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# -*- coding: utf-8 -*-
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# Copyright © 2009-2010 Pierre Raybaut
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# Licensed under the terms of the MIT License
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# (see spyderlib/__init__.py for details)
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"""Shell Interpreter"""
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from subprocess import Popen, PIPE
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from code import InteractiveConsole
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from spyderlib.utils.dochelpers import isdefined
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from spyderlib.utils import encoding
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# Force Python to search modules in the current directory first:
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sys.path.insert(0, '')
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def guess_filename(filename):
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if osp.isfile(filename):
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if not filename.endswith('.py'):
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for path in [os.getcwdu()]+sys.path:
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fname = osp.join(path, filename)
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elif osp.isfile(fname+'.py'):
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elif osp.isfile(fname+'.pyw'):
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class Interpreter(InteractiveConsole, threading.Thread):
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"""Interpreter, executed in a separate thread"""
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def __init__(self, namespace=None, exitfunc=None,
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Output=None, WidgetProxy=None, debug=False):
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namespace: locals send to InteractiveConsole object
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commands: list of commands executed at startup
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InteractiveConsole.__init__(self, namespace)
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threading.Thread.__init__(self)
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self.exit_flag = False
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if exitfunc is not None:
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atexit.register(exitfunc)
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self.namespace = self.locals
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self.namespace['__name__'] = '__main__'
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self.namespace['execfile'] = self.execfile
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self.namespace['runfile'] = self.runfile
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self.namespace['raw_input'] = self.raw_input_replacement
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self.namespace['help'] = self.help_replacement
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# Capture all interactive input/output
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self.initial_stdout = sys.stdout
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self.initial_stderr = sys.stderr
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self.initial_stdin = sys.stdin
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# Create communication pipes
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self.stdin_read = os.fdopen(pr, "r")
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self.stdin_write = os.fdopen(pw, "w", 0)
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self.stdout_write = Output()
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self.stderr_write = Output()
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self.input_condition = threading.Condition()
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self.widget_proxy = WidgetProxy(self.input_condition)
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#------ Standard input/output
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def redirect_stds(self):
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sys.stdout = self.stdout_write
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sys.stderr = self.stderr_write
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sys.stdin = self.stdin_read
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def restore_stds(self):
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sys.stdout = self.initial_stdout
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sys.stderr = self.initial_stderr
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sys.stdin = self.initial_stdin
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def raw_input_replacement(self, prompt=''):
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"""For raw_input builtin function emulation"""
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self.widget_proxy.wait_input(prompt)
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self.input_condition.acquire()
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while not self.widget_proxy.data_available():
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self.input_condition.wait()
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inp = self.widget_proxy.input_data
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self.input_condition.release()
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def help_replacement(self, text=None, interactive=False):
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"""For help builtin function emulation"""
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if text is not None and not interactive:
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return pydoc.help(text)
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pyver = "%d.%d" % (sys.version_info[0], sys.version_info[1])
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Welcome to Python %s! This is the online help utility.
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If this is your first time using Python, you should definitely check out
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the tutorial on the Internet at http://www.python.org/doc/tut/.
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Enter the name of any module, keyword, or topic to get help on writing
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Python programs and using Python modules. To quit this help utility and
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return to the interpreter, just type "quit".
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To get a list of available modules, keywords, or topics, type "modules",
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"keywords", or "topics". Each module also comes with a one-line summary
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of what it does; to list the modules whose summaries contain a given word
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such as "spam", type "modules spam".
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eval("pydoc.help(%s)" % text)
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except (NameError, SyntaxError):
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print "no Python documentation found for '%r'" % text
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self.write(os.linesep)
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self.widget_proxy.new_prompt("help> ")
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inp = self.raw_input_replacement()
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self.help_replacement(inp, interactive=True)
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You are now leaving help and returning to the Python interpreter.
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If you want to ask for help on a particular object directly from the
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interpreter, you can type "help(object)". Executing "help('string')"
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has the same effect as typing a particular string at the help> prompt.
