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Improve the docstring further

This commit is contained in:
Floris Bruynooghe 2014-08-23 12:10:16 +02:00
parent e7ed45a5d4
commit 79c2a47985
1 changed files with 6 additions and 3 deletions
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9
_pytest/assertion/rewrite.py
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@ -327,12 +327,15 @@ def rewrite_asserts(mod):
def _saferepr(obj):
"""Get a safe repr of an object for assertion error messages
"""Get a safe repr of an object for assertion error messages.
The assertion formatting (util.format_explanation()) requires
newlines to be escaped since they are a special character for it.
But py.io.saferepr allows newlines, so we need to escape them
here.
Normally assertion.util.format_explanation() does this but for a
custom repr it is possible to contain one of the special escape
sequences, especially '\n{' and '\n}' are likely to be present in
JSON reprs.
"""
repr = py.io.saferepr(obj)
if py.builtin._istext(repr):