作业
r1 = eval('1 + 2') print(type(r1), r1) r2 = eval('[1, 6, 7.5]') print(type(r2), r2) r3 = eval('"python"') print(type(r3), r3) r4 = eval('7, 42') print(type(r4), r4) x1, y1 = 1.2, 3.57 x2, y2 = 2.26, 8.7 print('{:-^40}'.format('方法一')) print('x1 = {}, y1 = {}'.format(x1, y1)) print('x2 = {}, y2 = {}'.format(x2, y2)) print('{:-^40}'.format('方法二')) print('x1 = {:.1f}, y1 = {:.1f}'.format(x1, y1)) print('x2 = {:.1f}, y2 = {:.1f}'.format(x2, y2)) print('{:-^40}'.format('方法三')) print('x1 = {:<15.1f}, y1 = {:<15.1f}'.format(x1, y1)) print('x2 = {:<15.1f}, y2 = {:<15.1f}'.format(x2, y2)) print('{:-^40}'.format('方法四')) print('x1 = {:>15.1f}, y1 = {:>15.1f}'.format(x1, y1)) print('x2 = {:>15.1f}, y2 = {:>15.1f}'.format(x2, y2)) 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*'=') r1 = eval('1 + 2') print(type(r1), r1) r2 = eval('[1, 6, 7.5]') print(type(r2), r2) r3 = eval('"python"') print(type(r3), r3) r4 = eval('7, 42') print(type(r4), r4) x, y = eval(input('Enter two oprands: ')) ans = x + y print(f'{x} + {y} = {ans}') print(f'{type(x)} + {type(y)} = {type(ans)}') ans1 = 0.1 + 0.2 print(f'0.1 + 0.2 = {ans1}') from decimal import Decimal ans2 = Decimal('0.1') + Decimal('0.2') print(f'0.1 + 0.2 = {ans2}') 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('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')) from math import sqrt n = float(input('输入一个数:')) ans1 = sqrt(n) ans2 = n**0.5 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: {ans2:.2f}') print(ord('2')) from math import pi 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*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...') a=input('请输入第一个数?') f=input('请输入第二个数?') g=input('请输入第三个数?') b=float(a) s=float(f) d=float(g) x1=b**365 x2=s**365 x3=d**365 print('1.0的365次方为:',x1) print('1.01的365次方为',x2) print('0.99的365次方为',x3) import math p = 1.038 c = 3.7 k = 0.0054 m1 = 47 m2 = 67 tw = 100 ty = 70 t0 = int(input("输入原始温度:")) t = m2**(2/3) * c * p**(1/3) * math.log(0.76*(t0 - tw)/(ty - tw))/math.log(math.e)/(k * math.pi**2 * (4*math.pi/3)**(2/3)) print(f"T0= {t0} °C,t = {t//60:2g} 分 {t%60:.0f}秒")
Python中print的常用方法:1.直接输出数据、给变量赋值后再输出2.对数据进行格式化输出3.改变结束是的标志
函数eval()的用法:1.命名空间2.参数查找
float 浮点数计算和准确数计算不相等,decimal后的值才是准确的值
ord()函数就是用来返回单个字符的ascii值(0-255)或者unicode数值()
chr()函数是输入一个整数【0,255】返回其对应的ascii符号
这次实验让我对基础函数的作用有了一个更全面的了解
posted on 2022-03-29 20:21 SHADOW&KING 阅读(51) 评论(4) 编辑 收藏 举报