python开发环境和编程初体验

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

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))

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*'=')

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)

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}')

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 # ord()返回字符的unicode编码
12 print(ord('a'), end = " ")
13 print(ord('b'), end = " ")
14 print(ord('c'))
15 print(ord('A'), end = " ")
16 print(ord('B'), end = " ")
17 print(ord('C'))
18 print(ord('0'), end = " ")
19 print(ord('1'), end = " ")
20 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 ='''好奇心是人的天性。理想情况下，
3 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。
4 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。 '''
5 print(text)
6 r = float(input('给学习画一个大饼，大饼要做的很大，半径要这么大: '))
7 circle = 2*pi*r
8 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 for i in range(3):
2 x=eval(input())
3 y=x**365
4 print(f'{x}的365次方是{y}')

1 import math
2 from math import pi
3 M=[47,67]
4 for i in range(2):
5 p=1.038
6 c=3.7
7 K=5.4*10**(-3)
8 T=eval(input())
9 tw=100
10 ty=70
11 t=(pow(M[i],2/3)*c*pow(p,1/3))/(K*pow(pi,2)*pow((4*pi)/3,2/3))*math.log(0.76*(T-tw)/(ty-tw))
12 min=t//60
13 secOnd=round(t-min*60,2)
14
15 print(f'T={T}℃,t={min}分{second}秒')