实验1-7

本文主要是介绍实验1-7，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

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4'))
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 = 'personal information'
print(f'{title:=^40}')
print(f'name:{name1:10},age:{age1:3}')
print(f'name:{name2:10},age:{age2:3}')
print(40*'=')

总结：print()

1.print(x, y, z)

2.print('x = {}, y = {}, z = {}'.format(x,y,z))

3.print(f'name: {name1:10}, age: {age1:3}')

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)

task2_2

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

总结：eval()

1.r1 = eval('1 + 2')

2.x, y = eval(input('Enter two oprands: '))

task3

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}')

task4

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'))

总结：chr()和ord()是编码与相对符号之间转换的转换符

 task5_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}') 

task5_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...')

task6

x = eval(input('请输入数字:'))
y = x**365
print(x,'的365次方是:',y)

task7

from math import*
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
print('T0=',T0 , 't=',t)

实验总结：

通过本次实验我能够熟练的使用print()的各种表达形式与用法并能够在众多选择种择优使用，因而我的输入速度以及python思维有了很大进步，目前还存在的问题是我认为我的整个框架还没有建立，没有养成先思考再查阅的习惯，导致我遇到问题首先是想着去搜索一下或者询问同学，经过此次学习我更加丰富了我的基础知识，我相信我能够做到独立自主地去探索，我也要感谢帮助我的同学和老师，学习python真的能让我感到快乐！

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