我正在使用 python 和我無法解決的字典。我正在使用字典。我正在嘗試在所有 medias.items() 中搜索字典的每個元素words，然后四行打印出來，兩個 formedias[0]和兩個 for medias[1]。我做錯了什么嗎？有什么辦法解決嗎？提前致謝。import requestsimport timefrom bs4 import BeautifulSoupheaders = { 'user-agent': "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36"}def count_words(url, the_word): r = requests.get(url, headers=headers) return r.text.lower().count(the_word)def main(): # url = 'https://www.nytimes.com/' medias = { 'Los Angeles Times': ['http://www.latimes.com/'], 'New York Times': ['http://www.nytimes.com/'] } word = 'trump' words = ['Trump', 'Facebook'] print('--- Iniciando ---') print('Hora: ', time.strftime("%X")) for web_name, urls in medias.items(): for url in urls: count = count_words(url, words) print('La palabra {} aparece {} veces en el sitio del {}.'.format(words, count, web_name))if __name__ == '__main__': main()
2 回答
滄海一幻覺
TA貢獻1824條經(jīng)驗 獲得超5個贊
for web_name, urls in medias.items():
for url in urls:
for word in words:
count = count_words(url, word)
print('La palabra {} aparece {} veces en el sitio del {}.'.format(word, count, web_name))
你傳遞了一個列表，而你應(yīng)該傳遞一個詞來count函數(shù)。
郎朗坤
TA貢獻1921條經(jīng)驗 獲得超9個贊
我在您的代碼中修復(fù)了一些錯誤：
首先，您在使用單詞時忘記遍歷數(shù)組，因此我在代碼的最后添加了一個 for 循環(huán)來循環(huán)遍歷這些單詞。
其次，在我這樣做之后，您的代碼返回零，所以我將 .lower() 添加到 count_words 中的每個單詞，然后它就起作用了。
import requests
import time
from bs4 import BeautifulSoup
headers = {
'user-agent': "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36"}
def count_words(url, the_word):
r = requests.get(url, headers=headers)
return r.text.lower().count(the_word.lower())
def main():
# url = 'https://www.nytimes.com/'
medias = {
'Los Angeles Times': ['http://www.latimes.com/'],
'New York Times': ['http://www.nytimes.com/']
}
word = 'trump'
words = ['Trump', 'Facebook']
print('--- Iniciando ---')
print('Hora: ', time.strftime("%X"))
for web_name, urls in medias.items():
for url in urls:
for word in words:
count = count_words(url, word)
print('La palabra {} aparece {} veces en el sitio del {}.'.format(word, count, web_name))
if __name__ == '__main__':
main()
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