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f d YZ e i e i e i e i e i e i e i e i e i e i e i e i e i e i! e i" g Z# h e i$ d <e i% d <e i& d <e i' d <e i( d <e i) d <e i* d <Z+ e i, e i- e i. e i/ e i0 e i1 e i2 e i e i3 e i4 e i5 e i6 e i7 e i8 e i9 e i: e i; e i< e i= e i> e i? e i@ e iA e iB e i e i e i e i e i e i e iC e i e i e i e i e i e i e i! e i" e iD g( ZE eF e d o eE iG e iH n e i e i e i e i e i e i e i e i e i e i e i! g ZI d kJ ZJ h ZK x' e iL iM D] \ ZN ZO eO eK eN <qWx' e iP iM D] \ ZN ZO eO eK eN <qWd ZQ d S( s Parse tree transformation module.
Transforms Python source code into an abstract syntax tree (AST)
defined in the ast module.
The simplest ways to invoke this module are via parse and parseFile.
parse(buf) -> AST
parseFile(path) -> AST
( t *Nt WalkerErrorc B s t Z RS( N( t __name__t
__module__( ( ( t, /usr/lib64/python2.4/compiler/transformer.pyR " s ( s
CO_VARARGSs CO_VARKEYWORDS( s OP_ASSIGNs OP_DELETEs OP_APPLYc C s3 t | d } | i d } | i t | S( Nt Us
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o! t | Gt | G| GH qw Xn t d t | d S( Ni i s$ Can't find appropriate Node type: %s( t argst kindR t has_keyt TypeErrort lenR t str( R% R& ( ( R t NodeS s
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Z d Z d Z d Z e Z e Z e Z d Z d Z d Z d Z d Z d Z d Z d Z d Z d Z d Z d Z! d Z" d Z# d Z$ d Z% d! Z& d" Z' d# Z( d$ Z) d% Z* d& Z+ d' Z, d( Z- d) Z. d* Z/ d+ Z0 d, Z1 d- Z2 d. Z3 d/ Z4 e4 Z5 e4 Z6 e4 Z7 d0 Z8 d1 Z9 d2 Z: d3 Z; d4 Z< d5 Z= d6 Z> d7 Z? d8 Z@ d9 ZA d: ZB d; ZC d< ZD d= ZE d> ZF d? ZG d@ ZH dA ZI dB ZJ dC ZK dD ZL dE ZM dF ZN h ZO dG ZP dH ZQ dI ZR dJ ZS dK ZT dL ZU dM ZV dN ZW dO ZX dP ZY dQ ZZ dR Z[ dS Z\ dT Z] dU Z^ dV Z_ dW Z` dX Za dY Zb dZ Zc d[ Zd d\ Ze d] Zf d^ Zg eh ei d_ o d` Zj da Zk db Zl n
dc Zj eh ei dd o de Zm df Zn n dg Zo dh Zp di Zq dj Zr dk Zs dl Zt dm Zu dn Zv do Zw ex dp Zy RS(q s Utility object for transforming Python parse trees.
