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iT` @ s d Z ddlZddlZddlZddlZg dZd4ddZdd Zd5dd Zd6d
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d9ddZdd Zdd Zdd Zd:dd Zd;d d Zdd#d$Zd?d%d&Zd'd( ZG d)d* d*Zd+d, Zd-d. Zd/Z G d0d1 d1e Z G d2d3 d3Z dS )@z@Extract, format and print information about Python stack traces. N)
extract_stack
extract_tbformat_exceptionformat_exception_only format_list format_stack format_tb print_exc
format_excprint_exception
print_last print_stackprint_tb clear_frames FrameSummary StackSummaryTracebackException
walk_stackwalk_tbc C s4 |du rt j}t| D ]}t||dd q dS )zyPrint the list of tuples as returned by extract_tb() or
extract_stack() as a formatted stack trace to the given file.N fileend)sysstderrr from_listformatprint)extracted_listr item r !/usr/lib64/python3.9/traceback.py
print_list s r" c C s t | S )a Format a list of tuples or FrameSummary objects for printing.
Given a list of tuples or FrameSummary objects as returned by
extract_tb() or extract_stack(), return a list of strings ready
for printing.
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same index in the argument list. Each string ends in a newline;
the strings may contain internal newlines as well, for those items
whose source text line is not None.
)r r r )r r r r! r s r c C s t t| |d|d dS )a Print up to 'limit' stack trace entries from the traceback 'tb'.
If 'limit' is omitted or None, all entries are printed. If 'file'
is omitted or None, the output goes to sys.stderr; otherwise
'file' should be an open file or file-like object with a write()
method.
limitr N)r" r )tbr$ r r r r! r - s r c C s t | |d S )z5A shorthand for 'format_list(extract_tb(tb, limit))'.r# )r r r& r$ r r r! r 7 s r c C s t jt| |dS )a#
Return a StackSummary object representing a list of
pre-processed entries from traceback.
This is useful for alternate formatting of stack traces. If
'limit' is omitted or None, all entries are extracted. A
pre-processed stack trace entry is a FrameSummary object
containing attributes filename, lineno, name, and line
representing the information that is usually printed for a stack
trace. The line is a string with leading and trailing
whitespace stripped; if the source is not available it is None.
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Tc C sB |du rt j}tt||||dj|dD ]}t||dd q*dS )a Print exception up to 'limit' stack trace entries from 'tb' to 'file'.
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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.
Nr# chainr r )r r r typer r )etypevaluer& r$ r r* liner r r! r W s
r c C s t tt||||dj|dS )az Format a stack trace and the exception information.
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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().
r# r) )listr r+ r )r, r- r& r$ r* r r r! r l s
r c C s t t| |d S )a Format the exception part of a traceback.
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sys.last_type and sys.last_value. 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.
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string in the list.
N)r/ r r )r, r- r r r! r | s r c C s. t |}|d u s|s d| }n d| |f }|S )Nz%s
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r0 c C s t t | ||d dS )z>Shorthand for 'print_exception(*sys.exc_info(), limit, file)'.r$ r r* N)r r exc_infor5 r r r! r s r c C s d tt | |dS )z%Like print_exc() but return a string.r r$ r* )joinr r r6 r7 r r r! r
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c C s. t tdstdttjtjtj| || dS )znThis is a shorthand for 'print_exception(sys.last_type,
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r c C s* | du rt j} tt| |d|d dS )zPrint a stack trace from its invocation point.
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stack frame at which to start. The optional 'limit' and 'file'
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Nr# r% )r _getframef_backr" r )fr$ r r r r! r
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c C s" | du rt j} tt| |dS )z5Shorthand for 'format_list(extract_stack(f, limit))'.Nr# )r r> r? r r )r@ r$ r r r! r s
r c C s0 | du rt 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 r> r? r r( r reverse)r@ r$ stackr r r! r s
r c C s6 | dur2z| j W n ty( Y n0 | j} q 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
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e dd Z dS )r a, A single frame from a traceback.
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active when the frame was captured.
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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_linerL r. c C sB || _ || _|| _|| _|r"| j |r8dd | D nd| _dS )a Construct a FrameSummary.
