第一次发帖，请多多关照。我正在尝试使用 Python 进行网络抓取。
我的目标是制作一个脚本来访问下面的页面:
“WWWzaraDOTcom/uk/en/sale/woman/dresses/view-all-c731533.html”
我希望脚本返回 a.name.item，即“data-ecirp”中的数据，其中 span 类分别为“sale”和“crossOut diagonal-line”。
我想及时在其他网站上使用这个脚本。
我下面的当前代码可以访问 Zara，拉取页面并在 RE/BS 中进行操作 - 但在多次谷歌搜索 BeautifulSoup 和 span 标签后我无法拉出任何价格。
Regex 有点伤了我的脑袋，我无法从我的书中得到任何简单的代码示例来工作 IRL。
- 是教BeautifulSoup正确遍历的答案
- 或者使用 RE 从集合字符串中推导出值？
或者我应该采用另一种更好的方法。 (我想在商品最终打折时发出提醒……)
import requests import re r = requests.get(“http://www.zara.com/uk/en/sale/woman/dresses/view-all-c731533.html”) r.raise_for_status() html = r.text soup = BeautifulSoup(html, 'html.parser')
最佳答案
你想要的所有数据都在product-info标签中，url也不同，因为你必须先选择一个地区:
import requests
from bs4 import BeautifulSoup
r = requests.get("http://www.zara.com/ie/en/sale/woman/dresses/view-all-c731533.html?#utm_referrer=http%3A%2F%2Fwww.zara.com%2F%3Fgo%3Dhttp%253A%2F%2Fwww.zara.com%2Fshare%2Fsale%2Fwoman%2Fdresses%2Fview-all-c731533.html")
r.raise_for_status()
html = r.text
soup = BeautifulSoup(html)
prods = soup.find_all("div", {"class": "product-info"})
print(prods)
for p in prods:
print(p.a.text)
print("Old price {}".format(p.find("span", {"class": "crossOut"})["data-ecirp"]))
print("New price {}".format(p.find("span", {"class": "sale"})["data-ecirp"]))
输出:
ZIP-BACK TUBE DRESS
Old price 49.95 EUR
New price 29.99 EUR
SEQUINNED DRESS
Old price 69.95 EUR
New price 29.99 EUR
HALTER NECK SHIMMER THREAD DRESS
Old price 39.95 EUR
New price 25.99 EUR
CREPE SLEEVELESS DRESS
Old price 49.95 EUR
New price 29.99 EUR
OTTOMAN RIB DRESS
Old price 39.95 EUR
New price 25.99 EUR
SHORT LACE DRESS
Old price 49.95 EUR
New price 39.99 EUR
SPARKLY VELVET DRESS
Old price 49.95 EUR
New price 29.99 EUR
DRESS WITH SIDE GATHERING
Old price 19.95 EUR
New price 12.99 EUR
TUBE DRESS WITH STRAPPY BACK
Old price 59.95 EUR
New price 49.99 EUR
SKATER DRESS
Old price 49.95 EUR
New price 39.99 EUR
PARTY DRESS
Old price 49.95 EUR
New price 29.99 EUR
DOUBLE LAYER DRESS
........................