Exposes the following methods:
tree = transform(ast_tree)
tree = parsesuite(text)
tree = parseexpr(text)
tree = parsefile(fileob | filename)
c C s h | _ xG t i i D]6 \ } } t | | o t | | | i | <q q W| i | i t
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t | t p t i | d d } n | i | S( s, Transform an AST into a modified parse tree.t line_infoi N( R t treeR t listt parsert ast2tupleR, t compile_node( R, RI ( ( R t transformy s c C s | i t i | S( s6 Return a modified parse tree for the given suite text.N( R, RN RK t suitet text( R, RP ( ( R R s c C s | i t i | S( s; Return a modified parse tree for the given expression text.N( R, RN RK t exprRP ( R, RP ( ( R R s c C s< t | t d j o t | } n | i | i S( s@ Return a modified parse tree for the contents of the given file.t N( R t fileR R, R R ( R, RS ( ( R t parsefile s c C s0 | d } | t i j o% | d | _ | d } | d } n | t i j o | i | d Sn | t i j o | i | d Sn | t i j o | i | d Sn | t i j o | i | d Sn | t i
j o | i
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c C sN | i | d d } t | d j o | i | | d } n | } | S( Ni i ( R, Rm Ra t funcnameR) t com_call_functionRQ ( R, Ra RQ Rn ( ( R t decorator s c C s; g } x( | D] } | i | i | d q
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c C s | d d t i j o$ | i | d d \ } } } n f } } d } | i | d } t
| | | | d | d d S( Ni i i iR$ ( Ra R. Rt R, Ru Rv Rw Rx Rj Ry t Lambda( R, Ra Ry Rx Rv Rw ( ( R R[
s $
c C s | d d } | i | d } | d d t i j o
g } n | i | d } | i | d } | d j o | i d =n t
| | | | d | d d S( Ni ii i i R$ ( Ra R2 R, R` Rb R5 t COLONt basest com_basesRj Ry R R t Class( R, Ra Ry R2 Rb R} ( ( R R] s
c C s | i | d S( Ni ( R, R^ Ra ( R, Ra ( ( R t stmt. s c C sG g } x4 t d t | d D] } | i | | | q Wt | S( Ni i ( Rd t rangeR) Ra Rc R, Rf Rh ( R, Ra Rd Rc ( ( R t simple_stmt5 s
c C s
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t d S( N( R ( R, Ra ( ( R Rt ? s c C s
t d S( N( R ( R, Ra ( ( R t fpdefB s c C s
t d S( N( R ( R, Ra ( ( R t fplistE s c C s
t d S( N( R ( R, Ra ( ( R t dotted_nameH s c C s
t d S( N( R ( R, Ra ( ( R t comp_opK s c C s
t d S( N( R ( R, Ra ( ( R t trailerN s c C s
t d S( N( R ( R, Ra ( ( R t sliceopQ s c C s
t d S( N( R ( R, Ra ( ( R t argumentT s c C s | d } | i | | d } t | d j o t | d | i Sn | d d t i j oi g } xA t d t | d d D]# } | i
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com_assignt OP_ASSIGNt Assignt
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j o t | | d | d d Sn t | | d | d d S( Ni i i i iR$ ( R0 R) Ra t startR t destR5 t
RIGHTSHIFTR, Rj R Rc R t COMMAt Printt Printnl( R, Ra Rc R R0 R ( ( R t
print_stmtm s
c C s | i | d t S( Ni ( R, R Ra t OP_DELETE( R, Ra ( ( R t del_stmt s c C s t d | d d S( NR$ i i ( R_ Ra ( R, Ra ( ( R t pass_stmt s c C s t d | d d S( NR$ i i ( t BreakRa ( R, Ra ( ( R t
break_stmt s c C s t d | d d S( NR$ i i ( t ContinueRa ( R, Ra ( ( R t
continue_stmt s c C sZ t | d j o" t t d d | d d Sn t | i | d d | d d S( Ni R$ i i ( R) Ra t Returnt ConstR R, Rj ( R, Ra ( ( R t return_stmt s "c C s% t | i | d d | d d S( Ni R$ i i ( t YieldR, Rj Ra ( R, Ra ( ( R t
