#!/usr/bin/env python 
#-*- coding:utf-8 _*-  
""" 
@author:chenjisong 
@file: guess.py 
@time: 2019/04/16 
url:https://www.liaoxuefeng.com
functions:
Software:JetBrains PyCharm 4.5.3
"""
Name_Of_Oldboy = 56
count = 0
while count < 3:
    guess_age = int(input("please input your guess number:"))
    if guess_age == Name_Of_Oldboy:
        print("Yes,you got it.")
        break
    elif guess_age > Name_Of_Oldboy:
        print("think smaller.")
    else:
        print("think bigger.")
    count += 1
else:
    print("you have tried too many times!!!")
解释：当尝试的次数小于3的时候，走上面的代码。
     当尝试的次数大于3的时候，打印 you have tried too many times

第一周-第13章节-Python3.5-while 循环优化版本

#!/usr/bin/env python 
#-*- coding:utf-8 _*-  
""" 
@author:chenjisong 
@file: for.py 
@time: 2019/04/16 
url:https://www.liaoxuefeng.com
functions:
Software:JetBrains PyCharm 4.5.3
"""
Name_Of_Oldboy = 56
count = 0
for i in range(3):
    guess_age = int(input("please input your guess number:"))
    if guess_age == Name_Of_Oldboy:
        print("Yes,you got it.")
        break
    elif guess_age > Name_Of_Oldboy:
        print("think smaller.")
    else:
        print("think bigger.")
else:
    print("you have tried too many times!!!")

####任性玩：

#!/usr/bin/env python 
#-*- coding:utf-8 _*-  
""" 
@author:chenjisong 
@file: while.py 
@time: 2019/04/16 
url:https://www.liaoxuefeng.com
functions:
Software:JetBrains PyCharm 4.5.3
"""
Name_Of_Oldboy = 56
count = 0
#for i in range(3):
while count < 3:
    guess_age = int(input("please input your guess number:"))
    if guess_age == Name_Of_Oldboy:
        print("Yes,you got it.")
        break
    elif guess_age > Name_Of_Oldboy:
        print("think smaller.")
    else:
        print("think bigger.")
    count += 1
    if count == 3:
        continue_confirm = input("do you want to keep guessing...?")
        if continue_confirm != "N":
            count = 0
解释：当三次猜数都没有猜对且次数大于3时发出继续的确认信息，如果输入N,就退出，如果输入其他任意键，继续

第一周-第14章节-Python3.5-for 循环及作业要求

 continue:跳出本次循环进行下一次循环
 break :跳出整个循环

#!/usr/bin/env python 
#-*- coding:utf-8 _*-  
""" 
@author:chenjisong 
@file: chengfakoujue.py 
@time: 2019/04/16 
url:https://www.liaoxuefeng.com
functions:乘法口诀表
Software:JetBrains PyCharm 4.5.3
"""
for i in range(1,10):
    for j in range(1,i+1):
        print("%d * %d = %2d" % (j,i,j*i),end="     ")
    print (" ")

========================================================================

G:\Python3.7.3\python.exe G:/practise/oldboy/day1/chengfakoujue.py
1 * 1 = 1
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81

Process finished with exit code 0

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