作业。。。又有错误

小龙居会吐泡泡QAQ

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

deta=b**2-4*a*c

if deta >= 0:

x1 = (-b+math.sqrt(deta))/(2*a)

x2 = (-b-math.sqrt(deta))/(2*a)

return x1 ,x2

else：

return '无实数根'

错误显示

File "C:\Users\JYY\AppData\Local\Temp\learn_python_vy1yzmbf_py\test_18.py", line 11

else：

^

SyntaxError: invalid character in identifier

但是注释掉else两行就没问题

deta=b**2-4*a*c

if deta >= 0:

x1 = (-b+math.sqrt(deta))/(2*a)

x2 = (-b-math.sqrt(deta))/(2*a)

return x1 ,x2

#else：

# return '无实数根'

quadratic(2, 3, 1) = (-0.5, -1.0)

quadratic(1, 3, -4) = (1.0, -4.0)

测试成功

李雄Yock

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

这节课是要定义函数的。。。。

#!/usr/bin/env python3

# -*- coding: UTF-8 -*-

import math

a = float(input('a='))

b = float(input('b='))

c = float(input('c='))

deta=b**2-4*a*c

if deta >=0:

x1 = (-b+math.sqrt(deta))/(2*a)

x2 = (-b-math.sqrt(deta))/(2*a)

print (x1,x2)

else:

print ('无实数根')

小龙居会吐泡泡QAQ

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

我只粘了一部分代码，主要是为什么我的 else 部分代码有错QAQ

1分钟有59秒

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

贴完整代码

小龙居会吐泡泡QAQ

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

import math

def quadratic(a, b, c):

deta=b**2-4*a*c

if deta >= 0:

x1 = (-b+math.sqrt(deta))/(2*a)

x2 = (-b-math.sqrt(deta))/(2*a)

return x1 ,x2

else：

return'无实数根'

小龙居会吐泡泡QAQ

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

File "C:\Users\JYY\AppData\Local\Temp\learn_python_c70i69lt_py\test_1.py", line 11

else：

^

SyntaxError: invalid character in identifier

小龙居会吐泡泡QAQ

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

好吧因为我else那里用了中文冒号哈哈哈哈哈。。。。现在变成了

deta=b**2-4*a*c

if deta >= 0:

x1 = (-b+math.sqrt(deta))/(2*a)

x2 = (-b-math.sqrt(deta))/(2*a)

return x1 ,x2

else:

return'无实数根'

File "C:\Users\JYY\AppData\Local\Temp\learn_python_c70i69lt_py\test_15.py", line 11

else:

^

SyntaxError: invalid syntax

1分钟有59秒

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

return x1,x2这行缩进有问题，if和else对齐，return应该和x2 = (-b-math.sqrt(deta))/(2*a)这一行对齐。

作业。。。又有错误

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