【Python】第三章(容器)综合练习
作者:互联网
scores = {"Zhang San": 45, "Li Si": 78, "Wang Wu": 40, \ "Zhou Liu": 96, "Zhao Qi": 65, "Sun Ba": 90, \ "Zheng Jiu": 78, "Wu Shi": 99, "Dong Shiyi": 60} print(max(scores.values())) print(min(scores.values())) print(sum(scores.values())/len(scores)) print([k for k, v in scores.items() if v == max(scores.values())])
yr = int(input()) if (yr % 4 == 0 and yr % 100 != 0) or (yr % 400 == 0): print("闰年") else: print("平年")
import random x = [random.randint(1,100) for i in range(20)] res = sorted(x[:10])+sorted(x[10:], reverse=True) print(res)
import random x = [random.randint(1, 100) for i in range(20)] print(x) x[::2] = sorted(x[::2], reverse=True) print(x)
s = input() res = [(ch, s.index(ch)) for ch in s if s.count(ch) == 1] # 带空格 res1 = [(ch, s.index(ch)) for ch in s if s.count(ch) == 1 and ch != ' '] # 不带空格 for ch, index in res1: print(ch, " ", index)
s = input() res = [(ch, s.rfind(ch)) for ch in set(s)] for ch, index in res: print(ch, " ", index)
from collections import Counter s = input() cnt = Counter(s).most_common() for k, v in cnt: print(k, " ", v)
s = input() if s == s[::-1]: print("Yes") else: print("No")
import math a = 10 b = 40 c = 15 det = b*b-4*a*c if det > 0: res1 = (-b + math.sqrt(det)) / (2 * a) res2 = (-b - math.sqrt(det)) / (2 * a) print("{0:.2f} {1:.2f}".format(res1, res2)) elif det == 0: res = (-b) / (2 * a) print("{:.2f}".format(res)) else: print("无解")
total = 0 for yr in range(10): total = (total+1000)*(1+0.047) print("{:.2f}".format(total))
from datetime import datetime yr = datetime.now().year mn = datetime.now().month dy = datetime.now().day print("{0:4d}-{1:2d}-{2:2d}".format(yr, mn, dy))
标签:容器,ch,第三章,index,Python,res,scores,print,yr 来源: https://blog.csdn.net/fftx_00/article/details/122223345