Question

我正在做一个基础练习项目。我调用一个简单的Wikipedia页面，然后使用Beautiful Soup将所有内容写入文本文件。然后我计算一下那个单词在该新写入的文本文件中出现的次数

由于某种原因，我第一次运行该代码时，得到的编号与第二次运行该代码时的编号不同。

相信我第一次运行代码中，“anime.txt”比第二次我运行的代码不同。

问题一定出在我用Beautiful Soup收集所有文本数据的方式上。

请帮助

from urllib.request import urlopen
from bs4 import BeautifulSoup

f = open("anime.txt", "w", encoding="utf-8")
f.write("")
f.close() 

my_url ="https://en.wikipedia.org/wiki/Anime"

uClient = urlopen(my_url)
page_html = uClient.read()
uClient.close()
page_soup = BeautifulSoup(page_html, "html.parser")
p=page_soup.findAll("p")


f = open("anime.txt", "a", encoding="utf-8")

for i in p:

    f.write(i.text)
    f.write("\n\n")

data= open("anime.txt", encoding="utf-8").read()
anime_count = data.count("anime")
Anime_count = data.count("Anime")

print(anime_count,"\n")
print(Anime_count, "\n")

count= anime_count+Anime_count

print("The total number of times the word Anime appears within <p> in the wikipedia page is : ", count)

第一输出：

anime_count = 14

Anime_count = 97

计数= 111

第二输出：

anime_count = 23

Anime_count = 139

计数= 162

编辑：

我根据前2条注释编辑了代码，当然，现在可以使用：P。就正确打开和关闭文件的方式/次数而言，这看起来更好吗？

from urllib.request import urlopen
from bs4 import BeautifulSoup

my_url ="https://en.wikipedia.org/wiki/Anime"

uClient = urlopen(my_url)
page_html = uClient.read()
uClient.close()
page_soup = BeautifulSoup(page_html, "html.parser")
p=page_soup.findAll("p")


f = open("anime.txt", "w", encoding="utf-8")

for i in p:

    f.write(i.text)
    f.write("\n\n")

f.close()

data= open("anime.txt", encoding="utf-8").read()
anime_count = data.count("anime")
Anime_count = data.count("Anime")

print(anime_count,"\n")
print(Anime_count, "\n")

count= anime_count+Anime_count

print("The total number of times the word Anime appears within <p> in the wikipedia page is : ", count)

Answer 1

不要混淆有关打开和关闭文件。在with statements中包括所有写作/阅读部分。

from urllib.request import urlopen
from bs4 import BeautifulSoup

with open("anime.txt", "w", encoding="utf-8") as outfile:

    my_url ="https://en.wikipedia.org/wiki/Anime"

    uClient = urlopen(my_url)
    page_html = uClient.read()
    uClient.close()
    page_soup = BeautifulSoup(page_html, "html.parser")
    p=page_soup.findAll("p")


    for i in p:
        outfile.write(i.text)
        outfile.write("\n\n")

with open("anime.txt", "r", encoding="utf-8") as infile:
    data = infile.read()
    anime_count = data.count("anime")
    Anime_count = data.count("Anime")

    print(anime_count,"\n")
    print(Anime_count, "\n")

    count= anime_count+Anime_count

    print("The total number of times the word Anime appears within <p> in the wikipedia page is : ", count)s : ", count)

为什么我的单词计数器在第一次运行时会产生与第二次相比不同的输出？

1 个答案: