为什么写入文件总是出问题？
源代码为：import requests
from bs4 import BeautifulSoup
from lxml import etree
import csv
i = open("introduction.csv",mode='w',encoding='utf-8',newline='')
csvwriter_introduction = csv.writer(i)
def download_one_page(url):
#拿到页面源代码
resp = requests.get(url)
resp.encoding = 'utf-8'#处理乱码
html = etree.HTML(resp.text)
cla = html.xpath('/html/body/div/div/div')#此处需要加上,因为默认是列表
names = cla.xpath('./div[@class = "sea_a23 clearfix"]')
contents = cla.xpath('./div[@class = "sea_a23 clearfix pt25"]')
#拿到每个title和content
for title in names:
txt1 = title.xpath('./h2/a/text()')
#csvwriter_title.writerow(txt1)
for content in contents:
feature = content.xpath('./div/h3/text()')
introduction = content.xpath('./div/p//text()')
#对数据进行简单的处理：\n\t,\n,空格,【】，\xa0,›,去掉
intro = (item.replace("\n\t","").replace(", ","").replace("›","").replace("\n","").replace(" ","").replace("【厂家】","厂家").replace("\xa0","").replace("【产品分类】","产品分类") for item in introduction)
introduction = (x.strip() for x in intro if x.strip()!='')
#把数据存放在文件中
#csvwriter_introduction.writerows(feature)
introduction = ''.join(introduction)
csvwriter_introduction.writerows(introduction)
#csvwriter_picture.writerow(picture)
#print(feature)
#print(introduction)
#print(''.join(introduction))
if __name__ == '__main__':
download_one_page('http://www.c-denkei.cn/index.php?d=home&c=goods&m=search&s=%E7%94%B5%E6%BA%90&c1=0&c2=0&c3=0&page=')
直接用print打印出来都是好好的，每次一写入就出问题 这样子可以吗?
import requests
from bs4 import BeautifulSoup
from lxml import etree
import csv
i = open("introduction.csv",mode='w',encoding='utf-8',newline='')
csvwriter_introduction = csv.writer(i)
def download_one_page(url):
#拿到页面源代码
resp = requests.get(url)
resp.encoding = 'utf-8'#处理乱码
html = etree.HTML(resp.text)
cla = html.xpath('/html/body/div/div/div')#此处需要加上,因为默认是列表
names = cla.xpath('./div[@class = "sea_a23 clearfix"]')
contents = cla.xpath('./div[@class = "sea_a23 clearfix pt25"]')
#拿到每个title和content
for title in names:
txt1 = title.xpath('./h2/a/text()')
#csvwriter_title.writerow(txt1)
for content in contents:
feature = content.xpath('./div/h3/text()')
introduction = content.xpath('./div/p//text()')
#对数据进行简单的处理：\n\t,\n,空格,【】，\xa0,›,去掉
intro = (item.replace("\n\t","").replace(",","").replace("›","").replace("\n","").replace(" ","").replace("【厂家】","厂家").replace("\xa0","").replace("【产品分类】","产品分类") for item in introduction)
introduction = (x.strip() for x in intro if x.strip()!='')
#把数据存放在文件中
#csvwriter_introduction.writerows(feature)
introduction = ''.join(introduction)
i.write(introduction)# 改成python内置函数
#csvwriter_picture.writerow(picture)
#print(feature)
#print(introduction)
#print(''.join(introduction))
if __name__ == '__main__':
download_one_page('http://www.c-denkei.cn/index.php?d=home&c=goods&m=search&s=%E7%94%B5%E6%BA%90&c1=0&c2=0&c3=0&page=') 临时号 发表于 2022-6-11 23:38
这样子可以吗?
你这全在一行上呀{:10_266:}，我想要分行的那种 writerows 会把可迭代对象迭代出的每一个元素写入多行，而字符串的每一个元素是一个字符，
所以造成了一个字符一行的情况，故对你的代码修改如下：
import requests
from bs4 import BeautifulSoup
from lxml import etree
import csv
i = open("introduction.csv",mode='w',encoding='utf-8',newline='')
csvwriter_introduction = csv.writer(i)
def download_one_page(url):
#拿到页面源代码
resp = requests.get(url)
resp.encoding = 'utf-8'#处理乱码
html = etree.HTML(resp.text)
cla = html.xpath('/html/body/div/div/div')#此处需要加上,因为默认是列表
names = cla.xpath('./div[@class = "sea_a23 clearfix"]')
contents = cla.xpath('./div[@class = "sea_a23 clearfix pt25"]')
#拿到每个title和content
for title in names:
txt1 = title.xpath('./h2/a/text()')
#csvwriter_title.writerow(txt1)
for content in contents:
feature = content.xpath('./div/h3/text()')
introduction = content.xpath('./div/p//text()')
#对数据进行简单的处理：\n\t,\n,空格,【】，\xa0,›,去掉
intro = (item.replace("\n\t","").replace(", ","").replace("›","").replace("\n","").replace(" ","").replace("【厂家】","厂家").replace("\xa0","").replace("【产品分类】","产品分类") for item in introduction)
introduction = (x.strip() for x in intro if x.strip()!='')
#把数据存放在文件中
#csvwriter_introduction.writerows(feature)
introduction = ''.join(introduction)
csvwriter_introduction.writerow() # 修改了这里
#csvwriter_picture.writerow(picture)
#print(feature)
#print(introduction)
#print(''.join(introduction))
if __name__ == '__main__':
download_one_page('http://www.c-denkei.cn/index.php?d=home&c=goods&m=search&s=%E7%94%B5%E6%BA%90&c1=0&c2=0&c3=0&page=') isdkz 发表于 2022-6-12 22:41
writerows 会把可迭代对象迭代出的每一个元素写入多行，而字符串的每一个元素是一个字符，
所以造成了一 ...
多谢大佬
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