Python3程序设计课后习题参考答案.pdf.pdf

# s

import math

a=eval(input(" "))

h=eval(input(" "))

s = a*h/2

lst1.append(len(item))

p=max(lst1)

for item in lst:

if len(item)==p:

print(item,end=" ")

x=eval(input(" A "))

y=eval(input(" B "))

z=eval(input(" C "))

a=eval(input(" a "))

p = (a + b + c) / 2

s = math.sqrt(p * (p - a) * (p - b) * (p - c))

print(" {:.2f}".format(s))

sentence='''resident Xi Jinping urged all-out efforts

to achieve the goal of eliminating poverty in China within two

years in his three-day inspection tour of Chongqing, which ended on Wednesday.

sentence='''residEnt Xi Jinping urgEd all-out Efforts'''

print(sentence.replace("E"," "))

xx=input("IDCard Number:")

print(xx[6:10]+" "+xx[10:12]+' '+xx[12:14]+" ")

s="abc32TT9ac"

t=""

for i in range(len(s)):

if s[i].islower():

num=eval(input(" "))

s=str(num)

print(s[::-1])

s=0

flag=1

for i in range(1,100):

s=s+i*i*flag

flag*=-1

for i in range(1,num//2+1):