#!/usr/bin/python
import math
def quadratic(a, b, c): r =bb - 4ac if r > 0: x1 = (-b + math.sqrt(r)) / (2a) x2 = (-b - math.sqrt(r)) / (2*a) return x1,x2 else: print('无解')
print('quadratic(2, 3, 1) =', quadratic(2, 3, 1)) print('quadratic(1, 3, -4) =', quadratic(1, 3, -4))
if quadratic(2, 3, 1) != (-0.5, -1.0): print('测试失败') elif quadratic(1, 3, -4) != (1.0, -4.0): print('测试失败') else: print('测试成功')
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#!/usr/bin/python
-- coding: UTF-8 --
import math
def quadratic(a, b, c): r =bb - 4ac if r > 0: x1 = (-b + math.sqrt(r)) / (2a) x2 = (-b - math.sqrt(r)) / (2*a) return x1,x2 else: print('无解')
测试:
print('quadratic(2, 3, 1) =', quadratic(2, 3, 1)) print('quadratic(1, 3, -4) =', quadratic(1, 3, -4))
if quadratic(2, 3, 1) != (-0.5, -1.0): print('测试失败') elif quadratic(1, 3, -4) != (1.0, -4.0): print('测试失败') else: print('测试成功')