字符串关键字在Python中搜索

Question

I am trying to find a keyword in any index in a list and grab that index. I have created a small web scraper using BeautifulSoup4 to scrape fanfiction data.

Since not all fanfictions have genres or characters listed, or even an update date(if they are newly published) all of the info will be in different indexes.

I therefore need to search for, lets say, 'Words: ' and get the index for the whole string, ie 'Words: 1,854' == list[3], or something like that, and save it as the variable words = list[3] to call on later, in order to put it into an excel file later in the correct columns. Here is my current scraper, it is only set to scrape one page at the moment, just lessen the original value of "u" to add more pages to be scraped.

import requests
from bs4 import BeautifulSoup
# import time
# from random import randint
# import xlsxwriter
# import urllib3
# from tinydb import TinyDB, Query

total = 0
u = int(1127)

while u < 2000:
    u = u+1
    url = 'https://www.fanfiction.net/Naruto-Crossovers/1402/0/?&srt=1&lan=1&r=10&p=' + str(u)
    page = requests.get(url)
    soup = BeautifulSoup(page.content, 'html.parser')

    raw = soup.find_all('div', class_='z-indent z-padtop')
    for n in range(len(raw)):
        stats = raw[n]
        info = stats.div
        text = info.text
        formatted = text.split(' - ')
        print(formatted[1:(len(formatted))])

Answer 1

Then the solution could be like this (check function find_keyword )

import requests
from bs4 import BeautifulSoup
# import time
# from random import randint
# import xlsxwriter
# import urllib3
# from tinydb import TinyDB, Query

total = 0
u = int(1127)

results = []
while u < 1130: #decreased u due to testing time
    u = u+1
    url = 'https://www.fanfiction.net/Naruto-Crossovers/1402/0/?&srt=1&lan=1&r=10&p=' + str(u)
    page = requests.get(url)
    soup = BeautifulSoup(page.content, 'html.parser')

    raw = soup.find_all('div', class_='z-indent z-padtop')
    for n in range(len(raw)):
        stats = raw[n]
        info = stats.div
        text = info.text
        formatted = text.split(' - ')
        if formatted:
            results.append(formatted)
print(results)

# function to search for a keyword
def find_keyword(list, keyword):
    results = []
    for element in list:
        value = ''
        for tag in element:
            if tag.find(keyword) >= 0:
                value = tag
        results.append(value)

    return(results)

words_list = find_keyword(results, 'Words') #example of how to search and build list for keyword
print(words_list)

Answer 2

This is the code I came up with, it wordks wonderfully. The find function was essential.

# For later use, searches for keywords and adds them to the specified list
    def assign_stats(keyword, stat_list):
        k = 13
        b = 0
        t = 0
        while k >= 1:
            if t == len(formatted):
                t = 0
            check = formatted[t]
            value = check.find(keyword)
            if value != -1:
                # values = formatted[t]
                stat_list.append(check)
                b = 1
            elif k < 2 and b == 0:
                stat_list.append('')

            t = t + 1
            k = k - 1


    # For later use, searches for keywords and adds them to the specified list
    def assign_stats_status(keyword, stat_list):
        k = 13
        b = 0
        t = 0
        while k >= 1:
            if t == len(formatted):
                t = 0
            check = formatted[t]
            value = check.find(keyword)
            if value != -1:
                # values = formatted[t]
                stat_list.append(check)
                b = 1
            elif k < 2 and b == 0:
                stat_list.append('In-Progress')
            t = t + 1
            k = k - 1


    # For later use, searches for specified indexes of story data lists and adds them to specified list
    def assign_stats_concrete(index, stat_list):
        stat_list.append(formatted[index])

    # Searches for keywords/indexes for the specified story stat lists
    assign_stats('Words', words)
    assign_stats_concrete(2, rating)
    assign_stats('English', language)
    assign_stats('Chapters', chapters)
    assign_stats('Reviews', reviews)
    assign_stats('Favs', favorites)
    assign_stats('Follows', follows)
    assign_stats('Updated', updated)
    assign_stats_status('Complete', status)
    assign_stats('Published', published)
    assign_stats_concrete(1, crossover)