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def run_command(self, cmd, new_prompt=True):
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"""Run command in interpreter"""
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self.exit_flag = True
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# -- Special commands type I
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# (transformed into commands executed in the interpreter)
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special_pattern = r"^%s (?:r\')?(?:u\')?\"?\'?([a-zA-Z0-9_\.]+)"
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run_match = re.match(special_pattern % 'run', cmd)
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help_match = re.match(r'^([a-zA-Z0-9_\.]+)\?$', cmd)
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cd_match = re.match(r"^\!cd \"?\'?([a-zA-Z0-9_ \.]+)", cmd)
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cmd = 'help(%s)' % help_match.group(1)
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filename = guess_filename(run_match.groups()[0])
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cmd = 'runfile(r"%s", args=None)' % filename
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cmd = 'import os; os.chdir(r"%s")' % cd_match.groups()[0].strip()
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# -- End of Special commands type I
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# -- Special commands type II
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# (don't need code execution in interpreter)
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xedit_match = re.match(special_pattern % 'xedit', cmd)
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edit_match = re.match(special_pattern % 'edit', cmd)
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clear_match = re.match(r"^clear ([a-zA-Z0-9_, ]+)", cmd)
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# (external) edit command
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filename = guess_filename(xedit_match.groups()[0])
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self.widget_proxy.edit(filename, external_editor=True)
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filename = guess_filename(edit_match.groups()[0])
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if osp.isfile(filename):
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self.widget_proxy.edit(filename)
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self.stderr_write.write(
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"No such file or directory: %s\n" % filename)
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# remove reference (equivalent to MATLAB's clear command)
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varnames = clear_match.groups()[0].replace(' ', '').split(',')
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for varname in varnames:
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self.namespace.pop(varname)
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elif cmd.startswith('!'):
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pipe = Popen(cmd[1:], shell=True,
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stdin=PIPE, stderr=PIPE, stdout=PIPE)
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txt_out = encoding.transcode( pipe.stdout.read() )
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txt_err = encoding.transcode( pipe.stderr.read().rstrip() )
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self.stderr_write.write(txt_err)
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self.stdout_write.write(txt_out)
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self.stdout_write.write('\n')
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# -- End of Special commands type II
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# Command executed in the interpreter
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# self.widget_proxy.set_readonly(True)
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self.more = self.push(cmd)
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# self.widget_proxy.set_readonly(False)
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self.widget_proxy.new_prompt(self.p2 if self.more else self.p1)
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"""Wait for input and run it"""
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while not self.exit_flag:
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line = self.stdin_read.readline()
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# Remove last character which is always '\n':
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self.run_command(line[:-1])
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def get_thread_id(self):
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"""Return thread id"""
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for thread_id, obj in threading._active.items():
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def raise_keyboard_interrupt(self):
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ctypes.pythonapi.PyThreadState_SetAsyncExc(self.get_thread_id(),
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ctypes.py_object(KeyboardInterrupt))
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"""Actions to be done before restarting this interpreter"""
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def execfile(self, filename):
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source = open(filename, 'r').read()
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name = filename.encode('ascii')
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except UnicodeEncodeError:
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name = '<executed_script>'
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code = compile(source, name, "exec")
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except (OverflowError, SyntaxError):
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InteractiveConsole.showsyntaxerror(self, filename)
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def runfile(self, filename, args=None):
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args: command line arguments (string)
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if args is not None and not isinstance(args, basestring):
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raise TypeError("expected a character buffer object")
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self.namespace['__file__'] = filename
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sys.argv = [filename]
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for arg in args.split():
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self.execfile(filename)
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self.namespace.pop('__file__')
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def eval(self, text):
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Evaluate text and return (obj, valid)
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where *obj* is the object represented by *text*
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and *valid* is True if object evaluation did not raise any exception
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assert isinstance(text, (str, unicode))
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return eval(text, self.locals), True
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def is_defined(self, objtxt, force_import=False):
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"""Return True if object is defined"""
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return isdefined(objtxt, force_import=force_import,
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namespace=self.locals)
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#===========================================================================
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# InteractiveConsole API
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#===========================================================================
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def push(self, line):
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Push a line of source text to the interpreter
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The line should not have a trailing newline; it may have internal
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newlines. The line is appended to a buffer and the interpreter’s
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runsource() method is called with the concatenated contents of the
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buffer as source. If this indicates that the command was executed
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or invalid, the buffer is reset; otherwise, the command is incomplete,
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and the buffer is left as it was after the line was appended.
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The return value is True if more input is required, False if the line
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was dealt with in some way (this is the same as runsource()).
