实验1 Python开发环境使用和编程初体验

#task1-1
print('hey, u')
print('hey', ' u')

x,y,z = 1,2,3
print(x, y, z)

print('x = %d, y = %d, z = %d' %(x,y,z)) 
print('x = {}, y = {}, z = {}'.format(x,y,z)) 
print(f'x = {x}, y = {y}, z = {z}') 

print(x)
print(y)
print(z)
print(x, end=' ')
print(y, end=' ')
print(z)

#task1-2
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3')) 
print('x1 = {:>15.1f}, y1 = {:>15.1f}'.format(x1, y1)) 
print('x2 = {:>15.1f}, y2 = {:>15.1f}'.format(x2, y2))

#task1-3
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*'=')

 

#task2-1
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)

#task 2-2
x, y = eval(input('Enter two oprands: ')) 
ans = x + y
print(f'{x} + {y} = {ans}')
print(f'{type(x)} + {type(y)} = {type(ans)}')

#task 3
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}')

#task 4
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'))

#task 5-1
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}') 

#task 5-2
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...')

#task 6
n = float(input('输入一个数:'))
ans1 = n**365
print('{:.2f}的365次方: {:.2f}'.format(n, ans1))

#task 7
import math
ρ,c,K,M,Tw,Ty,T0=1.038,3.7,5.4*(10**(-3)),67,100,70,int(input('输入温度：'))
t=((M**(2/3)*c*ρ*(1/3))/(K*math.pi**2*(4*math.pi/3)**(2/3)))*math.log(0.76*(T0-Tw)/(Ty-Tw))
minute=math.floor(math.ceil(t)/60)
second=math.ceil(t)-minute*60
print('T0','=',T0,',','t','=',minute,'分',second,'秒')