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� � YZ d d d d � Z e d k r� e � n d S( s? Utilities needed to emulate Python's interactive interpreter.
i����N( t CommandCompilert compile_commandt InteractiveInterpretert InteractiveConsolet interactR c C sR d } y
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c B sP e Z d Z d d � Z d d d � Z d � Z d d � Z d � Z d � Z RS(
s� Base class for InteractiveConsole.
This class deals with parsing and interpreter state (the user's
namespace); it doesn't deal with input buffering or prompting or
input file naming (the filename is always passed in explicitly).
c C s< | d k r# i d d 6d d 6} n | | _ t � | _ d S( s Constructor.
The optional 'locals' argument specifies the dictionary in
which code will be executed; it defaults to a newly created
dictionary with key "__name__" set to "__console__" and key
"__doc__" set to None.
t __console__t __name__t __doc__N( t Nonet localsR t compile( t selfR ( ( s /usr/lib/python2.7/code.pyt __init__% s s <input>t singlec C se y | j | | | � } Wn( t t t f k
rC | j | � t SX| d k rT t S| j | � t S( s� Compile and run some source in the interpreter.
Arguments are as for compile_command().
One several things can happen:
1) The input is incorrect; compile_command() raised an
exception (SyntaxError or OverflowError). A syntax traceback
will be printed by calling the showsyntaxerror() method.
2) The input is incomplete, and more input is required;
compile_command() returned None. Nothing happens.
3) The input is complete; compile_command() returned a code
object. The code is executed by calling self.runcode() (which
also handles run-time exceptions, except for SystemExit).
The return value is True in case 2, False in the other cases (unless
an exception is raised). The return value can be used to
decide whether to use sys.ps1 or sys.ps2 to prompt the next
line.
N( R t
OverflowErrort SyntaxErrort
ValueErrort showsyntaxerrort FalseR t Truet runcode( R t sourcet filenamet symbolt code( ( s /usr/lib/python2.7/code.pyt runsource3 s
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r% � n' | j � n Xe e j d � rL Hn d S( s� Execute a code object.
When an exception occurs, self.showtraceback() is called to
display a traceback. All exceptions are caught except
SystemExit, which is reraised.
A note about KeyboardInterrupt: this exception may occur
elsewhere in this code, and may not always be caught. The
caller should be prepared to deal with it.
i N( R t
SystemExitt
showtracebackR t syst stdout( R R ( ( s /usr/lib/python2.7/code.pyR Z s
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C s� t j � \ } } t _ | t _ | t _ | r� | t k r� y | \ } \ } } } } Wn q� Xt | | | | | f � } | t _ n t j | | � } t | j | � d S( sp Display the syntax error that just occurred.
This doesn't display a stack trace because there isn't one.
If a filename is given, it is stuffed in the exception instead
of what was there before (because Python's parser always uses
"<string>" when reading from a string).
The output is written by self.write(), below.
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last_valueR t tracebackt format_exception_onlyt mapt write(
R R t typet valuet msgt dummy_filenamet linenot offsett linet list( ( s /usr/lib/python2.7/code.pyR p s c C s� z� t j � \ } } } | t _ | t _ | t _ t j | � } | d 4t j | � } | rq | j d d � n t j | | � | t
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| � d S( s� Display the exception that just occurred.
We remove the first stack item because it is our own code.
The output is written by self.write(), below.
i i s# Traceback (most recent call last):
N( R" R$ R& R' R% R( t
extract_tbt format_listt insertR) t lenR R* R+ ( R R, R- t tbt tblistR3 ( ( s /usr/lib/python2.7/code.pyR! � s c C s t j j | � d S( s� Write a string.
The base implementation writes to sys.stderr; a subclass may
replace this with a different implementation.
N( R" t stderrR+ ( R t data( ( s /usr/lib/python2.7/code.pyR+ � s N(
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__module__R
R R R R R R! R+ ( ( ( s /usr/lib/python2.7/code.pyR s ' c B sG e Z d Z d d d � Z d � Z d d � Z d � Z d d � Z RS( s� Closely emulate the behavior of the interactive Python interpreter.
This class builds on InteractiveInterpreter and adds prompting
using the familiar sys.ps1 and sys.ps2, and input buffering.
s <console>c C s' t j | | � | | _ | j � d S( s� Constructor.
The optional locals argument will be passed to the
InteractiveInterpreter base class.
The optional filename argument should specify the (file)name
of the input stream; it will show up in tracebacks.
N( R R R t resetbuffer( R R R ( ( s /usr/lib/python2.7/code.pyR � s
c C s
g | _ d S( s Reset the input buffer.N( t buffer( R ( ( s /usr/lib/python2.7/code.pyR= � s c C s� y t j Wn t k
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S( s� Closely emulate the interactive Python console.
The optional banner argument specify the banner to print
before the first interaction; by default it prints a banner
similar to the one printed by the real Python interpreter,
followed by the current class name in parentheses (so as not
to confuse this with the real interpreter -- since it's so
close!).
s >>> s ... sF Type "help", "copyright", "credits" or "license" for more information.s Python %s on %s
%s
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s %s
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KeyboardInterrupt
N( R" t ps1R t ps2R R+ t versiont platformt __class__R t strt raw_inputt getattrt stdint
isinstancet unicodet decodet EOFErrort pusht KeyboardInterruptR= ( R t bannert cprtt moret promptR2 R? ( ( s /usr/lib/python2.7/code.pyR � sB
c C sN | j j | � d j | j � } | j | | j � } | sJ | j � n | S( s Push a line to the interpreter.
The line should not have a trailing newline; it may have
internal newlines. The line is appended to a buffer and the
interpreter's runsource() method is called with the
concatenated contents of the buffer as source. If this
indicates that the command was executed or invalid, the buffer
is reset; otherwise, the command is incomplete, and the buffer
is left as it was after the line was appended. The return
value is 1 if more input is required, 0 if the line was dealt
with in some way (this is the same as runsource()).
s
( R> t appendt joinR R R= ( R R2 R RQ ( ( s /usr/lib/python2.7/code.pyRM � s
t c C s
t | � S( sH Write a prompt and read a line.
The returned line does not include the trailing newline.
When the user enters the EOF key sequence, EOFError is raised.
The base implementation uses the built-in function
raw_input(); a subclass may replace this with a different
implementation.
( RF ( R RR ( ( s /usr/lib/python2.7/code.pyRF s N( R R< R
R R R= R RM RF ( ( ( s /usr/lib/python2.7/code.pyR � s 1 c C sY t | � } | d k r$ | | _ n$ y d d l } Wn t k
rG n X| j | � d S( s� Closely emulate the interactive Python interpreter.
This is a backwards compatible interface to the InteractiveConsole
class. When readfunc is not specified, it attempts to import the
readline module to enable GNU readline if it is available.
Arguments (all optional, all default to None):
banner -- passed to InteractiveConsole.interact()
readfunc -- if not None, replaces InteractiveConsole.raw_input()
local -- passed to InteractiveInterpreter.__init__()
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