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return InteractiveConsole.push(self, line)
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def resetbuffer(self):
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"""Remove any unhandled source text from the input buffer"""
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InteractiveConsole.resetbuffer(self)
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# -*- coding: utf-8 -*-
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# Copyright © 2009-2010 Pierre Raybaut
4
# Licensed under the terms of the MIT License
5
# (see spyderlib/__init__.py for details)
7
"""Shell Interpreter"""
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from subprocess import Popen, PIPE
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from code import InteractiveConsole
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from spyderlib.utils.dochelpers import isdefined
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from spyderlib.utils import encoding
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# Force Python to search modules in the current directory first:
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sys.path.insert(0, '')
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def guess_filename(filename):
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if osp.isfile(filename):
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if not filename.endswith('.py'):
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for path in [os.getcwdu()]+sys.path:
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fname = osp.join(path, filename)
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elif osp.isfile(fname+'.py'):
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elif osp.isfile(fname+'.pyw'):
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class Interpreter(InteractiveConsole, threading.Thread):
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"""Interpreter, executed in a separate thread"""
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def __init__(self, namespace=None, exitfunc=None,
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Output=None, WidgetProxy=None, debug=False):
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namespace: locals send to InteractiveConsole object
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commands: list of commands executed at startup
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InteractiveConsole.__init__(self, namespace)
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threading.Thread.__init__(self)
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self.exit_flag = False
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if exitfunc is not None:
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atexit.register(exitfunc)
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self.namespace = self.locals
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self.namespace['__name__'] = '__main__'
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self.namespace['execfile'] = self.execfile
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self.namespace['runfile'] = self.runfile
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self.namespace['raw_input'] = self.raw_input_replacement
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self.namespace['help'] = self.help_replacement
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# Capture all interactive input/output
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self.initial_stdout = sys.stdout
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self.initial_stderr = sys.stderr
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self.initial_stdin = sys.stdin
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# Create communication pipes
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self.stdin_read = os.fdopen(pr, "r")
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self.stdin_write = os.fdopen(pw, "w", 0)
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self.stdout_write = Output()
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self.stderr_write = Output()
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self.input_condition = threading.Condition()
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self.widget_proxy = WidgetProxy(self.input_condition)
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#------ Standard input/output
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def redirect_stds(self):
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sys.stdout = self.stdout_write
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sys.stderr = self.stderr_write
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sys.stdin = self.stdin_read
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def restore_stds(self):
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sys.stdout = self.initial_stdout
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sys.stderr = self.initial_stderr
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sys.stdin = self.initial_stdin
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def raw_input_replacement(self, prompt=''):
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"""For raw_input builtin function emulation"""
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self.widget_proxy.wait_input(prompt)
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self.input_condition.acquire()
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while not self.widget_proxy.data_available():
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self.input_condition.wait()
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inp = self.widget_proxy.input_data
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self.input_condition.release()
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def help_replacement(self, text=None, interactive=False):
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"""For help builtin function emulation"""
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if text is not None and not interactive:
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return pydoc.help(text)
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pyver = "%d.%d" % (sys.version_info[0], sys.version_info[1])
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Welcome to Python %s! This is the online help utility.
127
If this is your first time using Python, you should definitely check out
128
the tutorial on the Internet at http://www.python.org/doc/tut/.
130
Enter the name of any module, keyword, or topic to get help on writing
131
Python programs and using Python modules. To quit this help utility and
132
return to the interpreter, just type "quit".
134
To get a list of available modules, keywords, or topics, type "modules",
135
"keywords", or "topics". Each module also comes with a one-line summary
136
of what it does; to list the modules whose summaries contain a given word
137
such as "spam", type "modules spam".
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eval("pydoc.help(%s)" % text)
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except (NameError, SyntaxError):
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print "no Python documentation found for '%r'" % text
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self.write(os.linesep)
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self.widget_proxy.new_prompt("help> ")
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inp = self.raw_input_replacement()
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self.help_replacement(inp, interactive=True)
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You are now leaving help and returning to the Python interpreter.
153
If you want to ask for help on a particular object directly from the
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interpreter, you can type "help(object)". Executing "help('string')"
155
has the same effect as typing a particular string at the help> prompt.
