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Download all posts from a Facebook page, in txt or csv
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#Written by Luca Tringali
# The code is described here:
# https://www.codice-sorgente.it/2018/08/facebook-scraping-scaricare-tutti-i-post-delle-pagine-facebook/
#Released under GNU GPL3
#USAGE: python3 ./scrapefb.py https://facebookpageurl/ ./ CSV
#The second argument is the output folder, the third one (in caps) is the format TXT or CSV
import urllib.request
import urllib.parse
import re
import html
import sys
import os
import json
import datetime
import time
from socket import timeout
#useragent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.47 Safari/537.36'
useragent = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36'
def geturl(thisurl):
global useragent
if thisurl == '':
return ''
req = urllib.request.Request(
thisurl,
data=None,
headers={
'User-Agent': useragent
}
)
thishtml = ""
try:
f = urllib.request.urlopen(req,timeout=300)
ft = f.read() #we should stop if this is taking too long
except:
ft = ""
try:
encoding = f.info().get_content_charset()
if encoding == None:
encoding = 'windows-1252'
thishtml = ft.decode(encoding)
except:
try:
thishtml = ft.decode('utf-8', 'backslashreplace')
except:
thishtml = str(ft)
try:
thishtml = html.unescape(thishtml)
except:
thishtml = ""
return thishtml
def scrapefacebook(mypage, output = "./", ascsv = False):
TOSELECT_FB = 'pages_reaction_units'
startposts = "{\"__html\":"
endposts = "]]"
maxresults = 300
towait = 10
lstart = '/pages_reaction_units/more/?page_id='
lending = '&cursor={"card_id":"videos","has_next_page":true}&surface=www_pages_home&unit_count='+str(maxresults)+'&referrer&dpr=1&__user=0&__a=1'
allhtml = geturl(mypage)
try:
start = mypage.index("https://")
end = mypage.index('/',start+8)
fbdomain = mypage[start:end]
indexes = [(m.start(0), m.end(0)) for m in re.finditer(TOSELECT_FB, allhtml[start+1:])]
start = indexes[0][0]
end = allhtml.index('"',start+1)
thislink = allhtml[start:end]
#estrapola page_id
#getting page ID from page source HTML
#https://it-it.facebook.com/pages_reaction_units/more/?page_id=286796408016028&cursor={"card_id":"videos","has_next_page":true}&surface=www_pages_home&unit_count=300&referrer&dpr=1&__user=0&__a=1
start = thislink.index("page_id=")
end = thislink.index('&',start+9)
pageid = thislink[start+8:end]
start = mypage.index("facebook.com")
pagename = mypage[start+12:]
pagename = re.sub(r'[^A-Za-z0-9]',"",pagename)
except:
fbdomain = ""
pageid = ""
fname = output + "fb_" + pagename + ".txt"
if ascsv:
fname = output + "fb_" + pagename + ".csv"
alllinks = []
linksfile = output + "fb_" + pagename + ".tmp"
if os.path.isfile(linksfile):
alllinks = [line.rstrip('\n') for line in open(linksfile, encoding='utf-8')]
timelineiter = 0
ripristino = False
active = True
while active:
link = fbdomain + lstart + pageid + lending
if timelineiter == 0 and len(alllinks)>0:
link = alllinks[len(alllinks)-1]
ripristino = True
with open(linksfile, "a", encoding='utf-8') as lfile:
lfile.write(link+'\n')
print(link)
newhtml = geturl(link)
try:
start = newhtml.index(startposts)
end = newhtml.index(endposts)
postshtml = newhtml[start:end]
#eliminazione caratteri unicode surrogati
#deleting unicode surrogates
postshtml = postshtml.encode("utf-8").decode('unicode-escape')
postshtml = re.sub(r'[\uD800-\uDFFF]',"",postshtml)
#dividi per data-utime e tieni solo quello che sta tra <p> e </p>
#splitting posts by their Unitx Time (data-utime) and keeping only text inside <p> </p> tags
postsarray = re.split('data-utime', postshtml)
timearray = []
for i in range(len(postsarray)):
try:
start = postsarray[i].index('"')
end = postsarray[i].index('"',start+2)
utime = postsarray[i][start:end]
utime = re.sub(r'[^0-9]',"",utime)
utimei = int(utime)
except:
utimei = 0
thistime = datetime.datetime.utcfromtimestamp(utimei).strftime('%Y-%m-%d %H:%M:%S')
timearray.append(thistime)
indexes = [(m.start(0), m.end(0)) for m in re.finditer('<p>(.*?)<\\\\/p>', postsarray[i])]
thispost = ""
for n in range(len(indexes)):
start = indexes[n][0]
end = indexes[n][1]
thispost = thispost + postsarray[i][start:end]
#pulisco i tag non necessari
#cleaning unnecessary tags
postsarray[i] = re.sub(r'<.*?>',"",thispost)
#tolgo gli slash non necessari
#cleaning unnecessary slashes
postsarray[i] = re.sub('\\\\/',"/",postsarray[i])
print(postsarray)
try:
maxresults = 8
start = newhtml.index('&cursor=')
end = newhtml.index("&unit_count=", start+1)
lending = newhtml[start:end]
#eliminazione caratteri unicode surrogati
#again, cleaning unicode surrogates
lending = lending.encode("utf-8").decode('unicode-escape')
lending = re.sub(r'[\uD800-\uDFFF]',"",lending)
lending = urllib.parse.unquote(lending)
lending = lending + '&unit_count='+str(maxresults)+'&dpr=1&__user=0&__a=1'
#https://it-it.facebook.com/pages_reaction_units/more/?page_id=286796408016028&cursor={"timeline_cursor":"timeline_unit:1:00000000001528624041:04611686018427387904:09223372036854775793:04611686018427387904","timeline_section_cursor":{},"has_next_page":true}&surface=www_pages_home&unit_count=8&dpr=1&__user=0&__a=1
except:
active = False
except:
postsarray = []
timearray = []
#salvo il risultato in un file: se è il primo ciclo creo il file, altrimenti aggiungo
#saving results in a file, creating a new one or appending to an existing one if needed
if fname != "":
postsfile = ""
for i in range(len(postsarray)):
if postsarray[i] != "":
if ascsv:
postsfile = postsfile + timearray[i] + "\t"
postsfile = postsfile + postsarray[i] + "\n"
if timelineiter == 0 and ripristino==False:
text_file = open(fname, "w", encoding='utf-8')
text_file.write(postsfile)
text_file.close()
else:
with open(fname, "a", encoding='utf-8') as myfile:
myfile.write(postsfile)
timelineiter = timelineiter +1
time.sleep(towait)
if __name__ == '__main__':
START_PAGE = "https://it-it.facebook.com/chiesapastafarianaitaliana/"
if len(sys.argv)>1:
START_PAGE = sys.argv[1]
if "facebook.com" in START_PAGE:
output = "./"
if len(sys.argv)>2:
output = sys.argv[2]
ascsv = False
if len(sys.argv)>3:
if sys.argv[3] == "CSV":
ascsv = True
scrapefacebook(START_PAGE, output, ascsv)
@overide666

