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https://github.com/heqin-zhu/algorithm.git
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33 lines
586 B
Python
33 lines
586 B
Python
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from random import randint
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def genOp(li):
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return li[randint(0, len(li)-1)]
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def genNum(n=20):
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return randint(1, n)
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def genFactor(n=3):
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n = randint(1, n)
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ret = [str(genNum())]
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for i in range(n):
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ret.append(genOp('*/'))
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ret.append(str(genNum()))
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return ''.join(ret)
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def genExpr(n=8):
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n = randint(3, n)
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ret = [genFactor()]
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for i in range(n):
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ret.append(genOp('+-'))
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ret.append(genFactor())
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return ' '.join(ret)
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if __name__ == '__main__':
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s = genExpr()
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print('evaluate "{}" == {}'.format(s, eval(s)))
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