做本次实验时,初学Python,参考网上的代码,用Python写了一个
-- coding:utf-8 -- from random import randint sym = [‘ + ‘, ‘ - ‘] fobj = open(‘math.txt‘, ‘w‘) def base_exei_oneline(pmin, pmax, mmin, mmax, multimin, multimax, divmin, divmax): ‘‘‘ pmin,pmax:加数、被加数最小最大值 mmin,mmax:减法转换成加法后,加数、被加数最小最大值 multimin,multimax:乘数、被乘数最小最大值 divmin,divmax:除法转换成乘法后,乘数、被乘数最小最大值 ‘‘‘ plus = str(randint(pmin, pmax)).rjust(2) + ‘ + ‘ + str(randint(pmin, pmax)).rjust(2) + ‘ =‘ minus1 = randint(mmin, mmax) minus2 = randint(mmin, mmax) minussum = minus1 + minus2 minus = str(minussum).rjust(2) + ‘ - ‘ + str(minus1).rjust(2) + ‘ =‘ multi1 = randint(multimin, multimax) multi2 = randint(multimin, multimax) multi = str(multi1).rjust(2) + ‘ x ‘ + str(multi2).rjust(2) + ‘ =‘ div1 = randint(divmin, divmax) div2 = randint(divmin, divmax) divmulti = div1 * div2 div = str(divmulti).rjust(2) + ‘ /‘ + str(div1).rjust(2) + ‘ =‘ lineitem = [plus, minus, multi, div] line = (18 * ‘ ‘).join(lineitem) print line fobj.writelines(line + ‘\r\n‘) def base_exeicise(): for col in range(10): base_exei_oneline(1, 20, 1, 50, 1, 9, 1, 9) def type1_str(summin=1, summax=100): ‘‘‘ summin,summax:允许总和的最小最大值 ‘‘‘ sym1 = sym[randint(0, 1)] sym2 = sym[randint(0, 1)] if sym1 == ‘ + ‘ and sym2 == ‘ + ‘: sum_ = randint(summin + 2, summax) first = randint(summin, sum_ - 2) second = sum_ - first second = randint(summin, second - 1) third = sum_ - first - second elif sym1 == ‘ + ‘ and sym2 == ‘ - ‘: sum_ = randint(summin + 1, summax) first = randint(summin, sum_ - 1) second = sum_ - first third = randint(summin, sum_) elif sym1 == ‘ - ‘ and sym2 == ‘ + ‘: first = randint(summin + 1, summax) second = randint(summin, first) third = randint(first - second, summax) elif sym1 == ‘ - ‘ and sym2 == ‘ - ‘: first = randint(summin + 2, summax) second = randint(summin, first) third = first - second third = randint(summin, third) arithmetic = str(first).rjust(2) + sym1 + str(second).rjust(2) + sym2 + str(third).rjust(2) print arithmetic return arithmetic def type2_str(multimin=1, multimax=9, summin=1, summax=100): ‘‘‘ multimin,multimax:乘数、被乘数最小最大值 summin,summax:允许总和的最小最大值 ‘‘‘ sym1 = sym[randint(0, 1)] second = randint(multimin, multimax) third = randint(multimin, multimax) multi = second * third if sym1 == ‘ + ‘: first = randint(summin, summax - multi) else: first = randint(multi, summax) arithmetic = str(first).rjust(2) + sym1 + str(second).rjust(2) + ‘ x ‘ + str(third).rjust(2) print arithmetic return arithmetic def type3_str(multimin=1, multimax=9, summin=1, summax=100): ‘‘‘ multimin,multimax:乘数、被乘数最小最大值 summin,summax:允许总和的最小最大值 ‘‘‘ sym1 = sym[randint(0, 1)] second = randint(multimin, multimax) third = randint(multimin, multimax) multi = second * third if sym1 == ‘ + ‘: first = randint(summin, multi) second = multi - first else: second = randint(summin, summax - multi) first = multi + second arithmetic = ‘(‘ + str(first).rjust(2) + sym1 + str(second).rjust(2) + ‘)‘ + ‘ / ‘ + str(third).rjust(2) print arithmetic return arithmetic def oneday_homework(): base_exeicise() plus1 = type1_str() plus2 = type1_str() plus3 = type2_str() plus4 = type3_str() plus5 = type3_str() line = [plus1, plus2, plus3] lines = (29 * ‘ ‘).join(line) print lines fobj.writelines(lines + ‘\r\n‘ * 4) line = [plus4, plus5] lines = (20 * ‘ ‘).join(line) print lines fobj.writelines(lines + ‘\r\n‘ * 4) print fobj.writelines(r‘用时______分钟 对______题(共45题)‘) oneday_homework() fobj.writelines(‘\r\n‘ * 6)
同时上传GitHub: https://github.com/sacfwe/hello-world