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d/ ZB d0 ZC h ZD e eD e i e iE d1 ZF d2 ZG eH d3 ZI eH d4 ZJ eH eK eL eM d5 ZN eI e i eO d6 ZP e iQ d7 ZR e iQ d8 ZS e i iT e i iU e i i e iV d9 ZW d:d; ZX d<d=d> ZY d? ZZ e i[ d@ Z\ e i[ dA Z] d S(B s> Tools - Add-ons for Python written in C for performance.
Copyright (c) 2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
Copyright (c) 2000-2001, eGenix.com Software GmbH; mailto:info@egenix.com
See the documentation for further information on copyrights,
or contact the author. All Rights Reserved.
( t *( s __version__Nc G sj t | d j o g Sn t t t t t | | | f } | i t
t | d t | S( s sortedby(sequence,*indices)
Returns a list representing the sequence sorted ascending by
the fields pointed to by the additional arguments
(indices). sequence must be at least two-dimensional, e.g. a
list of tuples.
i iN( i( t lent sequencet applyt tuplest tuplet extractt listst indicest xt sortt mapt get( R R R ( ( t2 /usr/lib/python2.4/site-packages/mx/Tools/Tools.pyt sortedby s +
c G sa t | d j o g Sn t | d j o t | | d Sn t t t | | Sd S( sF projection(sequence,*indices)
Experimental function that extracts columns from tables
(sequence of sequences). If only one index is given, a list of
all elements in that dimension is returned. For more indices,
the list will contain tuples with entries for each given
dimension.
i i N( R R R R R R ( R R ( ( R
t
projection& s
c C s^ | g | } t | d } | | } x0 t | D]" \ } } | | | | | | <q4 W| S( s frange(x,y,ticks)
Returns a list of ticks equidistant floating point values from
the interval [x,y] such that the first is equal to x and the
last equal to y.
i N(
R t tickst lt floatt ftickst yt difft iranget it value( R R R R R R R R ( ( R
t frange8 s
c C s= | | } | o& t | | j o t | d } n | S( s issequence(obj)
Returns 1 iff obj defines the sequence protocol, o
otherwise. For instances at least __getitem__ must be defined.
t __getitem__N( t isSequenceTypet objt rct typet InstanceTypet hasattr( R R R R ( ( R
t
issequenceI s
c C sN t i d } | i i | p# | i i | p | i i | } ~ | S( sy defined(name)
Return 1/0 depending on whether name is a defined symbol
in the caller's namespace.
i N( t syst cur_framet framet f_localst has_keyt namet f_globalst
f_builtinst ok( R' R$ R* ( ( R
t definedY s
8c C s? g } | i } x | o | | | i } q W| i | S( s acqchain(obj)
Returns a list of object representing the acquisition
chain that the new builtin acquire() would scan.
The order is top to bottom, with obj always being the
last entry in the list.
N( R t appendR t baseobjt reverse( R R R, ( ( R
t acqchaini s
i i c C sD | d j o | | h d h <| Sn | | h d h < Sd S( s Restricted execution eval().
After a suggestion by Tim Peters on comp.lang.python. locals
can be given as local namespace to use when evaluating the
codestring.
t __builtins__N( t localst Nonet evalt
codestring( R4 R1 R3 ( ( R
t reval s
c C s t d i i d S( s Returns the doc string of the calling function.
Note that this only works for Python functions since it relies
on the code object of the calling function.
i i N( R# t f_codet co_consts( ( ( R
t docstring s t 00t 01t 02t 03t 04t 05t 06t 07t 08t 09t 0at 0bt 0ct 0dt 0et 0ft 10t 11t 12t 13t 14t 15t 16t 17t 18t 19t 1at 1bt 1ct 1dt 1et 1ft 20t 21t 22t 23t 24t 25t 26t 27t 28t 29t 2at 2bt 2ct 2dt 2et 2ft 30t 31t 32t 33t 34t 35t 36t 37t 38t 39t 3at 3bt 3ct 3dt 3et 3ft 40t 41t 42t 43t 44t 45t 46t 47t 48t 49t 4at 4bt 4ct 4dt 4et 4ft 50t 51t 52t 53t 54t 55t 56t 57t 58t 59t 5at 5bt 5ct 5dt 5et 5ft 60t 61t 62t 63t 64t 65t 66t 67t 68t 69t 6at 6bt 6ct 6dt 6et 6ft 70t 71t 72t 73t 74t 75t 76t 77t 78t 79t 7at 7bt 7ct 7dt 7et 7ft 80t 81t 82t 83t 84t 85t 86t 87t 88t 89t 8at 8bt 8ct 8dt 8et 8ft 90t 91t 92t 93t 94t 95t 96t 97t 98t 99t 9at 9bt 9ct 9dt 9et 9ft a0t a1t a2t a3t a4t a5t a6t a7t a8t a9t aat abt act adt aet aft b0t b1t b2t b3t b4t b5t b6t b7t b8t b9t bat bbt bct bdt bet bft c0t c1t c2t c3t c4t c5t c6t c7t c8t c9t cat cbt cct cdt cet cft d0t d1t d2t d3t d4t d5t d6t d7t d8t d9t dat dbt dct ddt det dft e0t e1t e2t e3t e4t e5t e6t e7t e8t e9t eat ebt ect edt eet eft f0t f1t f2t f3t f4t f5t f6t f7t f8t f9t fat fbt fct fdt fet ffc C sA g } | i } x" | D] } | | | | q W| | d S( s HEX encode a data string.
