最后一句str的作用是什么?
for x in [ 1,2,3,4,5,6,7,8,9 ]:
for y in [ 1,2,3,4,5,6,7,8,9 ]:
if x<y:
print str(x)+str(y)
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for x in [ 1,2,3,4,5,6,7,8,9 ]:
for y in [ 1,2,3,4,5,6,7,8,9 ]:
if x<y:
print str(x)+str(y)
2017-01-21
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