completer_100()
elif IPythonRelease._version_minor >= 12:
self.Completer = self._new_completer_012()
else:
self.Completer = self._new_completer_011()
self.add_completer_hooks()
if IPythonRelease._version_major <= 3:
# Only configure readline if we truly are using readline. IPython can
# do tab-completion over the network, in GUIs, etc, where readline
# itself may be absent
if self.has_readline:
self.set_readline_completer()
#-------------------------------------------------------------------------
# Things related to aliases
#-------------------------------------------------------------------------
def init_alias(self):
# InteractiveShell defines alias's we want, but TerminalInteractiveShell defines
# ones we don't. So don't use super and instead go right to InteractiveShell
InteractiveShell.init_alias(self)
#-------------------------------------------------------------------------
# Things related to exiting
#-------------------------------------------------------------------------
def ask_exit(self):
""" Ask the shell to exit. Can be overiden and used as a callback. """
# TODO PyDev's console does not have support from the Python side to exit
# the console. If user forces the exit (with sys.exit()) then the console
# simply reports errors. e.g.:
# >>> import sys
# >>> sys.exit()
# Failed to create input stream: Connection refused
# >>>
# Console already exited with value: 0 while waiting for an answer.
# Error stream:
# Output stream:
# >>>
#
# Alternatively if you use the non-IPython shell this is what happens
# >>> exit()
# :None
# >>>
# :None
# >>>
#
super(PyDevTerminalInteractiveShell, self).ask_exit()
print('To exit the PyDev Console, terminate the console within IDE.')
#-------------------------------------------------------------------------
# Things related to magics
#-------------------------------------------------------------------------
def init_magics(self):
super(PyDevTerminalInteractiveShell, self).init_magics()
# TODO Any additional magics for PyDev?
InteractiveShellABC.register(PyDevTerminalInteractiveShell) # @UndefinedVariable
#=======================================================================================================================
# _PyDevFrontEnd
#=======================================================================================================================
class _PyDevFrontEnd:
version = release.__version__
def __init__(self, show_banner=True):
# Create and initialize our IPython instance.
self.ipython = PyDevTerminalInteractiveShell.instance()
if show_banner:
# Display the IPython banner, this has version info and
# help info
self.ipython.show_banner()
self._curr_exec_line = 0
self._curr_exec_lines = []
def update(self, globals, locals):
ns = self.ipython.user_ns
for ind in ['_oh', '_ih', '_dh', '_sh', 'In', 'Out', 'get_ipython', 'exit', 'quit']:
locals[ind] = ns[ind]
self.ipython.user_global_ns.clear()
self.ipython.user_global_ns.update(globals)
self.ipython.user_ns = locals
if hasattr(self.ipython, 'history_manager') and hasattr(self.ipython.history_manager, 'save_thread'):
self.ipython.history_manager.save_thread.pydev_do_not_trace = True #don't trace ipython history saving thread
def complete(self, string):
try:
if string:
return self.ipython.complete(None, line=string, cursor_pos=string.__len__())
else:
return self.ipython.complete(string, string, 0)
except:
# Silence completer exceptions
pass
def is_complete(self, string):
#Based on IPython 0.10.1
if string in ('', '\n'):
# Prefiltering, eg through ipython0, may return an empty
# string although some operations have been accomplished. We
# thus want to consider an empty string as a complete
# statement.
return True
else:
try:
# Add line returns here, to make sure that the statement is
# complete (except if '\' was used).
# This should probably be done in a different place (like
# maybe 'prefilter_input' method? For now, this works.
clean_string = string.rstrip('\n')
if not clean_string.endswith('\\'):
clean_string += '\n\n'
is_complete = codeop.compile_command(
clean_string,
"" ,
"exec"
)
except Exception:
# XXX: Hack: return True so that the
# code gets executed and the error captured.
is_complete = True
return is_complete
def getCompletions(self, text, act_tok):
# Get completions from IPython and from PyDev and merge the results
# IPython only gives context free list of completions, while PyDev
# gives detailed information about completions.
try:
TYPE_IPYTHON = '11'
TYPE_IPYTHON_MAGIC = '12'
_line, ipython_completions = self.complete(text)
from _pydev_bundle._pydev_completer import Completer
completer = Completer(self.get_namespace(), None)
ret = completer.complete(act_tok)
append = ret.append
ip = self.ipython
pydev_completions = set([f[0] for f in ret])
for ipython_completion in ipython_completions:
#PyCharm was not expecting completions with '%'...
