data_slice = data[1:3] # array([2,3]), print(data_slice) data_nd = np.arange(1, 10).reshape(3, 3) # 高维数组的切片索引还可以结合整数索引混合使用 data_slice = data_nd[1, 1:] # array([5,6]) print(data_slice) data_slice = data_nd[2, :] # array([7,8,9]) , : 表...
直接上代码 # -*- coding:utf-8 -*- #《python for data analysis》第五章, pandas基础 # 高级数据结构与操作工具 import pandas as pd import numpy as np import time start = time.time() # pandas的数据结构, series and dataframe # 1、series,类似一维数据, 一个字典,建立了从索引值(index)到数...
8. # -*- coding:utf-8 -*- #《python for data analysis》 第十章 # 时间序列 import pandas as pd import numpy as np import time from datetime import datetime, timedelta import matplotlib.pyplot as plt start = time.time() np.random.seed(10) # 1、日期和时间数据类型及工具 # datetime以 ...
代码中仅保留了98年-08年的数据,更多数据-https:///wesm/pydata-book # -*- coding:utf-8 -*- # names data set import pandas as pd import numpy as np import time import matplotlib.pyplot as plt # 计时 start = time.time() # 组合98年到08年的数据到一张表, 一个名为names的dataframe ye...
Launch your data analytics career by mastering Python, the most popular programming language for data analysis. In this Track, you'll learn how to import, clean, manipulate, and visualize data using Python's powerful libraries. No prior coding experience is required; we'll guide you from the ...
Altair is a declarative statistical data visualization library based on Vega and Vega-Lite visualization grammars that can be used to create beautiful data visualizations such as bar, error, & pie charts, histograms, scatterplots, power spectra, stemplots, etc. using little coding of ...
github 数据挖掘相关: https://github.com/luanshiyinyang/DataMining https://github.com/fighting41love/funNLP https://github.com/YouChouNoBB/data-mining-introduction https://github.com/julycoding/The-Art-Of-Programming-By-July
Coding for Data Analysis with Python Introduction to Data Analysis with Python - lecture materials by Peter Duronelly and Ádám Vig with Ágoston Reguly (Georgia Tech) and Gábor Békés (CEU, KRTK, CEPR) This course material is a supplement to Data Analysis for Business, Economics, and Pol...
#!/usr/bin/python3 # coding: utf-8 import pymysql from urllib import parse import json import time import requests import re import jieba import jieba.analyse import csv from bs4 import BeautifulSoup import numpy as np from PIL import Image import matplotlib.pyplot as plt Mac_headers = { ...
1#-*- coding = uft-8 -*- 2#@Time : 2020/6/2 9:19 上午 3#@Author : 菜J学Python ...