o
0inf @ sJ d Z ddlZddlZddlZddlZg dZd8ddZdd Zd9dd Zd8d
d Z d8d d
Z
dZ dZ G dd dZ
e
Zdd ZeedddfddZeeddfddZefddZdd Zd d Zd:d d Zd;d!d"Zd:d#d$Zdr selfr r r! __repr__X z_Sentinel.__repr__N)__name__
__module__ __qualname__r- r r r r! r) W s r) c C sT |t u |t u kr td|| u rt u r&n ||fS | d ur$| | jfS dS ||fS )Nz-Both or neither of value and tb must be givenNN) _sentinel
ValueError
__traceback__)excvaluer& r r r! _parse_value_tb] s
r8 Tc C sX t | ||\}}|du rtj}tt||||dd}|j|dD ] }t||dd q dS )a Print exception up to 'limit' stack trace entries from 'tb' to 'file'.
This differs from print_tb() in the following ways: (1) if
traceback is not None, it prints a header "Traceback (most recent
call last):"; (2) it prints the exception type and value after the
stack trace; (3) if type is SyntaxError and value has the
appropriate format, it prints the line where the syntax error
occurred with a caret on the next line indicating the approximate
position of the error.
NTr$ compactchainr r )r8 r r r typer r )r6 r7 r& r$ r r< teliner r r! r h s r c C s6 t | ||\}}tt||||dd}t|j|dS )az Format a stack trace and the exception information.
The arguments have the same meaning as the corresponding arguments
to print_exception(). The return value is a list of strings, each
ending in a newline and some containing internal newlines. When
these lines are concatenated and printed, exactly the same text is
printed as does print_exception().
Tr9 r; )r8 r r= listr )r6 r7 r& r$ r< r> r r r! r | s
r c C s, |t u r| }tt||ddd}t| S )a Format the exception part of a traceback.
The return value is a list of strings, each ending in a newline.
Normally, the list contains a single string; however, for
SyntaxError exceptions, it contains several lines that (when
printed) display detailed information about where the syntax
error occurred.
The message indicating which exception occurred is always the last
string in the list.
NT)r: )r3 r r= r@ r )r6 r7 r> r r r! r s r c C s0 t |}|d u s
|sd| }|S d| |f }|S )Nz%s
z%s: %s
) _some_str)etyper7 valuestrr? r r r! _format_final_exc_line s rD c C s$ zt | W S dt| j Y S )Nz)strr= r/ )r7 r r r! rA s
rA c C s t t | ||d dS )z>Shorthand for 'print_exception(*sys.exc_info(), limit, file)'.r$ r r< N)r r exc_inforF r r r! r r c C s d tt | |dS )z%Like print_exc() but return a string.r r$ r< )joinr r rG rI r r r! r
rH r
c C s. t tds tdttjtjtj| || dS )znThis is a shorthand for 'print_exception(sys.last_type,
sys.last_value, sys.last_traceback, limit, file)'. last_typezno last exceptionN)hasattrr r4 r rK
last_valuelast_tracebackrF r r r! r s
r c C s* | du r t j} tt| |d|d dS )zPrint a stack trace from its invocation point.
The optional 'f' argument can be used to specify an alternate
stack frame at which to start. The optional 'limit' and 'file'
arguments have the same meaning as for print_exception().
Nr# r% )r _getframef_backr" r )fr$ r r r r! r
s
r
c C s" | du r t j} tt| |dS )z5Shorthand for 'format_list(extract_stack(f, limit))'.Nr# )r rO rP r r )rQ r$ r r r! r s
r c C s0 | du r t j} tjt| |d}| |S )as Extract the raw traceback from the current stack frame.
The return value has the same format as for extract_tb(). The
optional 'f' and 'limit' arguments have the same meaning as for
print_stack(). Each item in the list is a quadruple (filename,
line number, function name, text), and the entries are in order
from oldest to newest stack frame.
Nr# )r rO rP r r( r reverse)rQ r$ stackr r r! r s
r c C s@ | dur z| j W n ty Y nw | j} | dusdS dS )zEClear all references to local variables in the frames of a traceback.N)tb_frameclear RuntimeErrortb_nextr& r r r! r s r c @ sZ e Zd ZdZdZddddddZdd Zd
d Zd d
Zdd Z dd Z
e dd Z dS )r a, A single frame from a traceback.
- :attr:`filename` The filename for the frame.
- :attr:`lineno` The line within filename for the frame that was
active when the frame was captured.
- :attr:`name` The name of the function or method that was executing
when the frame was captured.
- :attr:`line` The text from the linecache module for the
of code that was running when the frame was captured.
- :attr:`locals` Either None if locals were not supplied, or a dict
mapping the name to the repr() of the variable.
