1、占位符和格式化输出
示例代码
1 #格式化输出 2 # % s d 3 # name = input('请输入姓名') 4 # age = input('请输入年龄') 5 # height = input('请输入身高') 6 # msg = "我叫%s,今年%s 身高 %s" %(name,age,height) 7 # print(msg) 8 """ 9 name = input('请输入姓名:') 10 age = input('请输入年龄:') 11 job = input('请输入工作:') 12 hobbie = input('你的爱好:') 13 14 msg = '''------------ info of %s ----------- 15 Name : %s 16 Age : %d 17 job : %s 18 Hobbie: %s 19 ------------- end -----------------''' %(name,name,int(age),job,hobbie) 20 print(msg) 21 """ 22 name = input('请输入姓名') 23 age = input('请输入年龄') 24 height = input('请输入身高') 25 msg = "我叫%s,今年%s 身高 %s 学习进度为3%%s" %(name,age,height) 26 print(msg)
2、while else语句
1 count = 0 2 while count <= 5 : 3 count += 1 4 if count == 3:break 5 print("Loop",count) 6 7 else: 8 print("循环正常执行完啦") 9 print("-----out of while loop ------")
3、逻辑运算
1 #and or not 2 #优先级,()> not > and > or 3 # print(2 > 1 and 1 < 4) 4 # print(2 > 1 and 1 < 4 or 2 < 3 and 9 > 6 or 2 < 4 and 3 < 2) 5 # T or T or F 6 #T or F 7 # print(3>4 or 4<3 and 1==1) # F 8 # print(1 < 2 and 3 < 4 or 1>2) # T 9 # print(2 > 1 and 3 < 4 or 4 > 5 and 2 < 1) # T 10 # print(1 > 2 and 3 < 4 or 4 > 5 and 2 > 1 or 9 < 8) # F 11 # print(1 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6) # F 12 # print(not 2 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6) # F 13 14 #ps int ----> bool 非零转换成bool True 0 转换成bool 是False 15 # print(bool(2)) 16 # print(bool(-2)) 17 # print(bool(0)) 18 # #bool --->int 19 # print(int(True)) # 1 20 # print(int(False)) # 0 21 22 23 '''x or y x True,则返回x''' 24 # print(1 or 2) # 1 25 # print(3 or 2) # 3 26 # print(0 or 2) # 2 27 # print(0 or 100) # 100 28 29 30 # print(2 or 100 or 3 or 4) # 2 31 32 # print(0 or 4 and 3 or 2) 33 '''x and y x True,则返回y''' 34 # print(1 and 2) 35 # print(0 and 2) 36 print(2 or 1 < 3) 37 print(3 > 1 or 2 and 2)