实验1：python开发环境使用和编程初体验
实验任务1
运行结果：
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 1, y1 = 1.2, 3.57 2 x2, y2 = 2.26, 8.7 3 print('{:-^40}'.format('输出1')) # {:-^40}控制输出数据格式: 宽度占40列，居中对齐，空白处用-补齐 4 print('x1 = {}, y1 = {}'.format(x1, y1)) 5 print('x2 = {}, y2 = {}'.format(x2, y2)) 6 print('{:-^40}'.format('输出2')) # {:-^40}控制输出数据格式: 宽度占40列，居中对 齐，空白处用-补齐 7 print('x1 = {:.1f}, y1 = {:.1f}'.format(x1, y1)) # {:.1f}控制小数输出精度，保留 1位小数 8 print('x2 = {:.1f}, y2 = {:.1f}'.format(x2, y2)) 9 print('{:-^40}'.format('输出3')) # {:-^40} 控制输出数据格式: 宽度占40列，居中对 齐，空白处用-补齐 10 print('x1 = {:<15.1f}, y1 = {:<15.1f}'.format(x1, y1)) # {:<15.1f}控制数据输出 宽度占15列，小数部分占1列，左对齐，空白处默认补空格 11 print('x2 = {:<15.1f}, y2 = {:<15.1f}'.format(x2, y2)) 12 print('{:-^40}'.format('输出3')) # {:-^40} 控制输出数据格式: 宽度占40列，居中对 齐，空白处用-补齐 13 print('x1 = {:>15.1f}, y1 = {:>15.1f}'.format(x1, y1)) # {:>15.1f}控制数据输出 宽度占15列，小数部分占1列，右对齐，空白处默认补空格 14 print('x2 = {:>15.1f}, y2 = {:>15.1f}'.format(x2, y2)) 15 16
task1_3.py
1 name1, age1 = 'Bill', 19 2 name2, age2 = 'Hellen', 18 3 title = 'Personnel Information' 4 print(f'{title:=^40}') # 输出title的值，=^40指定输出宽度占40列，居中对齐，用=填充空 白 5 print(f'name: {name1:10}, age: {age1:3}') # 10和3分别指定数据项输出宽度 6 print(f'name: {name2:10}, age: {age2:3}') 7 print(40*'=') 8
task2_1.py
1 r1 = eval('1 + 2') # 相当于r1 = 1 + 2 2 print(type(r1), r1) 3 4 r2 = eval('[1, 6, 7.5]') #相当于r2 = [1, 6, 7.5] 5 print(type(r2), r2) 6 7 r3 = eval('"python"') # 相当于r3 = "python" 8 print(type(r3), r3) 9 10 r4 = eval('7, 42') # 相当于r4 = 7, 43 11 print(type(r4), r4) 12 13
task2_2.py
(1) 
1 x, y = eval(input('Enter two oprands:1,22.5 ')) # 输入的两个操作数之间用逗号分隔（英文半角 输入法下的逗号） 2 ans = x + y 3 print(f'{x} + {y} = {ans}') 4 print(f'{type(x)} + {type(y)} = {type(ans)}') 5
(2)
1 x, y = eval(input("Enter two oprands:'hi','python' ")) # 输入的两个操作数之间用逗号分隔（英文半角 输入法下的逗号） 2 ans = x + y 3 print(f'{x} + {y} = {ans}') 4 print(f'{type(x)} + {type(y)} = {type(ans)}') 5
(3)
1 x, y = eval(input("Enter two oprands:[1,2,3],[4,5,6] ")) # 输入的两个操作数之间用逗号分隔（英文半角 输入法下的逗号） 2 ans = x + y 3 print(f'{x} + {y} = {ans}') 4 print(f'{type(x)} + {type(y)} = {type(ans)}') 5
3.实验任务3
1 ans1 = 0.1 + 0.2 2 print(f'0.1 + 0.2 = {ans1}') 3 4 from decimal import Decimal 5 6 ans2 = Decimal('0.1') + Decimal('0.2') 7 print(f'0.1 + 0.2 = {ans2}')
4.实验任务4
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)) # ord()返回字符的unicode编码 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