Encoding is done character per character using two byte
lower-case HEX characters.
t N( R R, t datat ct hexcodet ordt join( R: R< R= R> R; R R, ( ( R
t hexencode s c C s" | p | Sn | d j o t i } n | d j o h } d } n d } g } xo | D]g } | | | }
| |
o | i |
q\ | d j o | i |
d j o q\ q\ d | |
<q\ W| d j o5 x2 | D]& } t | | | | d | | q Wn | p | i Sn d S( s Build a list of filenames starting with the filenames and
directories given in files.
The filenames in are made absolute relative to dir. dir
defaults to the current working directory if not given.
If levels is greater than 0, directories in the files list are
recursed into up the given number of levels.
If filefilter is given, as re match object, then all filenames
(the absolute names) are matched against it. Filenames which
do not match the criteria are removed from the list.
Note that directories are not included in the resulting list.
All filenames are non-directories.
i i N( t filest dirR2 t ost getcwdt filedictt recursingt dirst fileR> t abspatht isdirR, t
filefiltert matcht levelst scanfilest listdirt keys( R@ RA RL RJ RD R> RI RN RG RF RH RE ( ( R
RM s0
#
(t DictScanc B s8 t Z d Z d Z d Z e d Z e d Z RS( s Forward iterator for Python dictionaries.
Note that no precaution is taken to insure that the dictionary
is not modified in between calls to the __getitem__ method. It
is the user's responsibility to ensure that the dictionary is
neither modified, nor changed in size, since this would result
in skipping entries or double occurance of items in the scan.
The iterator inherits all methods from the underlying
dictionary for convenience.
c C s | | _ d | _ d S( Ni ( t
dictionaryt selft position( RR RQ ( ( R
t __init__ s c C s
d | _ d S( s6 Resets the iterator to its initial position.
i N( RR RS ( RR ( ( R
t reset s c C s+ | | i | i \ } } | _ | | f S( sn "for x in iterator" interface.
Note: for loops are cancelled by raising an IndexError.
N( t dictscanRR RQ RS t kt v( RR t indexRV RW RX ( ( R
R s !c C s | | i | S( sC Inherit all other methods from the underlying dictionary.
N( t getattrRR RQ R' ( RR R' RZ ( ( R
t __getattr__* s ( t __name__t
__module__t __doc__RT RU RV R RZ R[ ( ( ( R
RP s
s \s*(-?\d+)\s*$s \s*(-?\d+)\s*-\s*(-?\d+)\s*$c
C s g } | i } x | | d D] } | i | } | o! | t | i d q n | i | } | o< t t | i \ } } t | | d | t | )q q W| S( s Converts a textual representation of integer numbers and ranges
to a Python list.
Supported formats: 2,3,4,2-10,-1 - -3, 5 - -2
Values are appended to the created list in the order specified
in the string.
t ,i i N( R R, t splitt st entryt integerRK t mt intt groupst integerRangeR t startt endt rangeR (
Ra R` Rc Rg Ri Rh Rd R Rb R, ( ( R
t srange8 s
%c C s y
d k } WnZ t j
oN | d j o t i i d d } n | d j o
d } n | | f Sn XyZ | d j o' | d j o
d } n | i } n | i | } | i
| d } Wn | i j
o n X| | f S( s Tries to return the fully qualified (hostname, ip) for the
given hostname.
If hostname is None, the default name of the local host is
chosen. ip then defaults to '127.0.0.1' if not given.
The function modifies the input data according to what it
finds using the socket module. If that doesn't work the input
data is returned unchanged.
