python difflib comparant des fichiers

Je suis en train d'utiliser difflib pour produire diff pour les deux fichiers texte contenant des tweets. Voici le code:

#!/usr/bin/env python

# difflib_test

import difflib

file1 = open('/home/saad/Code/test/new_tweets', 'r')
file2 = open('/home/saad/PTITVProgs', 'r')

diff = difflib.context_diff(file1.readlines(), file2.readlines())
delta = ''.join(diff)
print delta

Ici est la PTITVProgs fichier texte:

Watch PTI on April 6th (7) Dr Israr Shah at 10PM on Business Plus in "Talking Policy". Rgds #PTI
CORRECTION!! Watch PTI on April 6th (5) @Asad_Umar  at 8PM on ARY News. Rgds #PTI
Watch PTI on April 6th (5) @Asad_Umar  at 8PM on AAJ News (6) PTI vs PMLN at 8PM on NewsOne. Rgds #PTI
Watch PTI on April 6th (5) Asad Umar at 8PM on AAJ News (6) PTI vs PMLN at 8PM on NewsOne. Rgds #PTI
Watch PTI on April 6th (5) Waleed Iqbal at 8PM on Channel 5. Rgds #PTI
Watch PTI on April 6th (3) Dr Israr Shah at 10PM on PTV News. Rgds #PTI
Watch PTI on April 6th (4) Javed hashmi at 1PM on PTV News. Rgds #PTI
Watch PTI on April 6th (3) Imran Alvi at 1PM on AAJ News. Rgds #PTI
Watch PTI on April 6th (1) Dr @ArifAlvi, Andleeb Abbas and Ehtisham Ameer at 11PM on ARY News (2) Hamid Khan at 10PM on ATV. Rgds #PTI
Watch PTI on April 5th (1) Farooq Amjad Meer at 10:45PM on Dunya News. Rgds #PTI
Watch PTI on April 4th (4) Faisal Khan at 8PM on PTV News. Rgds #PTI
@FaisalJavedKhan
Watch PTI on April 4th (3) Faisal Khan at 11PM on ATV. Rgds #PTI
@FaisalJavedKhan
Watch PTI on April 4th (1) Dr Israr Shah at 8PM on Waqt News (2) Dr Arif Alvi at 9PM on PTV World. Rgds #PTI
@ArifAlvi
Watch PTI on April 3rd (12) Abrar ul Haq on 10PM on Dawn News (13) Shabbir Sial at 10PM on Channel5. Rgds #PTI
Watch PTI on April 3rd (11) Sadaqat Abbasi on 8PM on RohiTV. Rgds #PTI
Watch PTI on April 3rd (10) Dr Zarqa and Andleeb Abbas on 8PM on Waqt News. Rgds #PTI
Watch PTI on April 3rd (9) Fauzia Kasuri at 8PM on Din News. Rgds #PTI
Watch PTI on April 3rd (8) Mehmood Rasheed at 8PM on ARY News. Rgds #PTI
Watch PTI on April 3rd (7) Israr Abbasi (Repeat on Arp 4th) at 1:20AM and 1PM on Vibe TV. Rgds #PTI
Watch PTI on April 3rd (5) Rao Fahad at 9PM on Express News (6) Dr Seems Zia at 10:30PM on Health TV. Rgds #PTI

Ici est la new_tweets fichier texte:

Watch PTI on April 7th (3) Malaika Reza at 8PM on AAJ News (4) Shah Mehmood Qureshi at 8PM on Geo News. Rgds #PTI
Watch PTI on April 7th (2) Chairman IMRAN KHAN at 10PM on PTV News in News Night with Sadia Afzal, Rpt: 2AM, 2PM. Rgds #PTI
@ImranKhanPTI
Watch PTI on April 7th (1) Dr Waseem Shahzad NOW at 6PM on PTV News. Rgds #PTI
Watch PTI on April 6th (7) Dr Israr Shah at 10PM on Business Plus in "Talking Policy". Rgds #PTI
CORRECTION!! Watch PTI on April 6th (5) @Asad_Umar  at 8PM on ARY News. Rgds #PTI
Watch PTI on April 6th (5) @Asad_Umar  at 8PM on AAJ News (6) PTI vs PMLN at 8PM on NewsOne. Rgds #PTI
Watch PTI on April 6th (5) Asad Umar at 8PM on AAJ News (6) PTI vs PMLN at 8PM on NewsOne. Rgds #PTI
Watch PTI on April 6th (5) Waleed Iqbal at 8PM on Channel 5. Rgds #PTI
Watch PTI on April 6th (3) Dr Israr Shah at 10PM on PTV News. Rgds #PTI
Watch PTI on April 6th (4) Javed hashmi at 1PM on PTV News. Rgds #PTI
Watch PTI on April 6th (3) Imran Alvi at 1PM on AAJ News. Rgds #PTI
Watch PTI on April 6th (1) Dr @ArifAlvi, Andleeb Abbas and Ehtisham Ameer at 11PM on ARY News (2) Hamid Khan at 10PM on ATV. Rgds #PTI
Watch PTI on April 5th (1) Farooq Amjad Meer at 10:45PM on Dunya News. Rgds #PTI
Watch PTI on April 4th (4) Faisal Khan at 8PM on PTV News. Rgds #PTI
@FaisalJavedKhan
Watch PTI on April 4th (3) Faisal Khan at 11PM on ATV. Rgds #PTI
@FaisalJavedKhan
Watch PTI on April 4th (1) Dr Israr Shah at 8PM on Waqt News (2) Dr Arif Alvi at 9PM on PTV World. Rgds #PTI
@ArifAlvi
Watch PTI on April 3rd (12) Abrar ul Haq on 10PM on Dawn News (13) Shabbir Sial at 10PM on Channel5. Rgds #PTI
Watch PTI on April 3rd (11) Sadaqat Abbasi on 8PM on RohiTV. Rgds #PTI
Watch PTI on April 3rd (10) Dr Zarqa and Andleeb Abbas on 8PM on Waqt News. Rgds #PTI
Watch PTI on April 3rd (9) Fauzia Kasuri at 8PM on Din News. Rgds #PTI

