Getting sqlite3.OperationalError: unrecognized token: ":" when calling DB Update - python-3.x

Question

Getting an error when trying to update a column in the db in my pipelines file, set_data_update function.
What I am trying to do is use the function get_data to return the url and the price, for each url that is returned, call the set_data_update function, where I will swap the existing new_price into old_price, and then put
the new scraped price into new_price. It seems like my call to set_data_update in get_data always runs twice. It should run once, because at the moment I only have one row in the DB for the 2nd URL -
"https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10".
Also I see an error in the traceback
sqlite3.OperationalError: unrecognized token: ":"
products.json
{
"itemdata": [
{ "url": "https://www.amazon.com/dp/B07GWKT87L/?`coliid=I36XKNB8MLE3&colid=KRASGH7290D0&psc=0&ref_=lv_ov_lig_dp_it#customerReview",`
"title": "coffee_maker_black_and_decker",
"name": "Cobi Maguire",
"email": "cobi#noemail.com"
},
{ "url": "https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10",
"title": "coffee_maker_hamilton_beach",
"name": "Ryan Murphy",
"email": "ryan#noemail.com"
}
]
}
Error Traceback- Traceback (most recent call last):
(price_monitor) C:\Users\hassy\Documents\python_venv\price_monitor\price_monitor>scrapy crawl price_monitor
2019-06-15 17:00:10 [scrapy.utils.log] INFO: Scrapy 1.6.0 started (bot: price_monitor)
2019-06-15 17:00:10 [scrapy.utils.log] INFO: Versions: lxml 4.3.3.0, libxml2 2.9.5, cssselect 1.0.3, parsel 1.5.1, w3lib 1.20.0, Twisted 19.2.0, Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 16:07:46) [MSC v.1900 32 bit (Intel)], pyOpenSSL 19.0.0 (OpenSSL 1.1.1b 26 Feb 2019), cryptography 2.6.1, Platform Windows-10-10.0.17134-SP0
2019-06-15 17:00:10 [scrapy.crawler] INFO: Overridden settings: {'BOT_NAME': 'price_monitor', 'NEWSPIDER_MODULE': 'price_monitor.spiders', 'ROBOTSTXT_OBEY': True, 'SPIDER_MODULES': ['price_monitor.spiders'], 'USER_AGENT': 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36'}
2019-06-15 17:00:10 [scrapy.extensions.telnet] INFO: Telnet Password: 3c0578dfed20521c
2019-06-15 17:00:10 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.logstats.LogStats']
2019-06-15 17:00:10 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
'scrapy.downloadermiddlewares.retry.RetryMiddleware',
'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
'scrapy.downloadermiddlewares.stats.DownloaderStats']
2019-06-15 17:00:10 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
'scrapy.spidermiddlewares.referer.RefererMiddleware',
'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
'scrapy.spidermiddlewares.depth.DepthMiddleware']
2019-06-15 17:00:10 [scrapy.middleware] INFO: Enabled item pipelines:
['price_monitor.pipelines.PriceMonitorPipeline']
2019-06-15 17:00:10 [scrapy.core.engine] INFO: Spider opened
2019-06-15 17:00:10 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2019-06-15 17:00:10 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2019-06-15 17:00:11 [scrapy.core.engine] DEBUG: Crawled (200) https://www.amazon.com/robots.txt> (referer: None)
2019-06-15 17:00:11 [scrapy.downloadermiddlewares.redirect] DEBUG: Redirecting (301) to https://www.amazon.com/BLACK-DECKER-CM4202S-Programmable-Coffeemaker/dp/B07GWKT87L> from https://www.amazon.com/dp/B07GWKT87L/?coliid=I36XKNB8MLE3&colid=KRASGH7290D0&psc=0&ref_=lv_ov_lig_dp_it#customerReview>
2019-06-15 17:00:11 [scrapy.downloadermiddlewares.redirect] DEBUG: Redirecting (301) to https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB> from https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10>
2019-06-15 17:00:12 [scrapy.core.engine] DEBUG: Crawled (200) https://www.amazon.com/BLACK-DECKER-CM4202S-Programmable-Coffeemaker/dp/B07GWKT87L> (referer: None)
2019-06-15 17:00:12 [scrapy.core.engine] DEBUG: Crawled (200) https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB> (referer: None)
Printing rows
('https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10', '$37.99')
calling func
2019-06-15 17:00:12 [scrapy.core.scraper] ERROR: Error processing {'email': 'ryan#noemail.com',
'name': 'Ryan Murphy',
'price': '$49.99',
'title': 'BLACK+DECKER CM4202S Select-A-Size Easy Dial Programmable '
'Coffeemaker, Extra Large 80 ounce Capacity, Stainless Steel',
'url': 'h'}
Traceback (most recent call last):
File "c:\users\hassy\documents\python_venv\price_monitor\lib\site-packages\twisted\internet\defer.py", line 654, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 37, in process_item
self.get_data(item)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 60, in get_data