#Could be fixed in the backend, but it's probably better
#fixing it at PyCharm.
#if ipython_completion.startswith('%'):
# ipython_completion = ipython_completion[1:]
if ipython_completion not in pydev_completions:
pydev_completions.add(ipython_completion)
inf = ip.object_inspect(ipython_completion)
if inf['type_name'] == 'Magic function':
pydev_type = TYPE_IPYTHON_MAGIC
else:
pydev_type = TYPE_IPYTHON
pydev_doc = inf['docstring']
if pydev_doc is None:
pydev_doc = ''
append((ipython_completion, pydev_doc, '', pydev_type))
return ret
except:
import traceback;traceback.print_exc()
return []
def get_namespace(self):
return self.ipython.user_ns
def clear_buffer(self):
del self._curr_exec_lines[:]
def add_exec(self, line):
if self._curr_exec_lines:
self._curr_exec_lines.append(line)
buf = '\n'.join(self._curr_exec_lines)
if self.is_complete(buf):
self._curr_exec_line += 1
self.ipython.run_cell(buf)
del self._curr_exec_lines[:]
return False #execute complete (no more)
return True #needs more
else:
if not self.is_complete(line):
#Did not execute
self._curr_exec_lines.append(line)
return True #needs more
else:
self._curr_exec_line += 1
self.ipython.run_cell(line, store_history=True)
#hist = self.ipython.history_manager.output_hist_reprs
#rep = hist.get(self._curr_exec_line, None)
#if rep is not None:
# print(rep)
return False #execute complete (no more)
def is_automagic(self):
return self.ipython.automagic
def get_greeting_msg(self):
return 'PyDev console: using IPython %s\n' % self.version
# If we have succeeded in importing this module, then monkey patch inputhook
# in IPython to redirect to PyDev's version. This is essential to make
# %gui in 0.11 work (0.12+ fixes it by calling self.enable_gui, which is implemented
# above, instead of inputhook.enable_gui).
# See test_gui (test_pydev_ipython_011.TestRunningCode) which fails on 0.11 without
# this patch
import IPython.lib.inputhook
import pydev_ipython.inputhook
IPython.lib.inputhook.enable_gui = pydev_ipython.inputhook.enable_gui
# In addition to enable_gui, make all publics in pydev_ipython.inputhook replace
# the IPython versions. This enables the examples in IPython's examples/lib/gui-*
# to operate properly because those examples don't use %gui magic and instead
# rely on using the inputhooks directly.
for name in pydev_ipython.inputhook.__all__:
setattr(IPython.lib.inputhook, name, getattr(pydev_ipython.inputhook, name))
class _PyDevFrontEndContainer:
_instance = None
_last_host_port = None
def get_pydev_frontend(pydev_host, pydev_client_port, show_banner=True):
if _PyDevFrontEndContainer._instance is None:
_PyDevFrontEndContainer._instance = _PyDevFrontEnd(show_banner=show_banner)
if _PyDevFrontEndContainer._last_host_port != (pydev_host, pydev_client_port):
_PyDevFrontEndContainer._last_host_port = pydev_host, pydev_client_port
# Back channel to PyDev to open editors (in the future other
# info may go back this way. This is the same channel that is
# used to get stdin, see StdIn in pydev_console_utils)
_PyDevFrontEndContainer._instance.ipython.hooks['editor'] = create_editor_hook(pydev_host, pydev_client_port)
# Note: setting the callback directly because setting it with set_hook would actually create a chain instead
# of ovewriting at each new call).
# _PyDevFrontEndContainer._instance.ipython.set_hook('editor', create_editor_hook(pydev_host, pydev_client_port))
return _PyDevFrontEndContainer._instance
将该文件放到 pycharm的安装目录 pycharm\PyCharm Community Edition 5.0.2\helpers\pydev