Voici le diff que je reçois de la programme:

*** 
--- 
***************
*** 1,7 ****
- Watch PTI on April 7th (3) Malaika Reza at 8PM on AAJ News (4) Shah Mehmood Qureshi at 8PM on Geo News. Rgds #PTI
- Watch PTI on April 7th (2) Chairman IMRAN KHAN at 10PM on PTV News in News Night with Sadia Afzal, Rpt: 2AM, 2PM. Rgds #PTI
- @ImranKhanPTI
- Watch PTI on April 7th (1) Dr Waseem Shahzad NOW at 6PM on PTV News. Rgds #PTI
Watch PTI on April 6th (7) Dr Israr Shah at 10PM on Business Plus in "Talking Policy". Rgds #PTI
CORRECTION!! Watch PTI on April 6th (5) @Asad_Umar  at 8PM on ARY News. Rgds #PTI
Watch PTI on April 6th (5) @Asad_Umar  at 8PM on AAJ News (6) PTI vs PMLN at 8PM on NewsOne. Rgds #PTI
--- 1,3 ----
***************
*** 21,24 ****
Watch PTI on April 3rd (12) Abrar ul Haq on 10PM on Dawn News (13) Shabbir Sial at 10PM on Channel5. Rgds #PTI
Watch PTI on April 3rd (11) Sadaqat Abbasi on 8PM on RohiTV. Rgds #PTI
Watch PTI on April 3rd (10) Dr Zarqa and Andleeb Abbas on 8PM on Waqt News. Rgds #PTI
! Watch PTI on April 3rd (9) Fauzia Kasuri at 8PM on Din News. Rgds #PTI--- 17,23 ----
Watch PTI on April 3rd (12) Abrar ul Haq on 10PM on Dawn News (13) Shabbir Sial at 10PM on Channel5. Rgds #PTI
Watch PTI on April 3rd (11) Sadaqat Abbasi on 8PM on RohiTV. Rgds #PTI
Watch PTI on April 3rd (10) Dr Zarqa and Andleeb Abbas on 8PM on Waqt News. Rgds #PTI
! Watch PTI on April 3rd (9) Fauzia Kasuri at 8PM on Din News. Rgds #PTI
! Watch PTI on April 3rd (8) Mehmood Rasheed at 8PM on ARY News. Rgds #PTI
! Watch PTI on April 3rd (7) Israr Abbasi (Repeat on Arp 4th) at 1:20AM and 1PM on Vibe TV. Rgds #PTI
! Watch PTI on April 3rd (5) Rao Fahad at 9PM on Express News (6) Dr Seems Zia at 10:30PM on Health TV. Rgds #PTI

Comme vous pouvez le voir rapidement en comparant les deux fichiers source (PTITVProgs et new_tweets) que la différence entre eux sont les 3 tweets qui ont été le 7 avril et 3 tweets sur le 3 avril.

Je veux juste les lignes dans new_tweets qui ne sont pas dans PTITVProgs à apparaître dans le diff.

Mais il jette un tas de texte que je ne veux pas voir. Je ne sais pas ce *** 1,7*** et *** 1,3*** dans le diff de sortie de stand pour...? Quelle est la bonne façon d'obtenir seulement les lignes modifiées?

source d'informationauteur koogee

  1. 21

    Juste analyse la sortie de diff comme ceci (changement ''' + ' si nécessaire):

    #!/usr/bin/env python
# difflib_test
import difflib
file1 = open('/home/saad/Code/test/new_tweets', 'r')
file2 = open('/home/saad/PTITVProgs', 'r')
diff = difflib.ndiff(file1.readlines(), file2.readlines())
delta = ''.join(x[2:] for x in diff if x.startswith('- '))
print delta
  2. 15

    Il existe plusieurs diff styles et différentes fonctions existent pour eux dans le difflib de la bibliothèque. unified_diffndiff et context_diff.

    Si vous ne voulez pas le numéro de la ligne des résumés, ndiff fonction donne une Différence de style delta:

    import difflib
f1 = '''1
2
3
4
5'''
f2 = '''1
3
4
5
6'''
diff = difflib.ndiff(f1,f2)
for l in diff:
print(l)

    De sortie:

      1
- 2          
3          
4          
5   
+ 6

    EDIT:

    Vous pouvez également analyser les diff pour extraire uniquement les modifications si c'est ce que vous voulez:

    >>>changes = [l for l in diff if l.startswith('+ ') or l.startswith('- ')]
>>>for c in changes:
print(c)
>>>
- 2
+ 6