将数据存储在字典中可能是个好主意:
from collections import defaultdict
d = defaultdict(defaultdict)
for p in prods:
k = p.a.text
v1 = p.find("span", {"class": "crossOut"})["data-ecirp"]
v2 = p.find("span", {"class": "sale"})["data-ecirp"]
d[k]["new_price"] = v1
d[k]["old_price"] = v2
d[k]["saving"] = float(v1.split()[0]) - float(v2.split()[0])
print(d)
这会给你:
defaultdict(<class 'collections.defaultdict'>, {'': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}),
'CROCHET DRESS': defaultdict(None, {'new_price': '49.95 EUR','saving': 19.960000000000004, 'old_price': '29.99 EUR'}),
'BASIC SLEEVELESS DRESS': defaultdict(None, {'new_price': '14.95 EUR', 'saving': 4.959999999999999, 'old_price': '9.99 EUR'}), 'FLORAL PRINT TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'COMBINED DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'SEQUINNED DRESS': defaultdict(None, {'new_price': '69.95 EUR', 'saving': 39.96000000000001, 'old_price': '29.99 EUR'}), 'LONG CROCHET DRESS': defaultdict(None, {'new_price': '89.95 EUR', 'saving': 39.96, 'old_price': '49.99 EUR'}), 'STRIPED DRESS': defaultdict(None, {'new_price': '19.95 EUR', 'saving': 6.959999999999999, 'old_price': '12.99 EUR'}), 'HALTER NECK SHIMMER THREAD DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'V-NECK TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'DRESS WITH ZIPS': defaultdict(None, {'new_price': '25.95 EUR', 'saving': 7.960000000000001, 'old_price': '17.99 EUR'}), 'FLOUNCE DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'LONG TUNIC WITH SIDE VENTS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'FLOWING STUDIO DRESS': defaultdict(None, {'new_price': '89.95 EUR', 'saving': 39.96, 'old_price': '49.99 EUR'}), 'KNIT SWEATER WITH TAILORED HEM': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'BUTTON DETAIL DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'SUEDE EFFECT DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'FAUX LEATHER DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'POLKA DOT DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'CREPE SLEEVELESS DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'DEVORÉ VELVET DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'DENIM DRESS WITH BELT': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'LACE APPLIQUÉ DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'JACQUARD DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'PATCH PINAFORE DRESS': defaultdict(None, {'new_price': '45.95 EUR', 'saving': 19.960000000000004, 'old_price': '25.99 EUR'}), 'EYELET DRESS WITH VELVET RIBBON': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'LONG LACE DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 23.960000000000004, 'old_price': '25.99 EUR'}), 'LONG PATCHWORK DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'MIDI CROSSOVER DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'EMBROIDERED DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'LONG CREPE DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'HALTER NECK DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'DRESS WITH GATHERED WAIST': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'GINGHAM CHECK TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'JUMPSUIT WITH STRAPS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'DOUBLE LAYER DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'LACE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'MIDI PINAFORE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'LONG TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'BANDEAU DRESS': defaultdict(None, {'new_price': '25.95 EUR', 'saving': 7.960000000000001, 'old_price': '17.99 EUR'}), 'LINEN SHIRTDRESS BELT': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'STUDIO DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'CHECK PINAFORE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'LONG SILK STUDIO DRESS WITH LACE': defaultdict(None, {'new_price': '99.95 EUR', 'saving': 49.96, 'old_price': '49.99 EUR'}), 'BEAD EMBROIDERED DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 29.960000000000004, 'old_price': '29.99 EUR'}), 'DRESS WITH SIDE GATHERING': defaultdict(None, {'new_price': '19.95 EUR', 'saving': 6.959999999999999, 'old_price': '12.99 EUR'}), 'DRESS WITH BACK