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伊谢尔伦休伯利安

#1 Created at ... [Delete] [Delete and Lock User] 
def qua(a,b,c):
    deta = b*b - 4*a*c
    if a == 0:
        x = -c/b
    if deta <0:
        return 'deta不能小于0'
    else:
        x1 = (-b + math.sqrt(deta))/(2*a)
        x2 = (-b - math.sqrt(deta))/(2*a)
        return x1 , x2

我在之前已经import math了，为什么还一直提示我name 'math' is not defined

伊谢尔伦休伯利安

#2 Created at ... [Delete] [Delete and Lock User]

复制进去就没有问题，但是存为qua.py 用from qua import qua使用的话就会提示math没有定义，我已经import math过了，求大神解答，都睡不着了

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