任务一

1 print('hey, u')
 2 
 3 
 4 print('hey','u')
 5 x,y,z=1,2,3
 6 print(x, y, z)
 7 
 8 
 9 print('x=%d, y=%d, z=%d'%(x,y,z))    
10 print('x = {}, y = {}, z = {}'.format(x,y,z))    
11 print(f'x = {x}, y = {y}，z = {z}')    
12 
13 
14 print(x)     
15 print(y)
16 print(z)
17 
18 print(x, end=' ')      
19 print(y, end=' ')
20 print(z)

 1 x1, y1 = 1.2, 3.57
 2 x2, y2 = 2.26, 8.7
 3 
 4 print('{:-^40}'.format(''))
 5 print('x1 = {}, y1 = {}'.format(x1, y1))
 6 print('x2 = {}, y2 = {}'.format(x2, y2))
 7 
 8 print('{:-^40}'.format(''))
 9 print('x1 = {:.1f}, y1 = {:.1f}'.format(x1, y1))
10 print('x2 = {:.1f}, y2 = {:.1f}'.format(x2, y2))
11 
12 print('{:-^40}'.format(''))
13 print('x1 = {:<15.1f}, y1 = {:<15.1f}'.format(x1, y1))
14 print('x2 = {:<15.1f}, y2 = {:<15.1f}'.format(x2, y2))
15 
16 print('{:-^40}'.format(''))
17 print('x1 = {:>15.1f}, y1 = {:>15.1f}'.format(x1, y1))
18 print('x2 = {:>15.1f}, y2 = {:>15.1f}'.format(x2, y2))

1 name1, age1 = 'Bill', 19
2 name2, age2 = 'Hellen', 18
3 title = 'Personnel Information'
4 print(f'{title:=^40}')
5 print(f'name: {name1:10}, age: {age1:3}')
6 print(f'name: {name2:10}, age: {age2:3}')
7 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)

1 x, y = eval(input('Enter two oprands: '))
2 ans = x + y
3 print(f'{x} + {y} = {ans}')
4 print(f'{type(x)} + {type(y)} = {type(ans)}')

1 ans1 = 0.1 + 0.2
2 print(f'0.1 + 0.2 = {ans1}')
3 from decimal import Decimal
4 ans2 = Decimal('0.1') + Decimal('0.2')
5 print(f'0.1 + 0.2 = {ans2}')

精度不同，电脑是二进制

 print(chr(0x1f600), end = " ")
 2 print(chr(0x1f601), end = " ")
 3 print(chr(0x1f602), end = " ")
 4 print(chr(0x1f603), end = " ")
 5 print(chr(0x1f604))
 6 print(chr(10000), end=" ")
 7 print(chr(0x025b), end=" ")
 8 print(chr(0x2708), end=" ")
 9 print(chr(0x00A5), end=" ")
10 print(chr(0x266b))
11 print(ord('a'), end = " ")
12 print(ord('b'), end = " ")
13 print(ord('c'))
14 print(ord('A'), end = " ")
15 print(ord('B'), end = " ")
16 print(ord('C'))
17 print(ord('0'), end = " ")
18 print(ord('1'), end = " ")
19 print(ord('2'))

1 from math import sqrt
2 n = float(input('输入一个数:'))
3 ans1 = sqrt(n)
4 ans2 = n**0.5
5 print('%.2f的平方根是: %.2f' %(n, ans1))
6 print('{:.2f}的平方根是: {:.2f}'.format(n, ans2))
7 print(f'{n:.2f}的平方根是: {ans2:.2f}')

 1 from math import pi
 2 text = '''
 3 好奇心是人的天性。
 4 理想情况下，学习新东西是让人愉快的事。
 5 但学校里的学习似乎有点像苦役。
 6 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。
 7 '''
 8 print(text)
 9 r = float(input('给学习画一个大饼，大饼要做的很大，半径要这么大: '))
10 circle = 2*pi*r
11 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...')

1 x = eval(input ('请输入一个数字：'))
2 y = x**365
3 print(y)

 1 P=1.038
 2 c=3.7
 3 K=5.4*10**(-3)
 4 M=67
 5 Tw=100
 6 Ty=70
 7 T0 = eval(input ('请输入一个数字T0：'))
 8 from math import log
 9 from math import pi
10 t=(((M**(2/3))*c*(P**(1/3)))/(K*pi*pi*((4*pi/3)**2/3)))*log(0.76*(T0-Tw)/(Ty-Tw))
11 m=int(t/60)
12 n=int(t-m*60)
13 print(f'T0={T0}℃,t={m}分{n}秒')