New submission from vincenzo gisondi:
I found an anomaly on identification of changes as Diff Style (^).
There are the tests that i done:
1) First Test (only one character is different)
>>> a = "Hello Vincenzo\n".splitlines(1)
>>> b = "Hello Vincenza\n".splitlines(1)
>>> a
['Hello Vincenzo\n']
>>> b
['Hello Vincenza\n']
>>> diff = difflib.ndiff(a,b)
>>> print(''.join(diff))
- Hello Vincenzo
? ^
+ Hello Vincenza
? ^
2) Second Test (two characters are differents)
>>> a = "Hello Vincenzo\n".splitlines(1)
>>> b = "Hello Vincensa\n".splitlines(1)
>>> a
['Hello Vincenzo\n']
>>> b
['Hello Vincensa\n']
>>> diff = difflib.ndiff(a,b)
>>> print(''.join(diff))
- Hello Vincenzo
? ^^
+ Hello Vincensa
? ^^
3) Third Test (three characters are differents)
>>> a = "Hello Vincenzo\n".splitlines(1)
>>> b = "Helto Bincenza\n".splitlines(1)
>>> a
['Hello Vincenzo\n']
>>> b
['Helto Bincenza\n']
>>> diff = difflib.ndiff(a,b)
>>> print(''.join(diff))
- Hello Vincenzo
? ^ ^ ^
+ Helto Bincenza
? ^ ^ ^
4) Fourth test (four characters are differents -> Anomaly)
>>> a = "Hello Vincenzo\n".splitlines(1)
>>> b = "Halto Bincenza\n".splitlines(1)
>>> a
['Hello Vincenzo\n']
>>> b
['Halto Bincenza\n']
>>> diff = difflib.ndiff(a,b)
>>> print(''.join(diff))
- Hello Vincenzo
+ Halto Bincenza
In this last test I expected 4 "^" characters as in previous tests, like this:
- Hello Vincenzo
? ^ ^ ^ ^
+ Halto Bincenza
? ^ ^ ^ ^
but I have a response completly different. This is a Bug or I did not
understand something :)
Thank you very much for your support.
----------
components: Library (Lib)
messages: 274023
nosy: vincenzo gisondi
priority: normal
severity: normal
status: open
title: Difflib.ndiff (Problem on identification of changes as Diff Style)
type: behavior
versions: Python 2.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue27913>
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