格码老师教编程

国内镜像源 清华：https://pypi.tuna.tsinghua.edu.cn/simple 阿里云：http://mirrors.aliyun.com/pypi/simple/ 中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/ 华中理工大学：http://pypi.hustunique.com/ 山东理工大学：http://pypi.sdutlinux.org/ 豆瓣：http://pypi.douban.com/simple/ 临时使用

有一个记事本:num.txt,有5个数字,内容如下: 1 100 200 10 1 -------- Python程序读取这5个数字,然后求和,把和再写入到这个文件的尾部,即横杠下方. 参考代码1： f=open("src\\num.txt","r") strList=f.readlines() f.close() strList.pop() floatList=list(map(lambda e:int(e),strList)) s=sum(floatList) f=open("src\\nu

参考代码1： from openpyxl import Workbook from openpyxl.chart import ( AreaChart, Reference, Series, ) wb = Workbook() ws = wb.active rows = [ ['Number', 'Batch 1', 'Batch 2'], [2, 40, 30], [3, 40, 25], [4, 50, 30], [5, 30, 1

参考代码: import openpyxl from openpyxl import Workbook fn=r'student.xlsx' wb=openpyxl.load_workbook(fn) ws=wb.worksheets[0] ListScore=[] FemaleListScore=[] MaleListScore=[] for row in ws.rows: if(row[3].value=="Score"): continue if(row[2].value=="F"):

测试代码1: import openpyxl from openpyxl import Workbook import random def generateRandomInformation(filename): wb=Workbook() ws=wb.worksheets[0] ws.append(['Name','Subject','Grade']) first='赵钱孙李' middle='伟昀琛东' last='坤艳志' subjects=('语文','数

1.第三方相关库: http://yumos.gitee.io/openpyxl3.0/index.html https://zhuanlan.zhihu.com/p/150045444?from_voters_page=true https://blog.csdn.net/weixin_43094965/article/details/82226263 https://www.jianshu.com/p/537ae962f3a0

代码演示: import requests from bs4 import BeautifulSoup import re def SpiderGet(url): try: r=requests.get(url,timeout=30) # r.rasie_for_status() r.encoding='utf-8' return r.text except: print("出现异常.") return "" url="http://www.exesoft.cn" so

111111111111 #1 a = 1 b = 2 c = a if a>b else b print(c) #2 a = [1,2,3,4,5,6] c = [i for i in a if i%2==0] print(sum(c)) #3 c={i for i in a if i%2==0} print(c) #4 c={i:i**i for i in a if i%2==0} print(c) #5 a = [1,2,3] b = [4,5,6] c = [i+j for i in a

1. import pandas as pd obj=pd.Series([True,3,'24','a',12.56]) print(obj) print(obj.values) print(obj.index) print(obj[3]) 2. import pandas as pd obj=pd.Series([1,3,8,24,23],index=['a','b','c','d','e']) print(obj) print(obj.index) print(obj['d']) 3.