yield_stmt s c C s t | d j o | i | d } n d } t | d j o | i | d } n d } t | d j o | i | d } n d } t | | | d | d d S( Ni i i R$ i i ( R) Ra R, Rj t expr3R t expr2t expr1t Raise( R, Ra R R R ( ( R t
raise_stmt s c C s | i | d S( Ni ( R, Rj Ra ( R, Ra ( ( R t import_stmt s c C s% t | i | d d | d d S( Ni R$ i i ( t ImportR, t com_dotted_as_namesRa ( R, Ra ( ( R t import_name s c C s | i | d } | d d t i j o" t | d g d | d d SnD | d | d d t i j } t | | i
| d | d d Sd S( Ni i i R R$ i ( R N( R, t com_dotted_nameRa t fromnameR5 t STARt FromR R7 RU t com_import_as_names( R, Ra RU R ( ( R t import_from s c C sV g } x5 t d t | d D] } | i | | d q Wt | d | d d S( Ni i R$ i ( Rv R R) Ra Rc R t Global( R, Ra Rc Rv ( ( R t global_stmt s
c C s | i | d } t | d j oG | i | d } t | d j o | i | d } qw d } n d } } t | | | d | d d S( Ni i i i i R$ i i ( R, Rj Ra R R) R R R t Exec( R, Ra R R R ( ( R t exec_stmt s
c C s^ | i | d } t | d j o | i | d } n d } t | | d | d d S( Ni i i R$ i i ( R, Rj Ra R R) R R t Assert( R, Ra R R ( ( R t assert_stmt s
c C s g } xe t d t | d d D]G } | i | | d } | i | | d } | i | | f q# Wt | d d j o | i | d } n d } t | | d | d d S( Ni i i i iR$ i (
t testsR R) Ra Rc R, Rj t testNodet suiteNodeR t elseNodeR t If( R, Ra R Rc R R R ( ( R t if_stmt s c C st | i | d } | i | d } t | d j o | i | d } n d } t | | | d | d d S( Ni i i i R$ i i ( R, Rj Ra R t bodyNodeR) R R t While( R, Ra R R R ( ( R t
while_stmt s c C s | i | d t } | i | d } | i | d } t | d j o | i | d } n d } t | | | | d | d d S( Ni i i i R$ i i ( R, R Ra R t
assignNodeRj t listNodeR R) R R t For( R, Ra R R R R ( ( R t for_stmt s c C s6 | d d t i j o | i | Sn | i | S( Ni i ( Ra R. t
except_clauseR, t com_try_finallyt com_try_except( R, Ra ( ( R t try_stmt s c C sq t | d j o | i | d Sn g } x6 | D]. } | d t i j o | i | | q5 q5 Wt | S( Ni i (
R) Ra R, R^ Rd RU R. R Rf Rh ( R, Ra RU Rd ( ( R RO s c C s | i t | S( N( R, t
com_binaryt TupleRa ( R, Ra ( ( R t testlist s c C sc t | d j oC | d d t i j o+ | i | d } | i | | d Sn | i | S( Ni i i ( R) Ra R. t gen_forR, Rj t testt com_generator_expressionR ( R, Ra R ( ( R t
testlist_gexp* s +c C sP t | d j o- | d d t i j o | i | d Sn | i t | S( Ni i ( R) Ra R. R[ R, R t Or( R, Ra ( ( R R 0 s +c C s | i t | S( N( R, R t AndRa ( R, Ra ( ( R t and_test6 s c C sF | i | d } t | d j o t | d | d d Sn | S( Nii R$ i ( R, Rj Ra t resultR) t Not( R, Ra R ( ( R t not_test: s c C s | i | d } t | d j o | Sn g } x t d t | d D] } | | d } | d } | d t
i j oB | d } t | d j o! | d j o
d } q d } q n t
| d } | d d } | i | | i | | f qM Wt | | d | S( Ni i i i t nots not ins is notR$ ( R, Rj Ra RU R) t resultsR Rc t nlRV R5 RC R t
_cmp_typesR$ R t Compare( R, Ra RU Rc R RV R R R$ ( ( R t
comparisonA s$
$c C s | i t | S( N( R, R t BitorRa ( R, Ra ( ( R RQ b s c C s | i t | S( N( R, R t BitxorRa ( R, Ra ( ( R t xor_exprf s c C s | i t | S( N( R, R t BitandRa ( R, Ra ( ( R t and_exprj s c C s | i | d } x t d t | d D] } | i | | } | | d d t i j o$ t
| | g d | d d } q, | | d d t i j o$ t | | g d | d d } q, t
d | | d d q, W| S( Ni i i R$ s unexpected token: %s( R, Rj Ra RU R R) Rc t rightR5 t LEFTSHIFTt LeftShiftR t
RightShiftR ( R, Ra RU R Rc ( ( R t
shift_exprn s $ $ c C s | i | d } x t d t | d D] } | i | | } | | d d t i j o$ t
