实验1 Python环境的使用和初体验

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四.实验结论

1.实验任务1

task1_1.py

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

task1_2.py

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

task1_3.py

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*'=')

2.实验任务2

task2-1.py

1 r1 = eval('1 + 2') 
2 print(type(r1), r1)
3 r2 = eval('[1, 6, 7.5]') 
4 print(type(r2), r2)
5 r3 = eval('"python"') 
6 print(type(r3), r3)
7 r4 = eval('7, 42') 
8 print(type(r4), r4)

task2-2.py

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)}')

3.实验任务3

task3.py

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}')

4.实验任务4、

task4.py

 1 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'))

5.实验任务5

task5-1.py

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}') 

task5-2.py

 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...')

6.实验任务6

task6.py

1 x=float(input("从键盘输入："))
2 y=x**(365)
3 print(x,"的365次方:",y)

7.实验任务7

task7.py

 1 from math import pi
 2 from math import log
 3 p=1.038
 4 c=3.7
 5 K=5.4*10**(-3)
 6 M=67
 7 Tw=100
 8 Ty=70
 9 To=float(input("从键盘输入To=："))
10 t=(M**(2/3)*c*p**(1/3))/(K*pi**2*((4*pi)/3)**(2/3))*log(0.76*((To-Tw)/(Ty-Tw)))
11 print(f"To={To}°C,t={t//60}分{t%60}秒")

 实验总结

本次实验回顾了math库中函数的调用。比如math.pi,math.log(x)。；Decimal库中Decimal()的调用。除此以外，对输出内容的宽度以及精度也进行了熟悉。

很多内容由于不用导致忘了，但经过复习后又进一步掌握了。

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标签：初体验,end,format,Python,py,chr,实验,print,ord
来源： https://www.cnblogs.com/xhj060/p/16065265.html