实验一

task1_1

print('hey,u')
hey,u
print('hey','u')
hey u
x,y,z=1,2,3
print(x,y,z)
1 2 3

print('x = %d, y = %d, z = %d' %(x,y,z))
x = 1, y = 2, z = 3
print('x = {}, y = {}, z = {}'.format(x,y,z))
x = 1, y = 2, z = 3
print(f'x = {x}, y = {y}, z = {z}')
x = 1, y = 2, z = 3

print(x)
1
print(y)
2
print(z)
3

print(x, end=' ')
1 
print(y, end=' ')
2 
print(z)
3

task1_2

x1,y1=1.2,3.57
x2,y2=2.26,8.7
print('{:-^40}'.format('输出1'))
------------------输出1-------------------
print('x1 = {}, y1 = {}'.format(x1, y1))
x1 = 1.2, y1 = 3.57
print('x2 = {}, y2 = {}'.format(x2, y2))
x2 = 2.26, y2 = 8.7

print('{:-^40}'.format('输出2'))
------------------输出2-------------------
print('x1 = {:.1f}, y1 = {:.1f}'.format(x1, y1))
x1 = 1.2, y1 = 3.6
print('x2 = {:.1f}, y2 = {:.1f}'.format(x2, y2))
x2 = 2.3, y2 = 8.7

print('{:-^40}'.format('输出3'))
------------------输出3-------------------
print('x1 = {:<15.1f}, y1 = {:<15.1f}'.format(x1, y1))
x1 = 1.2            , y1 = 3.6            
print('x2 = {:<15.1f}, y2 = {:<15.1f}'.format(x2, y2))
x2 = 2.3            , y2 = 8.7            

print('{:-^40}'.format('输出3'))
------------------输出3-------------------
print('x1 = {:>15.1f}, y1 = {:>15.1f}'.format(x1, y1))
x1 =             1.2, y1 =             3.6
print('x2 = {:>15.1f}, y2 = {:>15.1f}'.format(x2, y2))
x2 =             2.3, y2 =             8.7

task1_3

name1, age1 = 'Bill', 19
name2, age2 = 'Hellen', 18
title = 'Personnel Information'

print(f'{title:=^40}')
=========Personnel Information==========
print(f'name: {name1:10} age: {age1:3}')
name: Bill       age:  19
print(f'name: {name2:10} age: {age2:3}')
name: Hellen     age:  18
print(40*'=')
========================================

实验结论：

1，用print输出字符或字符串时需加'',输出数字与参数时则不需。print中用“，”分隔的数据，在输出后由空格分开。将x,y,z=1,2,3变为x=1,y=2,z=3可用c方法，format,f-string来实现

2，print({:-^x}.format('A'))可实现宽度占x列，A居中,空白由-补齐。{:.1f}可让数字保留一位小数。

3，print(f'{A:=^x}')一样可实现输出宽度占x列，A居中对齐，用=填充空白