OPENING': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'SCHIFFLI LACE DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 23.960000000000004, 'old_price': '25.99 EUR'}), 'SPARKLY VELVET DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'STRAPPY DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'TUNIC WITH SLITS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'A-LINE PATCHWORK DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'DRESS WITH SEAM DETAILS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'COMBINATION DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'MICRO-JACQUARD DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'PINAFORE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'JACQUARD GEMSTONE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'VELVET DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'HOUNDSTOOTH PINAFORE DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'KNIT DRESS': defaultdict(None, {'new_price': '17.95 EUR', 'saving': 4.959999999999999, 'old_price': '12.99 EUR'}), 'LOOSE FIT PRINTED DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'LEATHER EFFECT DRESS. CUT WORK': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'GEOMETRIC DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'LONG DRESS': defaultdict(None, {'new_price': '25.95 EUR', 'saving': 7.960000000000001, 'old_price': '17.99 EUR'}), 'RETRO PINAFORE DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'CHECK DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'PRINTED SHIRT DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'PATTERNED DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'DRESS WITH CHAIN NECKLINE': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 29.960000000000004, 'old_price': '29.99 EUR'}), 'STAR PRINT DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'DENIM DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'ROUND NECK DRESS': defaultdict(None, {'new_price': '45.95 EUR', 'saving': 19.960000000000004, 'old_price': '25.99 EUR'}), 'FLORAL PRINT DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'RUFFLE DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'SHORT DRESS': defaultdict(None, {'new_price': '25.99 EUR', 'saving': 8.0, 'old_price': '17.99 EUR'}), 'PRINTED DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'FLARED DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'DENIM PINAFORE DRESS': defaultdict(None, {'new_price': '45.95 EUR', 'saving': 19.960000000000004, 'old_price': '25.99 EUR'}), 'ZIP-BACK TUBE DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'ASYMMETRIC DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'DRAPED DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'STRIPED JACQUARD DRESS': defaultdict(None, {'new_price': '25.95 EUR', 'saving': 7.960000000000001, 'old_price': '17.99 EUR'}), 'DRESS WITH SIDE KNOT DETAIL': defaultdict(None, {'new_price': '19.95 EUR', 'saving': 6.959999999999999, 'old_price': '12.99 EUR'}), 'OTTOMAN RIB DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'FLOWING TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'METALLIC APPLIQUÉ TUNIC': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'PATCHWORK DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'PARTY DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'FRAYED MIDI DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 9.96, 'old_price': '19.99 EUR'}), 'FLORAL DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'SKATER DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'DRESS WITH LOW-CUT BACK': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'LONG DOUBLE LAYER DRESS': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'LONG TUBE DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'FITTED DRESS': defaultdict(None, {'new_price': '14.95 EUR', 'saving': 4.959999999999999, 'old_price': '9.99 EUR'}), 'DRESS WITH V-NECK BACK': defaultdict(None, {'new_price': '29.95 EUR', 'saving': 11.96, 'old_price': '17.99 EUR'}), 'LONG VELVET DRESS': defaultdict(None, {'new_price': '89.95 EUR', 'saving': 39.96, 'old_price': '49.99 EUR'}), 'HALTER DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 9.960000000000004, 'old_price': '29.99 EUR'}), 'PRINTED TUNIC': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'FULL TUNIC WITH PLAITED