Second grade math exercises generation of python3

Second grade math exercises generation

As a parent not easy

. 1 #coding: UTF- . 8 
2  Import Random
 . 3  # mathematical exercise second grade (by less than plus or minus 100)
 4  # of the generated title
 . 5 COUNT = 50 
. 6  # title per line
 . 7 lineNum = . 5 
. 8  the while COUNT> 0 :
 9      # 1 is added obtaining the symbol, to reduce 2, 3 by
 10      operator = the random.randint ( 1 , 3 )
 . 11      # obtain operands and the operation result
 12 is      STR = "" 
13 is      num1 num2 = result = = 0 
14      IF  operator == 3 : # multiplication formulas
15         num1 = random.randint(1,9)
16         num2 = random.randint(1,9)
17         result = num1*num2
18         str = "X"
19     elif operator == 2: #减法
20         num1 = random.randint(2,100)
21         num2 = random.randint(1,num1)
22         result = num1 - num2
23         str = "-"
24     else:               #加法
25         num1 = random.randint(1,100)
26         num2 = random.randint(0,100-num1)
27         result = num1 + num2
28         str = "+"
29     print("%d%s%d=\t\t" %(num1,str,num2),end = "")
30     count -= 1
31     if count%5 == 0:
32         print()