Parsing infor from scraped files.

Parsing infor from scraped files. - Printable Version

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Parsing infor from scraped files. - Larz60+ - Apr-12-2019

I am trying to get one simple bit of data from several thousand scraped files.
I want to do this using concurrent futures, but am having a bit of an issue
I created a sample which contains just 10 files, for testing and it looks like this:

from concurrent.futures import ProcessPoolExecutor, ThreadPoolExecutor, as_completed
from pathlib import Path
from bs4 import BeautifulSoup
import os


class Scrape3:
    def __init__(self):
        os.chdir(os.path.abspath(os.path.dirname(__file__)))
        filepath = Path('./html')
        citylist = [
            ['Andover'],
            ['Berlin'],
            ['Brooklyn'],
            ['Burlington'], 
            ['Colchester'],
            ['Groton'],
            ['Hartland'],
            ['Kent'],
            ['Manchester'],
            ['Marlborough']
        ]

        for city in citylist:
            city.append(filepath / f'{city[0]}_page1.html')

        # for item in citylist:
        #     print(f'{item[0]}, {item[1].resolve()}')

        self.numpages = []
        # self.test_parse(citylist)
        self.get_numpages(citylist)

        print(f'numpages: {self.numpages}')

    def parse(self, city):
        with city[1].open('rb') as fp:
            page = fp.read()
        soup = BeautifulSoup(page, 'lxml')
        return [city[0], str(soup.find('span', {'class': "paginate-info"}).text.split()[2])]

    def test_parse(self, citylist):
        for city in citylist:
            print(self.parse(city))

    def get_numpages(self, citylist):
        ex = ThreadPoolExecutor(max_workers=10)

        for city in citylist:
            wait_for = [
                ex.submit(self.parse(city))
            ]

            for f in as_completed(wait_for):
                self.numpages.append(f.result)

if __name__ == '__main__':
    Scrape3()

It all appears to function properly until it comes to what's getting stored in self.numpages.
I expected a list of lists, each containing city name and number of pages, but what I get is:

Output:
numpages: [<bound method Future.result of <Future at 0x7f23423502e8 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f23413fe390 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f2340b930b8 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f2340320e80 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f23402fe278 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f2340bbbf60 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f234029d240 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f234022e198 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f234029dcc0 state=finished raised TypeError>>, <bound method Future.result of <Future at 0x7f234034f0f0 state=finished raised TypeError>>]

I am missing something. Don't know what's creating the TypeError. Anybody know what that might be?

I tested the return statement (by running test_parse) and it does what it's supposed to do:

[city[0], str(soup.find('span', {'class': "paginate-info"}).text.split()[2])]

Output:['Andover', '18']
['Berlin', '91']
['Brooklyn', '76']
['Burlington', '59']
['Colchester', '77']
['Groton', '92']
['Hartland', '1']
['Kent', '23']
['Manchester', '278']
['Marlborough', '39']

RE: Parsing infor from scraped files. - Yoriz - Apr-12-2019

Missing the () off f.result

RE: Parsing infor from scraped files. - Larz60+ - Apr-12-2019

I knew it was something stupid, Thanks!