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fb-scrap.py
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fb-scrap.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# A simple Facebook page/post scraper.
#
# usage: fb-scrap [idpage_list.txt] {2018/05/21}
from clipper import parse_fb_json
from csv import reader, QUOTE_MINIMAL
from datetime import datetime
from json import dump as json_dump
from json import load as json_load
from os import chdir, getcwd, makedirs
from os.path import abspath, basename, isdir, isfile
from requests import get
from sys import argv
from time import time, sleep
# script configuration
ATTEMPTS = 3 # to get JSON
SECONDS = 600 # to sleep
GET_POSTS = True # True/False
FILTER_DATE = '' # 'YYYY-MM-DD'
# required for Facebook authentication
TOKEN = ""
def scrap_pages(input_name, str_date=FILTER_DATE, get_posts=GET_POSTS, token=TOKEN, folder='output'):
'''
Writes output JSON from facebook page IDs in a string, list or file.
'''
delimiter = None
page_ids = []
path = abspath(getcwd())
if isfile(input_name):
folder = folder + '/' + input_name.replace('/','_')
print('Reading', input_name, 'file...', end=' ')
# check file header
with open(input_name, 'rt', encoding='utf8') as input_file:
input_reader = reader(input_file)
header = next(input_reader)
# find out delimiter
for i in ['|', '\t', '\\t', ';', ',']:
if i in str(header): # \\t != \t
delimiter = i.replace('\\t','\t')
# read whole file
with open(input_name, 'rt', encoding='utf8') as input_file:
if delimiter:
input_reader = reader(input_file, delimiter=delimiter, quoting=QUOTE_MINIMAL)
header = next(input_reader) # skips first line
for line in input_reader:
try: page_ids.append(line[0])
except Exception as e: print('Warning: line', str(input_reader.line_num) + ',', str(e) + '.')
else: # whole lines
input_reader = reader(input_file)
for line in input_reader:
try: page_ids.append(line[0].replace('\n',''))
except Exception as e: print('Warning: line', str(input_reader.line_num) + ',', str(e) + '.')
elif isinstance(input_name, str):
page_ids = input_name.replace(', ',',').split(',')
len_ids = len(page_ids)
base = 'https://graph.facebook.com/v3.1/'
access_token = "?access_token=%s" % TOKEN
endpoint = "/posts/"
now = 0 # counter
if len_ids > 1:
print(len_ids, 'pages.')
for page_id in page_ids:
output_file = 'page_' + page_id + '.json'
output_folder = abspath(folder)
retry = 0 # stops at 3rd attepmpt
now += 1 # add page ID to counter
# create directory
try: makedirs(output_folder)
except: pass
# change directory
chdir(output_folder)\
if isdir(output_folder)\
else None
print('('+str(now)+'/'+str(len_ids)+')', page_id, end=' ')
while True:
url = base + page_id + endpoint + access_token
retry += 1
sleep(0.5)
if isinstance(ATTEMPTS,int) and retry > ATTEMPTS:
break
try: # get page data from Facebook
output = get(url)
data = output.json()
with open(output_file, 'w') as f:
json_dump(data, f)
if 'data' in data:
break
elif 'error' in data:
if 'message' in data['error']:
print(data['error']['message'])
if 'Application request limit reached' in data['error']['message']:
sleep_seconds(SECONDS)
elif 'was migrated to page ID' in data['error']['message']:
new_page_id = data['error']['message'].split('was migrated to page ID ')[1].split('.')[0]
print('Updated', page_id, 'to', new_page_id, '. Retrying...')
page_id = new_page_id
else: print(data['error'])
else: print('empty')
except Exception as e:
print(str(e))
if get_posts: # requires v2.9 authentication
scrap_posts(output_file, str_date, token)
chdir(path)
def scrap_posts(input_file, str_date=FILTER_DATE, token=TOKEN):
'''
Writes output JSON from facebook post IDs in a string, list or file.
'''
counter = 0
base = 'https://graph.facebook.com/v2.9/'
access_token = "&access_token=%s" % TOKEN
fields = '?fields=id,message,story,from,created_time,shares,'+\
'comments.limit(0).summary(total_count).as(comments),'+\
'reactions.type(LOVE).limit(0).summary(total_count).as(reactions_love),'+\
'reactions.type(WOW).limit(0).summary(total_count).as(reactions_wow),'+\
'reactions.type(HAHA).limit(0).summary(total_count).as(reactions_haha),'+\
'reactions.type(SAD).limit(0).summary(total_count).as(reactions_sad),'+\
'reactions.type(ANGRY).limit(0).summary(total_count).as(reactions_angry),'+\
'reactions.type(LIKE).limit(0).summary(total_count).as(reactions_like)'
with open(input_file) as f:
page_data = json_load(f)
if 'data' in page_data:
try: print('-', len(page_data['data']), 'posts...')
except: print('0 posts'); return
else: print('no data'); return
for post in page_data['data']:
retry = 0
counter += 1
post_id = post['id']
output_file = 'post_'+post_id+'.json'
created_time = post['created_time']
url = base + post_id + fields + access_token
# filter YYYY-MM-DD
if str_date and str_date not in post['created_time']:
continue
print(str(counter), end=' ')
while True:
retry += 1
if isinstance(ATTEMPTS,int) and retry > ATTEMPTS:
break
try: # get post data from Facebook
sleep(0.5)
output = get(url)
if retry > ATTEMPTS:
break
data = output.json()
if 'error' in data:
if 'message' in data['error']:
print(data['error']['message'])
if 'Application request limit reached' in data['error']['message']:
sleep_seconds(SECONDS)
# else: print(data['error'])
else: break
except Exception as e:
print(str(e))
with open(output_file, 'w') as f:
json_dump(data, f)
print('done')
def sleep_seconds(tts):
'''
Sleeps for a given amount of seconds.
'''
ttw = datetime.fromtimestamp(int(time() + tts))
ttw = datetime.strftime(ttw, "%H:%M:%S")
print('sleeping', str(int(tts)) + 's until', ttw + '...')
sleep(tts)
if __name__ == '__main__':
if len(argv) > 1:
input_name = argv[1]
else: quit('usage: fb-scrap [page_id_list.txt] [2018/05/21]')
str_date = FILTER_DATE
if len(argv) > 2:
str_date = argv[2]
scrap_pages(input_name, str_date)