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@overide666 overide666 commented Nov 9, 2020

Hello Luca,

i have few question for you about this code, it is possible to contact me please on skype my skype is : jmartinacn
i will pay for answer to my questions.

@zorbaproject

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@zorbaproject zorbaproject commented Nov 10, 2020

I do not accept payment for this work, if you have some questions you might find answers in this post: https://www.codice-sorgente.it/2018/08/facebook-scraping-scaricare-tutti-i-post-delle-pagine-facebook/ it's in Italian, but automatic translation should help you get some clues. If you are trying to use the script, take note that Facebook changed its queries and the script is not working anymore. I'll try to fix it sooner or later.

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@overide666 overide666 commented Nov 10, 2020

I do not accept payment for this work, if you have some questions you might find answers in this post: https://www.codice-sorgente.it/2018/08/facebook-scraping-scaricare-tutti-i-post-delle-pagine-facebook/ it's in Italian, but automatic translation should help you get some clues. If you are trying to use the script, take note that Facebook changed its queries and the script is not working anymore. I'll try to fix it sooner or later.

No i want you to collaborate in my project ! your experience with facebook can really help us with our project i want to pay you as expert advisor.

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@overide666 overide666 commented Nov 10, 2020

No i want you to collaborate in my project ! your experience with facebook can really help us with our project i want to pay you as expert advisor.

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