实验1 Python开发环境使用和编程初体验

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)

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)）

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}')

原因 计算机采用二进制，计算小数会出现这种情况，用decimal可以换成十进制。避免该类问题。

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'))

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}')

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...')

x=input("请输入一个数")
x=float(x)
y=x**365
print("x的365次方是：",y)

p = 1.038
c = 3.7
k = 5.4*10**-3
M = 67
Tw = 100
Ty = 70
T0 = int(input('输入一个温度T0:'))
x = (0.76*((T0-Tw)/(Ty-Tw)))
n = log(x,e)
t = ((M**2/3)*c*(p**1/3))/(k*(pi**2)*((4*pi/3)**2/3))*n
m=int(t/60)
n=int(t-m*60)
print(f'T0={T0}℃,t={m}分{n}秒')

总结：很好，学会了。