Nt HOSTNAMEs 127.0.0.1i ( t sockett ImportErrort hostnameR2 RB t environR t ipt gethostnamet
gethostbynamet
gethostbyaddrt error( Ro Rq Rm ( ( R
t
fqhostnameS s&
c C sR t | \ } } t i | d d } t | d j o | d f Sn t | S( s Tries to determine the domain name of the given hostname and
returns a tuple (host, domain).
If hostname is not given, the default name of the local host
is chosen as reference.
t .i R9 N( Rv Ro Rq t stringR` R R R ( Ro Rq R ( ( R
t splitdomains s R9 c C s) d k } y | i SWn | Sn Xd S( s Return the user name of the user running the current process.
If no user name can be determined, default is returned.
N( t getpasst getusert default( R| Rz ( ( R
t username s c C s | i i } | i } | i } | i } d } x^ t d t | d D]D } | t | | } | | j o Pn | t | | d } qF W| S( s^ Calculate the correct line number of the
traceback given in tb (even with -O on)
i i i N( t tbt tb_frameR6 R; t co_lnotabt tabt co_firstlinenot linet tb_lastit stopatt addrRj R R R= ( R~ R; R R R R R ( ( R
t tb_lineno s
c B sB d k } e | d } | i d | i | } | | | Ud S( s? Execute a byte compiled file filename in globals, locals
Nt rbi ( t marshalt opent filenamet ft readt loadt codet globalsR1 ( R R R1 R R R ( ( R
t execpyc s
c C s2 d k } t | d } | i d | i | S( s\ Load the code from a byte compiled file filename and return it
as code object.
NR i ( R R R R R R ( R R R ( ( R
t loadpyc s
c B s_ d k } d k } | i i | o | i | Sn | i | } | | i U| | i | <| S( sA Imports a code object as module name.
Returns the previously registered module in case the module
name was already imported. name has to be the full package
name (pkg.pkg.mod) for the module; package local names are not
supported and will result in top-level modules to be created.
N( t impR" t modulesR& R' t
new_moduleRd R t __dict__( R' R R" R Rd ( ( R
t import_code s
c C sS t d | d | d d t | d } t d | } t d | } | S( s Format a sequence of adjancent pairs into a list
of 2-tuples, e.g. 'abcdef' gives [('a','b'),('c','d'),
('e','f')]
ii i i c C s | d S( Ni ( R ( R ( ( R
t <lambda> s c C s | d S( Ni ( R ( R ( ( R
R s N( i i ( R R2 R R R t filter( R R ( ( R
t pairs2tuples s
+c C sX y d d Wn | d i i } n X| o$ x! t | D] } | i } q= Wn | S( s Return the execution frame level positions up the
execution stack (defaulting to the current frame).
WARNING: Storing the frame in variables will cause
circular references which could result in the frames
and associated objects to live forever.
i i i N( t exc_infoR t f_backR$ t levelt trangeR ( R R R R$ ( ( R
t
exec_frame s
c C sB | i } | i d o d Sn | i t | d | d <d S( s Add all known attributes of base classes to classobj's
attribute dictionary
- does not overwrite attributes
t
__frozen__Ni ( t classobjR t dictR& t updatet frozen( R R ( ( R
t freeze s c C sp h } xS t | i D]B } | i } | i d p t | } n | } | i
| q W| i
| i | S( s| Return a dictionary that contains all known attributes
of classobj
- uses cached versions if available
R N( R R. R t __bases__R; R t otherdictR& R t
frozendictR ( R R R; R R ( ( R
R s c C s | d j o
h } n t | d d } | d j o t | | | n | d j oB xO | i i D]* \ } } t | | o | | | <qg qg Wn | i | i | S( s Find all attributes that are accessible through obj
and return them as dictionary.
If of_class is given, only those attributes are returned that
are instances of that class. The function mimics the
inheritance scheme used by Python.
t __class__N(
t dR2 RZ R R t class_attributest of_classR t itemsRW RX t
isinstanceR ( R R R R RW RX ( ( R
t
attributes
s
c C s | d j o
h } n t | d d } | d j o+ x( t | D] } t | | | qC Wn | d j oB xO | i i
D]* \ } } t
| | o | | | <q~ q~ Wn | i t i | S( s Find all attributes that are accessible through classobj
and return them as dictionary.
If of_class is given, only those attributes are returned that
are instances of that class. The function mimics the
inheritance scheme used by Python.
