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FEAT: Fast TB....
FEAT: Fast TB. Try to detect when one of the file we are trying to highlight is too big, and fallback on pre-8.0 traceback code, that avoids stack_data. You can configure the limit with: >>> from IPython.core import ultratb >>> ultratb.FAST_THRESHOLD = 200 We are trying to _guess_ whether the traceback we will render is in a file that will require to parse more than FAST_THRESHOLD lines, though it is actually difficult to get this value correctly, so in some case, the slow path may be used, even if files are longer than FAST_THRESHOLD, especially if the crashing code is at the beginning of the file.
Nikita Kniazev - - Load All Authors

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test_exampleip.txt
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Fernando Perez
Added Nose support for IPython doctests and extension modules.
 r1334 =================================
Tests in example form - IPython
=================================
You can write text files with examples that use IPython prompts (as long as you
use the nose ipython doctest plugin), but you can not mix and match prompt
styles in a single file. That is, you either use all ``>>>`` prompts or all
IPython-style prompts. Your test suite *can* have both types, you just need to
put each type of example in a separate. Using IPython prompts, you can paste
directly from your session::
In [5]: s="Hello World"
In [6]: s.upper()
Out[6]: 'HELLO WORLD'
Another example::
In [8]: 1+3
Out[8]: 4
Just like in IPython docstrings, you can use all IPython syntax and features::
Nikita Kniazev
Make OS echo example Windows-compatible
 r26933 In [9]: !echo hello
Fernando Perez
Added Nose support for IPython doctests and extension modules.
 r1334 hello
In [10]: a='hi'
In [11]: !echo $a
hi