self.set_data_update(item, url, new_price)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 88, in set_data_update
{'old_price': old_price, 'new_price': item['price']})
sqlite3.OperationalError: unrecognized token: ":"
Printing rows
('https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10', '$37.99')
calling func
2019-06-15 17:00:12 [scrapy.core.scraper] ERROR: Error processing {'email': 'ryan#noemail.com',
'name': 'Ryan Murphy',
'price': '$34.99',
'title': 'Hamilton Beach 46310 Programmable Coffee Maker, 12 Cups, Black',
'url': 'h'}
Traceback (most recent call last):
File "c:\users\hassy\documents\python_venv\price_monitor\lib\site-packages\twisted\internet\defer.py", line 654, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 37, in process_item
self.get_data(item)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 60, in get_data
self.set_data_update(item, url, new_price)
File "c:\users\hassy\documents\python_venv\price_monitor\price_monitor\pipelines.py", line 88, in set_data_update
{'old_price': old_price, 'new_price': item['price']})
sqlite3.OperationalError: unrecognized token: ":"
2019-06-15 17:00:12 [scrapy.core.engine] INFO: Closing spider (finished)
2019-06-15 17:00:12 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 1888,
'downloader/request_count': 5,
'downloader/request_method_count/GET': 5,
'downloader/response_bytes': 261495,
'downloader/response_count': 5,
'downloader/response_status_count/200': 3,
'downloader/response_status_count/301': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2019, 6, 15, 21, 0, 12, 534906),
'log_count/DEBUG': 5,
'log_count/ERROR': 2,
'log_count/INFO': 9,
'response_received_count': 3,
'robotstxt/request_count': 1,
'robotstxt/response_count': 1,
'robotstxt/response_status_count/200': 1,
'scheduler/dequeued': 4,
'scheduler/dequeued/memory': 4,
'scheduler/enqueued': 4,
'scheduler/enqueued/memory': 4,
'start_time': datetime.datetime(2019, 6, 15, 21, 0, 10, 799145)}
2019-06-15 17:00:12 [scrapy.core.engine] INFO: Spider closed (finished)
(price_monitor) C:\Users\hassy\Documents\python_venv\price_monitor\price_monitor>
pipelines.py
import sqlite3
class PriceMonitorPipeline(object):
def __init__(self):
self.create_connection()
self.create_table()
def create_connection(self):
self.conn = sqlite3.connect("price_monitor.db")
self.curr = self.conn.cursor()
def process_item(self, item, spider):
# self.store_data(item)
print("printing items")
print(item['title'])
print(item['price'])
self.get_data(item)
return item
def get_data(self, item):
""" Check if the row already exists for this url """
rows = 0
url = ''
new_price = ''
self.rows = rows
self.url = url
self.new_price = new_price
self.curr.execute("""select url, new_price from price_monitor WHERE url =:url""",
{'url': item['url']})
rows = self.curr.fetchone()
print("Printing rows")
print(rows)
rows_url = rows[0]
new_price = rows[1]
if rows is not None:
for item['url'] in rows_url:
print("calling func")
self.set_data_update(item, url, new_price)
else:
pass
def set_data_update(self, item, url, new_price):
url = 'https://www.amazon.com/Hamilton-Beach-46310-Programmable-Coffee/dp/B07684BPLB/ref=sr_1_10?keywords=coffee+maker&qid=1559098604&s=home-garden&sr=1-10'
old_price = new_price
price = item['price']
print("printing old price")
print(old_price)
print("New Price".format(item['price']))
self.curr.execute("""update price_monitor SET old_price=: old_price, new_price=: new_price
WHERE url=: url""",
{'old_price': old_price, 'new_price': price})
self.conn.commit()
items.py
import scrapy
class AmazonItem(scrapy.Item):
# define the fields for your item here like:
# name = scrapy.Field()
url = scrapy.Field()
title = scrapy.Field()
price = scrapy.Field()
name = scrapy.Field()
email = scrapy.Field()
Spider
import scrapy
import json
import sys
from ..items import AmazonItem
class MySpider(scrapy.Spider):
name = 'price_monitor'
newlist = []
start_urls = []
itemdatalist = []
with open('C:\\Users\\hassy\\Documents\\python_venv\\price_monitor\\price_monitor\\products.json') as f:
data = json.load(f)
itemdatalist = data['itemdata']
for item in itemdatalist:
start_urls.append(item['url'])
def start_requests(self):
for item in MySpider.start_urls:
yield scrapy.Request(url=item, callback=self.parse)
def parse(self, response):
for url in MySpider.start_urls:
scrapeitem = AmazonItem()
title = response.css('span#productTitle::text').extract_first()
title = title.strip()
price = response.css('span#priceblock_ourprice::text').extract_first()
scrapeitem['title'] = title
scrapeitem['price'] = price
for item in MySpider.data['itemdata']:
url = item['url']
name = item['name']
email = item['email']
scrapeitem['url'] = url
scrapeitem['name'] = name
scrapeitem['email'] = email
yield scrapeitem