158
def run_command(self, cmd, new_prompt=True):
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"""Run command in interpreter"""
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self.exit_flag = True
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# -- Special commands type I
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# (transformed into commands executed in the interpreter)
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special_pattern = r"^%s (?:r\')?(?:u\')?\"?\'?([a-zA-Z0-9_\.]+)"
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run_match = re.match(special_pattern % 'run', cmd)
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help_match = re.match(r'^([a-zA-Z0-9_\.]+)\?$', cmd)
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cd_match = re.match(r"^\!cd \"?\'?([a-zA-Z0-9_ \.]+)", cmd)
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cmd = 'help(%s)' % help_match.group(1)
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filename = guess_filename(run_match.groups()[0])
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cmd = 'runfile(r"%s", args=None)' % filename
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cmd = 'import os; os.chdir(r"%s")' % cd_match.groups()[0].strip()
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# -- End of Special commands type I
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# -- Special commands type II
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# (don't need code execution in interpreter)
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xedit_match = re.match(special_pattern % 'xedit', cmd)
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edit_match = re.match(special_pattern % 'edit', cmd)
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clear_match = re.match(r"^clear ([a-zA-Z0-9_, ]+)", cmd)
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# (external) edit command
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filename = guess_filename(xedit_match.groups()[0])
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self.widget_proxy.edit(filename, external_editor=True)
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filename = guess_filename(edit_match.groups()[0])
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if osp.isfile(filename):
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self.widget_proxy.edit(filename)
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self.stderr_write.write(
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"No such file or directory: %s\n" % filename)
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# remove reference (equivalent to MATLAB's clear command)
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varnames = clear_match.groups()[0].replace(' ', '').split(',')
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for varname in varnames:
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self.namespace.pop(varname)
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elif cmd.startswith('!'):
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pipe = Popen(cmd[1:], shell=True,
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stdin=PIPE, stderr=PIPE, stdout=PIPE)
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txt_out = encoding.transcode( pipe.stdout.read() )
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txt_err = encoding.transcode( pipe.stderr.read().rstrip() )
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self.stderr_write.write(txt_err)
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self.stdout_write.write(txt_out)
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self.stdout_write.write('\n')
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# -- End of Special commands type II
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# Command executed in the interpreter
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# self.widget_proxy.set_readonly(True)
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self.more = self.push(cmd)
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# self.widget_proxy.set_readonly(False)
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self.widget_proxy.new_prompt(self.p2 if self.more else self.p1)
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"""Wait for input and run it"""
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while not self.exit_flag:
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line = self.stdin_read.readline()
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# Remove last character which is always '\n':
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self.run_command(line[:-1])
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def get_thread_id(self):
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"""Return thread id"""
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for thread_id, obj in threading._active.items():
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def raise_keyboard_interrupt(self):
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ctypes.pythonapi.PyThreadState_SetAsyncExc(self.get_thread_id(),
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ctypes.py_object(KeyboardInterrupt))
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"""Actions to be done before restarting this interpreter"""
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def execfile(self, filename):
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source = open(filename, 'r').read()
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name = filename.encode('ascii')
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except UnicodeEncodeError:
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name = '<executed_script>'
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code = compile(source, name, "exec")
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except (OverflowError, SyntaxError):
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InteractiveConsole.showsyntaxerror(self, filename)
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def runfile(self, filename, args=None):
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args: command line arguments (string)
284
if args is not None and not isinstance(args, basestring):
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raise TypeError("expected a character buffer object")
286
self.namespace['__file__'] = filename
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sys.argv = [filename]
289
for arg in args.split():
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self.execfile(filename)
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self.namespace.pop('__file__')
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def eval(self, text):
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Evaluate text and return (obj, valid)
298
where *obj* is the object represented by *text*
299
and *valid* is True if object evaluation did not raise any exception
301
assert isinstance(text, (str, unicode))
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return eval(text, self.locals), True
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def is_defined(self, objtxt, force_import=False):
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"""Return True if object is defined"""
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return isdefined(objtxt, force_import=force_import,
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namespace=self.locals)
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#===========================================================================
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# InteractiveConsole API
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#===========================================================================
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def push(self, line):
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Push a line of source text to the interpreter
319
The line should not have a trailing newline; it may have internal
320
newlines. The line is appended to a buffer and the interpreter’s
321
runsource() method is called with the concatenated contents of the
322
buffer as source. If this indicates that the command was executed
323
or invalid, the buffer is reset; otherwise, the command is incomplete,
324
and the buffer is left as it was after the line was appended.
325
The return value is True if more input is required, False if the line
326
was dealt with in some way (this is the same as runsource()).
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return InteractiveConsole.push(self, "#coding=utf-8\n" + line)
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def resetbuffer(self):
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"""Remove any unhandled source text from the input buffer"""
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InteractiveConsole.resetbuffer(self)
b'\\ No newline at end of file'
added
removed
spyderlib/interpreter.py