:param lookup_line: If True, `linecache` is consulted for the source
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:param locals: If supplied the frame locals, which will be captured as
object representations.
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the linecache.
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z)FrameSummary.__init__..N)rH rI rJ rK r. itemsrL )selfrH rI rJ rM rL r. r r r! __init__ s zFrameSummary.__init__c C s` t |tr:| j|jko8| j|jko8| j|jko8| j|jkS t |tr\| j| j| j| jf|kS tS N)
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zFrameSummary.__eq__c C s | j | j| j| jf| S rW )rH rI rJ r. )rU posr r r! __getitem__ s zFrameSummary.__getitem__c C s t | j| j| j| jgS rW )iterrH rI rJ r. rU r r r! __iter__ s zFrameSummary.__iter__c C s dj | j| j| jdS )Nz7)rH rI rJ )r rH rI rJ ra r r r! __repr__ s zFrameSummary.__repr__c C s dS )N r ra r r r! __len__ s zFrameSummary.__len__c C s& | j d u r t| j| j | _ | j S rW )rK linecachegetlinerH rI stripra r r r! r. s
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__module__ __qualname____doc__ __slots__rV r] r_ rb rc re propertyr. r r r r! r s
r c c s4 | du rt jj} | dur0| | jfV | j} qdS )zWalk a stack yielding the frame and line number for each frame.
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N)r r> r? f_lineno)r@ r r r! r $ s
r c c s" | dur | j | jfV | j} q dS )zWalk a traceback yielding the frame and line number for each frame.
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walk_stack). Usually used with StackSummary.extract.
N)rC tb_linenorF rG r r r! r 1 s r c @ s: e Zd ZdZeddddddZedd Zd
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include.
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otherwise lookup is deferred until the frame is rendered.
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be captured as object representations into the FrameSummary.
Ntracebacklimitr )maxlenF)rM rL )getattrr itertoolsislice collectionsdequesetf_code co_filenameco_nameaddrf lazycache f_globalsf_localsappendr
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)r. )r rX r r )r a_listr framerH rI rJ r. r r r! r q s
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C sn g }d}d}d}d}| D ]}|du sT||j ksT|du sT||jksT|du sT||jkr|tkr|t8 }|d| d|dkr|dnd d |j }|j}|j}d}|d7 }|tkrqg }|d |j |j|j |jr|d
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D ] \}} |d j|| d q |d | q|tkrj|t8 }|d| d|dkr^dnd d |S )
a Format the stack ready for printing.
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resulting list corresponds to a single frame from the stack.
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number of further repetitions.
Nr z [Previous line repeated z
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r c @ sf e Zd ZdZdddddddZedd Zd
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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:`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:`msg` For syntax errors - the compiler error message.
NTFr$ rr rs _seenc C sv |d u rt }|t| d| _z|rd|jd urdt|j|vrdtt|j|j|jj|d||d}nd }|r|jd urt|j|vrtt|j|j|jj|d||d} nd } W n t y d| _d }d } Y n0 || _| | _|r|j
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zTracebackException.__init__c O s | t |||jg|R i |S )z.Create a TracebackException from an exception.)r+ r )clsexcargskwargsr r r! from_exception s z!TracebackException.from_exceptionc C s6 | j D ]
}|j q| jr"| j | jr2| j dS )z7Private API. force all lines in the stack to be loaded.N)rB r. r r r )rU r r r r! r s
z TracebackException._load_linesc C s t |tr| j|jkS tS rW )rX r __dict__rZ r[ r r r! r] % s
zTracebackException.__eq__c C s | j S rW )r ra r r r! __str__* s zTracebackException.__str__c c s~ | j du r td| jV dS | j j}| j j}|dvrNt|tsBd}|d | }t| j tsjt|| jV n| |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.
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string in the output.
N)__main__builtinsz .)
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z'TracebackException._format_syntax_errorr) c c s |r`| j dur*| j j|dE dH tV n*| jdurT| jsT| jj|dE dH tV | jr`dV | jr|dV | j E dH | E dH 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.
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string in the output.
Nr) zXChained exceptions have been truncated to avoid stack overflow in traceback formatting:
z#Traceback (most recent call last):
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