| | g d | d d } q, | | d d t i j o$ t | | g d | d d } q, t
d | | d d q, W| S( Ni i i R$ s unexpected token: %s( R, Rj Ra RU R R) Rc R R5 t PLUSt Addt MINUSt SubR ( R, Ra RU R Rc ( ( R t
arith_expr{ s $ $ c C s | i | d } x t d t | d D] } | i | | } | | d d } | t i
j o t | | g } n | t i j o t
| | g } nZ | t i j o t | | g } n4 | t i j o t | | g } n t d | | d d | _ q, W| S( Ni i i s unexpected token: %s( R, Rj Ra RU R R) Rc R t tR5 R t Mult SLASHt Divt PERCENTt Modt DOUBLESLASHt FloorDivR R$ ( R, Ra RU R Rc R ( ( R t term s
c C s | d } | d } | i | d | d d } | t i j o t | d | d SnS | t i j o t
| d | d Sn+ | t i j o t | d | d } n | S( Ni ii R$ i (
Ra t eltR R, R RU R5 R t UnaryAddR t UnarySubt TILDEt Invert( R, Ra RU R R ( ( R t factor s
!c C s | i | d } x| t d t | D]e } | | } | d t i j o/ t
| | i | | d g d | d Sn | i | | } q) W| S( Ni i R$ i ( R, Rj Ra RU R R) Rc R R5 t
DOUBLESTARt Powert com_apply_trailer( R, Ra RU Rc R ( ( R t power s
c C s. | i | d d | S| d d t _ t S( Ni i ( R, RE Ra RV R$ ( R, Ra ( ( R t atom s c C s7 | d d t i j o t f Sn | i | d S( Ni i ( Ra R5 t RPARR R, Rj ( R, Ra ( ( R R8 s c C s7 | d d t i j o t f Sn | i | d S( Ni i ( Ra R5 t RSQBt ListR, t com_list_constructor( R, Ra ( ( R R: s c C s7 | d d t i j o t f Sn | i | d S( Ni i ( Ra R5 t RBRACEt DictR, t
com_dictmaker( R, Ra ( ( R R< s c C s t | i | d S( Ni ( t BackquoteR, Rj Ra ( R, Ra ( ( R R> s c C s, t | d d } t | d | d d S( Ni i R$ i ( R Ra t kR ( R, Ra R ( ( R R@ s c C sh | i oP | i d d g j o t | d i | i } n t d | i | f Sn t | Sd S( Ns utf-8s
iso-8859-1s # coding: %s
%s( R, RF t unicodet litt encodeR ( R, R ( ( R t decode_literal s
c C sF d } x% | D] } | | i | d 7} q
Wt | d | d d S( NRR i R$ i i ( R Ra RU R, R R ( R, Ra RU R ( ( R RB s
c C s t | d d d | d d S( Ni i R$ i ( t NameRa ( R, Ra ( ( R RD s c C s | i | d S( Ni ( R, R- RU ( R, RU ( ( R R s c C s | i | d | d S( Ni i ( R, R- RU ( R, RU ( ( R Rj s c G s t t d S( N( R R R ( R, R% ( ( R R4 s c C s g } g } d } d } x| t | j o| | } | d t i j p | d t i j o | d t i j oO | | d } | d t i
j o) | i | d | t B} | d } q n | t | j o\ | | d } | t i j o | | d } n t d | | i | d | t B} n Pn | i | i | | d } | t | j o Pn | | d t i j o, | i | i | | d | d } n% t | o | i t d n | d } q W| | | f S( Ni i i s unexpected token: %si ( Rv Rw Rx Rc R) Ra RU R5 R R RC R t
CO_VARARGSR R t CO_VARKEYWORDSR, t com_fpdefR Rj R R ( R, Ra RU Rc Rx Rv Rw R ( ( R Ru sB
(
c C s9 | d d t i j o | i | d Sn | d d S( Ni i i ( RU R5 R7 R, t
com_fplist( R, RU ( ( R R 6 s c C su t | d j o | i | d Sn g } x: t d t | d D] } | i | i | | qG Wt | S( Ni i ( R) RU R, R RJ R Rc R R ( R, RU Rc RJ ( ( R R < s c C s_ d } xN | D]F } t | t f j o' | d d j o | | d d } q
q
W| d S( NRR i i t .i( R2 RU RV R ( R, RU R2 RV ( ( R R E s *c C sT | d } | i | d d } t | d j o | d f Sn | | d d f S( Ni i i ( RU R, R t dotR) R ( R, RU R ( ( R t com_dotted_as_nameM s
c C sa | d } | i | d g } x: t d t | d D] } | i | i | | q9 W| S( Ni i i ( RU R, R Rv R R) Rc R ( R, RU Rc Rv ( ( R R W s
c C sM | d } t | d j o | d d d f Sn | d d | d d f S( Ni i i ( RU R) R ( R, RU ( ( R t com_import_as_name_ s
