用python 写一个简单计算代码-------急急急急！！ 求大师 用Python写一个，两个数的加，减，乘，除的函数，然后用这...

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def cal(): numA = float(raw_input('Please enter a number: ')) op = raw_input('Please enter a operator: ') numB = float(raw_input('Please enter another number: ')) if op == '+': print "result: ",numA+numB elif op == '-': print "result: ",numA-numB elif op == '*': print "result: ",numA*numB elif op == '/': print "result: ",numA/numB else: print "Unknown operator ",opcal()

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def f_add(a,b): return a+bdef f_mul(a,b): return a*bdef f_sub(a,b): return a-b def g1(f,a,b): return f(a,b)a,b,c,d = 1,2,3,4print g1(f_sub, g1(f_mul, g1(f_add,a,b), c), d), g1(f_mul, g1(f_add,a,b), g1(f_sub,c, d))
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study.163.com/course/courseMain.htm?courseId=1000035

def getInteger(prompt, lowerlimit=0, upperlimit=None):
    while True:
        try:
            num = int(raw_input(prompt))
            if num < lowerlimit:
                print "outof lower band", lowerlimit
                continue
            if upperlimit and upperlimit < num:
                print "outof upper band", upperlimit
                continue
            return num
        except:
            continue


nums = sorted([
    getInteger("Enter a number, which bigger than 0: "),
    getInteger("Enter a number, which bigger than 0: "),
    ])

msg = "%d can not be deved by %d" if nums[1] % nums[0] else "%d can be deved by %d"
print msg % (nums[1], nums[0])

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