)filenamelinenoname_linelocalsTN) lookup_liner] r? c C sH || _ || _|| _|| _|r| j |r dd | D | _dS d| _dS )a Construct a FrameSummary.
:param lookup_line: If True, `linecache` is consulted for the source
code line. Otherwise, the line will be looked up when first needed.
:param locals: If supplied the frame locals, which will be captured as
object representations.
:param line: If provided, use this instead of looking up the line in
the linecache.
c S s i | ] \}}|t |qS r )repr).0kvr r r!
s z)FrameSummary.__init__..N)rY rZ r[ r\ r? itemsr] )r, rY rZ r[ r^ r] r? r r r! __init__ s &zFrameSummary.__init__c C s` t |tr | j|jko | j|jko | j|jko | j|jkS t |tr.| j| j| j| jf|kS tS N)
isinstancer rY rZ r[ r] tupler? NotImplementedr, otherr r r! __eq__ s
zFrameSummary.__eq__c C s | j | j| j| jf| S rf )rY rZ r[ r? )r, posr r r! __getitem__ zFrameSummary.__getitem__c C s t | j| j| j| jgS rf )iterrY rZ r[ r? r+ r r r! __iter__# ro zFrameSummary.__iter__c C s dj | j| j| jdS )Nz7)rY rZ r[ )r rY rZ r[ r+ r r r! r- & s zFrameSummary.__repr__c C r* )N r r+ r r r! __len__* r. zFrameSummary.__len__c C s4 | j d u r| jd u r d S t| j| j| _ | j S rf )r\ rZ linecachegetlinerY stripr+ r r r! r? - s
zFrameSummary.line)
r/ r0 r1 __doc__ __slots__re rl rn rq r- rs propertyr? r r r r! r s
r c c s@ | du r t jj} | dur | | jfV | j} | dusdS dS )zWalk a stack yielding the frame and line number for each frame.
This will follow f.f_back from the given frame. If no frame is given, the
current stack is used. Usually used with StackSummary.extract.
N)r rO rP f_lineno)rQ r r r! r 5 s r c c s. | dur| j | jfV | j} | dusdS dS )zWalk a traceback yielding the frame and line number for each frame.
This will follow tb.tb_next (and thus is in the opposite order to
walk_stack). Usually used with StackSummary.extract.
N)rT tb_linenorW rX r r r! r B s
r c @ s: e Zd ZdZeddddddZedd Zd
d ZdS ) r zA stack of frames.NTFr$ lookup_linescapture_localsc
C s |du rt tdd}|dur|dk rd}|dur+|dkr#t||}ntj|| d}| }t }|D ]-\}}|j} | j}
| j } |
|
t |
|j
|rR|j} nd} |t|
|| d| d q3|D ]}
t |
qc|ru|D ]}|j qo|S )a? Create a StackSummary from a traceback or stack object.
:param frame_gen: A generator that yields (frame, lineno) tuples to
include in the stack.
:param limit: None to include all frames or the number of frames to
include.
:param lookup_lines: If True, lookup lines for each frame immediately,
otherwise lookup is deferred until the frame is rendered.
:param capture_locals: If True, the local variables from each frame will
be captured as object representations into the FrameSummary.
Ntracebacklimitr )maxlenF)r^ r] )getattrr itertoolsislice collectionsdequesetf_code co_filenameco_nameaddrt lazycache f_globalsf_localsappendr
checkcacher? )
klass frame_genr$ r~ r resultfnamesrQ rZ corY r[ r r r r! r( R s8
zStackSummary.extractc C sL t }|D ] }t|tr|| q|\}}}}|t||||d q|S )z
Create a StackSummary object from a supplied list of
FrameSummary objects or old-style list of tuples.
)r? )r rg r r )r a_listr framerY rZ r[ r? r r r! r s
zStackSummary.from_listc
C sd g }d}d}d}d}| D ]}|du s)||j ks)|du s)||jks)|du s)||jkrN|tkrC|t8 }|d| d|dkr=dnd d |j }|j}|j}d}|d7 }|tkrWq g }|d |j |j|j |jrt|d
|j |jrt |j
D ]\}} |d j|| d q~|d | q |tkr|t8 }|d| d|dkrdnd d |S )
a Format the stack ready for printing.
Returns a list of strings ready for printing. Each string in the
resulting list corresponds to a single frame from the stack.
Each string ends in a newline; the strings may contain internal
newlines as well, for those items with source text lines.
For long sequences of the same frame and line, the first few
repetitions are shown, followed by a summary line stating the exact
number of further repetitions.
