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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(50)  评论(4编辑  收藏  举报