R N( R R2 RZ R t basesR. t bR R R R RW RX R R R ( R R R R RW R RX ( ( R
R ' s
c C sc h } | oB xO | i i D]* \ } } t | | o | | | <q q Wn | i | i | S( sp Find all instance attributes of obj that are instances of
of_class and return them as dictionary.
N( R R R R R RW RX R R ( R R R RW RX ( ( R
t inst_attributesB s c C sx | i } | f | i } | i } xO | D]G } x> | i i D]- } | i
| p t | | | | <q? q? Wq) Wd S( s Add all known attributes of the instance's class and direct
base classes to its attribute dictionary, binding methods if
necessary
- only one level deep
- does not overwrite attributes
*WARNING:* this function introduces lots of circular
references (one for each method) !!! Be sure to clear
instance.__dict__ before unscoping instance !!!
N( t instanceR R R t classesR R R; RO t aR& RZ ( R R R; R R R ( ( R
t localizeQ s c C s~ | i } | f | i } | i i } xO | D]G } x> | i i D]- } | i | p t | | | | <qE qE Wq/ W| S( sZ Add all known attributes of the instance's class and direct
base classes to a dictionary, binding methods if necessary, and
return it.
- only one level deep
*WARNING:* this function introduces lots of circular
references !!! Be sure to clear the returned dictionars
before unscoping it !!!
N(
R R R R R R t copyR R; RO R R& RZ ( R R R; R R R ( ( R
t localizedf s i
c C s# y | | | SWn d Sn Xd S( s Convert a string to an integer.
Works like string.atoi except that in case of an error no
exception raised but 0 is returned; this makes it useful in
conjunction with map().
i N( t orig_atoit strt base( R R R ( ( R
t ascii2int{ s
c C s | i | i } | d d !} | d d !} y\t i | } t | d j o d Sn t i | d d } t i | d d } t | d j o t | d j o d Sn t | | } t | d j o | i d n" t | d j o | d } n t | } n d } t | d j o t | d j o d
Sn | i t t t i | } | d d j o | d f | d d !} q| d d j oQ | d d j o d
| d f | d d !} qd | d f | d d !} qn d t | j o t | j n o d Sn y | i | | d } Wn d Sn X| i | d d j o | d } n | SWn d Sn Xd S( s Convert a textual representation of date/time into an internal
time.time() value using some assumptions on abbreviations.
- returns negative numbers to indictate errors
- knows about DST (makes small errors near the time of switching)
- centuries can be omitted: 0-69 becomes 20xx, 70-99 19xx
Known formats:
- 1.1.90, 01.01.90, 1.1.1990 (date only, time defaults to 0:00:00)
- 1.1. (current year is appended, 0:00:00)
- 1.1.90 14:00
- 14:00 (today is used as date)
i i i iRw it :i i iid iF i il ii i iN( i i i ( i i i ( t timet localtimet nowt tiR Rx R` R R t splitfieldsR t tR R R, R R. t atoit mktimet tm( R R R R R R R R R ( ( R
t str2time sT
$* c C sG y t | d } Wn t j
o | Sn X| i } | i | S( sU Return the file's content as a string, default in case
there's an error
R N( R R R t IOErrorR| R R; t close( R R| R; R ( ( R
t filecontent s
c C sD | d @| d ?d @| d ?d @| d ?d @f } t i t t | S( s) Convert long integer x to a string.
i i i i N( R R Rx R> R t chr( R R ( ( R
t long2str s .t ModuleFinalizationc B s t Z d Z d Z RS( Nc C s
| | _ d S( N( t functionRR t fini( RR R ( ( R
RT s c C s | i d S( N( RR R ( RR ( ( R
t __del__ s ( R\ R] RT R ( ( ( R
R s c C sn y d d WnU t i d i } x t | D] } | i } q2 W| i i } | i i } ~ n X| | f S( ss func_info()
Returns a tuple (name,filename) giving the name of the calling
function (*) and the filename where it is defined.
Note that this only works if the calling function is a Python
function or method (because only these create new execution
frames). When called from e.g. a builtin function like map(),
it will return information about the function from where the
builtin function was called.
(*) level indicates how far up the calling stack to look for
the information. Default is one level meaning: the calling
function.
i i i N(
R" R R R$ R R R R R6 t co_nameR' t co_filenameR ( R R' R R$ R ( ( R
t func_info s
c C s t | d o
| i } n | i } | i } | i } t | i
| } | i o t
| t
| i } x | i D] } y t | } Wn
d } n Xt
| d j o | d d } n | | } | d d j o
d } n d | | f | | <| d } qx Wn | i d
@o& | i d | i
| | d } n | i d @o& | i d
| i
| | d } n d | t i | d f S( s func_sig(func)
Returns the signature of a Python function/method as string.