Nr z [Previous line repeated z
more time sr z]
z File "{}", line {}, in {}
{}
z {name} = {value}
)r[ r7 ) rY rZ r[ _RECURSIVE_CUTOFFr r r? rv r] sortedrd rJ )
r, r last_file last_line last_namecountr rowr[ r7 r r r! r sR zStackSummary.format)r/ r0 r1 rw classmethodr( r r r r r r! r O s /
r c @ sh e Zd ZdZddddddddZedd Zd
d Zd d
Zdd Z dd Z
dd Z ddddZ dS )r a An exception ready for rendering.
The traceback module captures enough attributes from the original exception
to this intermediary form to ensure that no references are held, while
still being able to fully print or format it.
Use `from_exception` to create TracebackException instances from exception
objects, or the constructor to create TracebackException instances from
individual components.
- :attr:`__cause__` A TracebackException of the original *__cause__*.
- :attr:`__context__` A TracebackException of the original *__context__*.
- :attr:`__suppress_context__` The *__suppress_context__* value from the
original exception.
- :attr:`stack` A `StackSummary` representing the traceback.
- :attr:`exc_type` The class of the original traceback.
- :attr:`filename` For syntax errors - the filename where the error
occurred.
- :attr:`lineno` For syntax errors - the linenumber where the error
occurred.
- :attr:`end_lineno` For syntax errors - the end linenumber where the error
occurred. Can be `None` if not present.
- :attr:`text` For syntax errors - the text where the error
occurred.
- :attr:`offset` For syntax errors - the offset into the text where the
error occurred.
- :attr:`end_offset` For syntax errors - the end offset into the text where
the error occurred. Can be `None` if not present.
- :attr:`msg` For syntax errors - the compiler error message.
NTF)r$ r~ r r: _seenc C s |d u} |d u r t }|t| tjt||||d| _|| _t|| _ |r]t
|t r]|j | _ |j
}
|
d ur ecause need_contextcontextr r r! re s
zTracebackException.__init__c O s | t |||jg|R i |S )z.Create a TracebackException from an exception.)r= r5 )clsr6 argskwargsr r r! from_exception9 s z!TracebackException.from_exceptionc C s | j D ]}|j qdS )z7Private API. force all lines in the stack to be loaded.N)rS r? )r, r r r r! r > s
z TracebackException._load_linesc C s t |tr | j|jkS tS rf )rg r __dict__ri rj r r r! rl C s
zTracebackException.__eq__c C s | j S rf )r r+ r r r! __str__H s zTracebackException.__str__c c s | j du rtd| jV dS | j j}| j j}|dvr(t|ts"d}|d | }t| j ts7t|| jV dS | |E dH dS )a Format the exception part of the traceback.
The return value is a generator of strings, each ending in a newline.
Normally, the generator emits a single string; however, for
SyntaxError exceptions, it emits several lines that (when
printed) display detailed information about where the syntax
error occurred.
The message indicating which exception occurred is always the last
string in the output.
N)__main__builtinsz .)
r rD r r1 r0 rg rE r r _format_syntax_error)r, stypesmodr r r! r K s
z(TracebackException.format_exception_onlyc
c s, d}| j durd| jpd| j V n | jdur d| j}| j}|dur|d}|d}t|t| }d|V | jdur| j}| jd vrN| jn|}||ksX|d
kr\|d }|d | } |d | }
| d krd
d |d| D } dd | d|
| d V | j
pd} d|| |V dS )z0Format SyntaxError exceptions (internal helper).r Nz File "{}", line {}
zz ({})
z
r > r Nr r c s s | ] }| r
|nd V qdS ) N)isspace)r` cr r r! s z:TracebackException._format_syntax_error..z {}{}^zz {}: {}{}
) rZ r rY r rstriplstriplenr r rJ r )
r, r filename_suffixr rtextltextspacesr r colno end_colno
caretspacer r r r! r h s4
z'TracebackException._format_syntax_errorr; c c s g }| }|r;|r0|j durt}|j }n|jdur"|js"t}|j}nd}d}|||f |}n |d|f d}|st|D ] \}}|durJ|V |jrXdV |j E dH | E dH q?dS )a Format the exception.
If chain is not *True*, *__cause__* and *__context__* will not be formatted.
The return value is a generator of strings, each ending in a newline and
some containing internal newlines. `print_exception` is a wrapper around
this method which just prints the lines to a file.
The message indicating which exception occurred is always the last
string in the output.
Nz#Traceback (most recent call last):
)
r _cause_messager r _context_messager reversedrS r r )r, r< outputr6 chained_msg chained_excr r r r! r s8
zTracebackException.format)
r/ r0 r1 rw re r r r rl r r r r r r r r! r s P
$r rf r2 )NNT)NT)NNN)#rw r r rt r __all__r" r r r r r r r) r3 r8 r r r rD rA r r
r r
r r r r r r r r@ r r r r r r! sP
B
z