1 #author:leon
2 #"hello world!"
3 
4  for   i  in  range(10):  #循環十次,每一次循環賦一個0-9中的數字給i 。
5      print("-------",i)

1 for   i  in  range(2,8,2):  #循環八次，從2-8，間隔（步幅）為2 。
2     print("-------",i)

 1 age_of_oldboy = 56
 2 count =0
 3 for  i in range(3):
 4     guess_age = int(input("guess age:"))
 
 5     if guess_age == age_of_oldboy:
 6         print("yes,you got  it...")
 7         break
 8     elif  guess_age > age_of_oldboy:
 9         print("think smaller...")
10     else:
11         print("think bigger....")
12     count +=1
13     if  count ==3:
14         print("you try  too many  times
 
")

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