Keyword initializers are also shown using
repr(). Representations longer than 100 bytes are truncated.
XXX Anonymous argument ((a,b,c)=(1,2,3)) are not supported and
probably never will be since they require disassembling the
byte code which is bound to fail once byte code optimizers find
their way into every Pythoneers home...
t im_funcs <repr-error>id s ...i Rw s (...)s %s=%si i R i s **s %s(%s)s , N( R t funcR t func_codeR R t fnamet co_argcountt callargst listt co_varnamest argst
func_defaultsR R R| t reprt rt argt co_flagsR, Rx R> ( R R R R R R| R R R ( ( R
t func_sig s:
c
C ss y d d Wn t i d i } n Xx t | D] } | i } q6 W| i } | i
} g } | i
} | i d @o | d } n | i d @o | d } n xx | i | D]i } y t | i | } Wn
d } n Xt | d j o | d d } n | i d | | f q W| i o# d
| i i i | i i f } n d } ~ ~ d | t i | d
| f S( sU func_call()
Returns a string explaining which parameters where passed to
the calling function (*) and from which file and line number it
was invoked. Same comments as for func_info(). Note that
line number information is only correct when running Python
in non-optimized mode (i.e. without -O). Sample return string:
'test(a=1, b=2, c=3, args=()) # called from "Tools.py":353'
(*) level indicates how far up the calling stack to look for
the information. Default is one level meaning: the calling
function.
i i i i i s <repr-error>id s ...s %s=%ss # called from "%s":%is # called from <toplevel>s %s(%s) %ss , N( R" R R R$ R R R R R6 R R R R R R R R RX R R% R R R, R t f_linenot whereRx R> (
R R R R$ RX R R R R R ( ( R
t func_call< s<
#c C s y d d Wn t i d i i } n X| i } | i } x8 | i D]* \ } } | i | p | | | <qK qK W~ ~ ~ d S( sb Copy all builtins to the caller's locals. This is done
in a non-overwriting fashion.
i i i N(
R" R R R R$ R) t builtinsR% R1 R RW RX R& ( R R$ RX RW R1 ( ( R
t localize_builtinsm s
c C s | d j o | } | i } n | i } | i } t | | j o
| i
} n' t | | j o
| } n
| i } | | f } | i | d } | d j oP t | | i p5 t o* t i i d | | | | | i f q q | Sn | g }
x` |
p
t | n |
d } |
d =| i o t | i |
d d +n | | j o Pq q Wx[ |
p
t | n |
d } t | | d } | d j o | | | <| Sn |
d =qbWt d | d S( s Return the unbound method that is defined *after* method in the
inheritance order of object with the same name as method
(usually called base method or overridden method).
object can be an instance, class or bound method. method, if
given, may be a bound or unbound method. If it is not given,
object must be bound method.
Note: Unbound methods must be called with an instance as first
argument.
The function uses a cache to speed up processing. Changes done
to the class structure after the first hit will not be noticed
by the function.
XXX Rewrite in C to increase performance.
s< basemethod(%s, %s): cached version (%s) mismatch: %s !-> %s
i i s method %sN( t methodR2 t objectt im_selft im_classt defclassR\ R' R R R t objclasst ClassTypet
cacheentryt cacheR t
basemethodt
issubclasst __debug__R" t stderrt writet patht AttributeErrorR; R R RZ ( R R R R R R' R R R R; R R ( ( R
R sP
.
c C s | g } xs t t | D]_ \ } } | i oI g } x' | i D] } t | | t
| )qB W| | | d | d +q q W| S( s Return a list representing the lookup path taken by getattr()
whenever an attribute from classobj is requested.
The path consists of all class objects passed during lookup in
the right order.
i N( R R R. R R R; R R R t lookup_pathR ( R R; R R R R ( ( R
R s
t$ 0123456789abcdefghijklmnopqrstuvwxyzs@ ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/i c C ss | d j o d Sn g } | i } x5 | d j o' | | | \ } } | | | q' W| i | | d S( s Return a string representation of integer x in base b.
Uses code as encoding table (defaults to an extended HEX
table).
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Uses linebreak as end-of-line indicator (defaults to LF).
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Possible values for encoding include:
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'hex' - HEX encoding (no line breaks)
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supported natively by Python via the codec registry.
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sm Decode data using the given encoding.
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In Python 2.0 and up, encoding may also be an encoding
supported natively by Python via the codec registry.
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