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easyMath.py
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40 lines (34 loc) · 998 Bytes
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from operator import add,sub
from random import randint,choice
ops ={"+":add,"-":sub}
MAXTRIES = 2
def doprob():
op = choice('+-')
nums = [randint(1,10) for i in range(2)]
nums.sort(reverse = True)
ans = ops[op](*nums)
pr="%d %s %d =" %(nums[0],op,nums[1])
oops =0
while True:
try:
if int(raw_input(pr)) == ans:
print "corrent"
break
if oops == MAXTRIES:
print "answer \n %s%d" %(pr,ans)
else:
print "incorrent...try again"
oops += 1
except (KeyboardInterrupt, EOFError,ValueError):
print "invalid input ... try again"
def main():
while True:
doprob()
try:
opt= raw_input("Again?[y]".lower())
if opt and opt[0] == "n":
break
except (KeyboardInterrupt,EOFError):
break
if __name__ == "__main__":
main()