c C sa | d } | i | d g } x: t d t | d D] } | i | i | | q9 W| S( Ni i i ( RU R, R Rv R R) Rc R ( R, RU Rc Rv ( ( R R i s
c C sG g } x: t d t | d D] } | i | i | | q W| S( Ni i ( R} R R) RU Rc R R, Rj ( R, RU Rc R} ( ( R R~ q s
c C s5 t | i | d | i | d d | d d S( Ni i R$ i ( t
TryFinallyR, Rj Ra ( R, Ra ( ( R R w s c C sL | i | d } g } d } x t d t | d D] } | | } | d t i j o t | d j oJ | i | d } t | d j o | i | d t } q d } n d } } | i | | | i | | d f n | d t i j o | i | | d } q8 q8 Wt | i | d | | d | d d S( Ni i i i R$ ( R, Rj Ra R t clausesR R R R) Rc RU R. R R R R R R R5 RC t TryExcept( R, Ra RU Rc R R R R R ( ( R R } s$
+ c C s | d S( Ni ( RU ( R, RU ( ( R R s c C sJ | i | } | i t t t t f j o | Sn t d | i i
d S( s Return node suitable for lvalue of augmented assignment
Names, slices, and attributes are the only allowable nodes.
s can't assign to %sN( R, Rj RU R t __class__R t Slicet SubscriptRl t SyntaxErrorR ( R, RU R ( ( R R s
c C s x~| d } | t i j p | t i j p | t i j o5 t | d j o | i | | Sn | d } q | t
j o. t | d j o
t d n | d } q | t i j o | d d t i
j o
t d n t | d j o | i | d } x^ t d t | d D]C } | | } | d t i j o
t d n | i | | } q"W| i | | d | Sn | d } q | t i
j o | d d } | t i j o/ | d } | d t i j o
t d qoq|| t i j o? | d } | d t i j o
t d n | i | | Sq|| t i j o | i | d | Sq|t d q t d q Wd S(
Ni i i s can't assign to operatoris can't assign to ()s can't assign to []s can't assign to literals bad assignment( RU R R. t exprlistR R R) R, t com_assign_tuplet assigningt
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t com_assign_listRC t com_assign_name( R, RU R( R+ Rc R* R ( ( R R sP
0
c C s\ g } x= t d t | d D]# } | i | i | | | q Wt | d t
| S( Ni i R$ ( t assignsR R) RU Rc R R, R R( t AssTupleR# ( R, RU R( R/ Rc ( ( R R' s
!c C s g } x t d t | d D]g } | d t | j o- | | d d t i j o
t d qi n | i | i
| | | q Wt | d t
| S( Ni i i s" can't assign to list comprehensionR$ ( R/ R R) RU Rc R. t list_forR% R R, R R( t AssListR# ( R, RU R( R/ Rc ( ( R R- s
!c C s t | d | d | d S( Ni R$ i ( t AssNameRU R( ( R, RU R( ( ( R R. s c C s | d d } | t i j o | i | | d | Sn | t i j o | i | | d | Sn | t i
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t d n t d | d S( Ni i i s can't assign to function calls unknown trailer type: %s( RU R R5 t DOTR, t com_assign_attrR* R( R9 t com_subscriptlistR7 R% ( R, R* RU R( R ( ( R R, s
c C s t | | d | d | d S( Ni R$ i( t AssAttrR* RU R( ( R, R* RU R( ( ( R R5 s c C s t | } | d j o% | d } | i | | d Sn g } xD t d | d D]0 } | | } | i | i | | d qW W| | d t | S( s= Compile 'NODE (OP NODE)*' into (type, [ node1, ..., nodeN ]).i i i R$ N( R) Ra R RV R, R R0 R Rc R t constructorR# ( R, R8 Ra Rc R0 R RV ( ( R R s
$c C s> | i | | d } t | t o | Sn t | g S( Ni ( R, R RU R R Rh ( R, RU R ( ( R R^ s
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R, R RU R R Rh Rd t extendR R ( R, Rd RU R ( ( R Rf s
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| d | d i S( Ni i R$ ( t valuesR R) Ra Rc R. R1 R, t com_list_comprehensionR5 R R Rj R R$ ( R, Ra Rc R: ( ( R R s
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com_list_iterR t
ListCompIft newift ifsR% t ListCompRQ ( R, RQ RU R R@ R R$ RC R> R R ( ( R R; s.
