实验任务1
task1-1.py
实验源码:
1 print('hey,u') 2 3 print('hey','u') 4 x,y,z = 1,2,3 5 print(x,y,z) 6 7 print('x = %d,y = %d,z = %d'%(x,y,z)) 8 print('x = {},y ={},z = {}'.format(x,y,z)) 9 print(f'x = {x},y = {y},z = {z}') 10 11 print(x) 12 print(y) 13 print(z) 14 15 print(x,end='') 16 print(y,end='') 17 print(z)
实验结果:
task1-2.py
实验源码:
x1,y1 = 1.2,3.57 x2,y2 = 2.26,8.7 print ('{:-^40}'.format('输出1')) print('x1 = {},y1 = {}'.format(x1,y1)) print('x2 = {},y2 = {}'.format(x2,y2)) print ('{:-^40}'.format('输出2')) print('x1 = {:.1f},y1 = {:.1f}'.format(x1,y1)) print('x2 = {:.1f},y2 = {:.1f}'.format(x2,y2)) print ('{:-^40}'.format('输出3')) print('x1 = {:<15.1f},y1 = {:<15.1f}'.format(x1,y1)) print('x2 = {:<15.1f},y2 = {:<15.1f}'.format(x2,y2)) print ('{:-^40}'.format('输出4')) print('x1 = {:>15.1f},y1 = {:>15.1f}'.format(x1,y1)) print('x2 = {:>15.1f},y2 = {:>15.1f}'.format(x2,y2))
实验结果:
task1-3.py
实验源码:
name1, age1 = 'Bill', 19 name2, age2 = 'Hellen', 18 title = 'Personnel Information' print(f'{title:=^40}') print(f'name: {name1:10} age: {age1:3}') print(f'name: {name2:10} age: {age2:3}') print(40*'=')
实验结果:
实验总结:print输出中,如果是字符串则需要引号,如果是数字则不需要引号
实验任务2
task2-1.py
实验源码:
r1 = eval('1 + 2') print(type(r1), r1) r2 = eval('1+2j') print(type(r2), r2) r3 = eval('"python"') print(type(r3), r3) r4 = eval('7, 42') print(type(r4), r4)
实验结果:
task2-2.py
实验源码
x, y = eval(input('Enter two oprands: ')) ans = x + y print(f'{x} + {y} = {ans}') print(f'{type(x)} + {type(y)} = {type(ans)}')
实验结果 :
实验总结:
eval可以将括号中的字符串转变为可以运算的内容
实验任务3
task3.py
实验源码:
ans1 = 0.1 + 0.2 print(f'0.1 + 0.2 = {ans1}') import decimal ans2 = decimal.Decimal('0.1') + decimal.Decimal('0.2') print(f'0.1 + 0.2 = {ans2}')
实验结果:
实验误差:因为十进制导致结果不够精确而产生了误差
实验任务4
task4.py
实验源码:
print(chr(0x1f600), end = " ") print(chr(0x1f601), end = " ") print(chr(0x1f602), end = " ") print(chr(0x1f603), end = " ") print(chr(0x1f604)) print(chr(10000), end=" ") print(chr(0x025b), end=" ") print(chr(0x2708), end=" ") print(chr(0x00A5), end=" ") print(chr(0x266b)) print(ord('a'), end = " ") print(ord('b'), end = " ") print(ord('c')) print(ord('A'), end = " ") print(ord('B'), end = " ") print(ord('C')) print(ord('0'), end = " ") print(ord('1'), end = " ") print(ord('2'))
实验结果:
实验5
task5_1.py
实验源码:
import math n = float(input('输入一个数:')) ans1 = n**0.5 ans2 = pow(n, 0.5) ans3 = math.sqrt(n) print('%.2f的平方根是: %.2f' %(n, ans1)) print('{:.2f}的平方根是: {:.2f}'.format(n, ans2)) print(f'{n:.2f}的平方根是: {ans3:.2f}')
实验结果:
task5_2.py
实验源码:
# 神奇的pi,与大饼 import math text = ''' 好奇心是人的天性。 理想情况下,学习新东西是让人愉快的事。 但学校里的学习似乎有点像苦役。 有时候,需要画一个大饼,每次尝试学一些新鲜的,才会每天变得更好一点点。 ''' print(text) r = float(input('给学习画一个大饼,大饼要做的很大,半径要这么大: ')) circle = 2*math.pi*r print(f'绕起来,大饼的圆周有这么长, {circle}, 够不够激发你探索未知的动力...')
实验结果:
实验6
task6.py
实验源码:
x = eval(input('输入一个数字:')) y = x**365 print(x,'的365次方:',y)
实验结果:
实验7
task7.py
实验源码:
import math p = 1.038 c = 3.7 k = 5.4*(10**-3) M = 67 Tw = 100 Ty = 70 T0 = eval(input('输入一个初始温度:')) A = M**(2/3)*c*p**(1/3) B = k*(math.pi)**2*(4*math.pi/3)**(2/3) C = math.log(0.76*(T0-Tw)/(Ty-Tw)) t = A*C/B x = int(t//60) y = int(t%60) print('T0=',T0,'℃,','t=',x,'分',y,'秒')
实验结果:
实验8
task8.py
实验源码:
print('欢迎使用家用电器销售系统!') print('产品和价格信息如下:') print('***********************************************************') print('%-10s'%'编号','%-10s'%'名称','%-10s'%'品牌','%-10s'%'价格','%-10s'%'库存数量') print('-----------------------------------------------------------') print('%-10s'%'0001','%-10s'%'电视机','%-10s'%'海尔','%10.2f'%5999.00,'%10d'%20) print('%-10s'%'0002','%-10s'%'冰箱','%-10s'%'西门子','%10.2f'%6998.00,'%10d'%15) print('%-10s'%'0003','%-10s'%'洗衣机','%-10s'%'小天鹅','%10.2f'%1999.00,'%10d'%10) print('%-10s'%'0004','%-10s'%'空调','%-10s'%'格力','%10.2f'%3900.00,'%10d'%0) print('%-10s'%'0005','%-10s'%'热水器','%-10s'%'美的','%10.2f'%688.00,'%10d'%30) print('%-10s'%'0006','%-10s'%'笔记本','%-10s'%'联想','%10.2f'%5699.00,'%10d'%10) print('%-10s'%'0007','%-10s'%'微波炉','%-10s'%'苏泊尔','%10.2f'%480.50,'%10d'%33) print('%-10s'%'0008','%-10s'%'投影仪','%-10s'%'松下','%10.2f'%1250.00,'%10d'%12) print('%-10s'%'0009','%-10s'%'吸尘器','%-10s'%'飞利浦','%10.2f'%999.00,'%10d'%9) print('-----------------------------------------------------------') product_id = input('请输入您要购买的产品编号:') price = float(input('请输入您要购买的产品价格:')) count = int(input('请输入您要购买的产品数量:')) print('购买成功,您需要支付',price*count,'元') print('谢谢您的光临,下次再见!')
实验结果:
标签:%-,初体验,end,Python,编程,源码,实验,print,10s From: https://www.cnblogs.com/lqx2022/p/17191367.html