摘要：
import pandas as pd import numpy as np import matplotlib.pyplot as plt mac_info = pd.read_csv('MacDB.dat') print(mac_info.dtypes) price float64 title 阅读全文
摘要：
from bs4 import BeautifulSoupimport timeimport pymongoimport requests# import randomfrom multiprocessing import Poolclient = pymongo.MongoClient('loca 阅读全文