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Ra R R5 R7 R, Ro t primaryNodeR4 t com_select_memberR9 R6 t OP_APPLYR% ( R, RN Ra R ( ( R R u s c C s< | d t i j o
t d n t | | d d | d S( Ni s member must be a namei R$ i ( Ra R5 RC R% Rl RN ( R, RN Ra ( ( R RO s
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Ni R$ i i i s& generator expression needs parenthesiss$ already have the varargs indentifiers# already have the kwargs indentifiers unknown node type: %s( Ra R5 R t CallFuncRN R# R% t kwR) t len_nodelistR Rc RU R R R, t com_argumentR R RL R. R R% R R R t star_nodet
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c C sD t | d j oI | d d t i j o1 | i | d } d | i | | d f Sn t | d j o/ | o
t d n d | i | d f Sn | i | d } | d } x6 t | d j o" | d t i
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j o t d | d n t | d | d | d } d | f S( Ni i i i s! non-keyword arg after keyword args# keyword can't be an expression (%s)R$ ( R) Ra R. R R, Rj R R RR R% R RV R5 RC t KeywordRU ( R, Ra RR RU RV R R ( ( R RT s +
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subscriptsR Rc R t
com_subscriptR$ R# ( R, R* Ra R( R[ RY Rc ( ( R R6 s
[ c C s | d } | d } | t i j o# | d d t i j o t Sn | t i j p t | d j o | i | Sn | i
| S( Ni i i ( RU R+ R R5 R4 t EllipsisR| R) R, t com_sliceobjRj ( R, RU R+ R ( ( R R\ s
( #c C sE g } | d d t i j o | i t d d } n! | i | i | d d } | t
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| d j o | i t d q | i | i | d q Wt | d t | S( Ni i i i R$ ( R0 RU R5 R| R R R Rc R, Rj R) R. R R t jR+ t SliceobjR# ( R, RU R+ Rc R0 R_ ( ( R R^ s"
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R t lowert upperR) RU R5 R| R, Rj R# R* R( R# ( R, R* RU R( Rb Ra ( ( R RZ s
c C s | d j o | d } | d } n | t i j of t | d j o | i | d Sn x3 | D]+ } | d t i j o | i | Sqd qd Wd Sn | t i
j o> x3 | D]+ } | d t i j o | i | Sq q Wd Sn | t i j oS | d d t i
j o3 d } x" | D] } | t | d } q W| Sn d Sn | t i j p | t i j p | t i j o | i | d Sn | t j o( t | d j o | i | d Sn d S( Ni i RR ( RV R RU R. RO R) R, R` RY R RY R R5 RA t sR R R t
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testlist_safet testlist1R& R R R R R RQ R R R R R R R R R8 R: R< R> R@ R RB RD R t _callersRj R4 Ru R R R R R R R R~ R R R R R R' R- R. R, R5 R R^ Rf R R. R R; RA R RH R R RO Ro RT R6 R\ R^ RZ R R` ( ( ( R R _ s
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