BELT': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'STUDIO DRESS WITH LACE-UP BACK': defaultdict(None, {'new_price': '69.95 EUR', 'saving': 19.96, 'old_price': '49.99 EUR'}), 'DOTTED SWISS DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 23.960000000000004, 'old_price': '25.99 EUR'}), 'SHORT LACE DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'DRESS WITH FULL SKIRT': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'ASYMMETRICAL LONG DRESS': defaultdict(None, {'new_price': '17.95 EUR', 'saving': 4.959999999999999, 'old_price': '12.99 EUR'}), 'STRAIGHT CUT DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'MIDI DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'}), 'PLEATED DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 19.960000000000004, 'old_price': '29.99 EUR'}), 'LACE SKATER DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'TUBE DRESS WITH STRAPPY BACK': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'LONG PRINTED DRESS': defaultdict(None, {'new_price': '49.95 EUR', 'saving': 9.96, 'old_price': '39.99 EUR'}), 'SHEER DRESS': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 33.96000000000001, 'old_price': '25.99 EUR'}), 'A-LINE TOP': defaultdict(None, {'new_price': '59.95 EUR', 'saving': 9.96, 'old_price': '49.99 EUR'}), 'RIBBED DRESS': defaultdict(None, {'new_price': '17.95 EUR', 'saving': 4.959999999999999, 'old_price': '12.99 EUR'}), '"ESSENTIALS" DENIM PINAFORE DRESS': defaultdict(None, {'new_price': '19.95 EUR', 'saving': 6.959999999999999, 'old_price': '12.99 EUR'}), 'PRINTED JUMPSUIT DRESS': defaultdict(None, {'new_price': '39.95 EUR', 'saving': 13.960000000000004, 'old_price': '25.99 EUR'})})
您可能还会找到 pandas如果您要分析数据，这很有用，如果您将数据存储在元组中，则可以轻松制作一个 DataFrame，您可以将其保存到 csv 中并从中加载。
data = []
for p in prods:
k = p.a.text
v1 = p.find("span", {"class": "crossOut"})["data-ecirp"]
v2 = p.find("span", {"class": "sale"})["data-ecirp"]
t = k, float(v1.split()[0]), float(v2.split()[0]), float(v1.split()[0]) - float(v2.split()[0])
data.append(t)
import pandas as pd
df = pd.DataFrame(data, columns=["name", "old", "new", "saving"])
print(df)
df.to_csv("data.csv", index=0)
这会给你一个像这样的 df:
name old new saving
0 ZIP-BACK TUBE DRESS 49.95 29.99 19.96
1 SEQUINNED DRESS 69.95 29.99 39.96
2 HALTER NECK SHIMMER THREAD DRESS 39.95 25.99 13.96
3 CREPE SLEEVELESS DRESS 49.95 29.99 19.96
4 OTTOMAN RIB DRESS 39.95 25.99 13.96
5 SHORT LACE DRESS 49.95 39.99 9.96
6 SPARKLY VELVET DRESS 49.95 29.99 19.96
7 DRESS WITH SIDE GATHERING 19.95 12.99 6.96
8 TUBE DRESS WITH STRAPPY BACK 59.95 49.99 9.96
9 SKATER DRESS 49.95 39.99 9.96
10 PARTY DRESS 49.95 29.99 19.96
11 DOUBLE LAYER DRESS 29.95 17.99 11.96
12 DRESS WITH LOW-CUT BACK 49.95 39.99 9.96
13 DRESS WITH SIDE GATHERING 19.95 12.99 6.96
14 STUDIO DRESS 79.95 49.99 29.96
15 DOUBLE LAYER DRESS 59.95 49.99 9.96
16 STUDIO DRESS WITH LACE-UP BACK 69.95 49.99 19.96
并将数据保存到名为 data.csv 的 csv 文件中。
加载数据并按最大节省排序:
df = pd.read_csv("data.csv")
print(df.sort_values(["saving"],ascending=0))
哪个会输出:
name old new saving
134 LONG SILK STUDIO DRESS WITH LACE 99.95 49.99 49.96
1 SEQUINNED DRESS 69.95 29.99 39.96
137 LONG VELVET DRESS 89.95 49.99 39.96
71 FLOWING STUDIO DRESS 89.95 49.99 39.96
33 LONG CROCHET DRESS 89.95 49.99 39.96
116 SHEER DRESS 59.95 25.99 33.96
85 DRESS WITH CHAIN NECKLINE 59.95 29.99 29.96
132 BEAD EMBROIDERED DRESS 59.95 29.99 29.96
14 STUDIO DRESS 79.95 49.99 29.96
......................................................
要添加一个应该是节省百分比的列:
df["precent_saving"] = (df["old"] - df["new"]) / df["old"] * 100
print(df)
输出:
name old new saving precent_saving
0 ZIP-BACK TUBE DRESS 49.95 29.99 19.96 39.959960
1 SEQUINNED DRESS 69.95 29.99 39.96 57.126519
2 HALTER NECK SHIMMER THREAD DRESS 39.95 25.99 13.96 34.943680
3 CREPE SLEEVELESS DRESS 49.95 29.99 19.96 39.959960
4 OTTOMAN RIB DRESS 39.95 25.99 13.96 34.943680
5 SHORT LACE DRESS 49.95 39.99 9.96 19.939940
6 SPARKLY VELVET DRESS 49.95 29.99 19.96 39.959960
7 DRESS WITH SIDE GATHERING 19.95 12.99 6.96 34.887218
8 TUBE DRESS WITH STRAPPY BACK 59.95 49.99 9.96 16.613845
9 SKATER DRESS 49.95 39.99 9.96 19.939940
10 PARTY DRESS 49.95 29.99 19.96 39.959960
11 DOUBLE LAYER DRESS 29.95 17.99 11.96 39.933222
关于使用 BeautifulSoup4 的 Python Web 抓取跨度标签以获取英镑价格，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34482901/