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'自己编写的一个小小简单python程序' 为什么没缩进啊？？？？

#ax^2+bx+c=0 解二次方程的根
import math
def getroot(a,b,c):
if a==0:
if b!=0:
r1=r2=-c/b
else:
r1=r2=None
print('a,b,c!=0')
else:
d=b**2-4*a*c
e1=-b+math.sqrt(abs(d))
e2=-b-math.sqrt(abs(d))
if d>0:
r1=e1/(2*a)
r2=e2/(2*a)
elif d==0:
r1=r2=-b/(2*a)
else:
r1=r2=None
print('无根')
return(r1,r2)

a=['a','b','c']
b=[0,0,0]
for i in range(3):
a[i]=input("please float integer %s="%a[i])
if a[i]:
try:
b[i]=float(a[i])
except ValueError as err:
print(err)
break
if ValueError:<<BR>> pass
else: print('方程的根为:',getroot(b[0],b[1],b[2]))
#coding:utf-8

import math

def getroot(a,b,c):

• if a==0:
  • if b!=0:
    • r1=r2=-c/b
    else:
    • r1=r2=None print('a,b,c!=0')
  else:
  • d=b**2-4*a*c
  e1=-b+math.sqrt(abs(d)) e2=-b-math.sqrt(abs(d))

  if d>0:

  • r1=e1/(2*a) r2=e2/(2*a)
  elif d==0:
  • r1=r2=-b/(2*a)
  else:
  • r1=r2=None print('无根') return(r1,r2)

a=['a','b','c']

b=[0,0,0]

for i in range(3):

• a[i]=input("please float integer %s="%a[i]) if a[i]:
  • try:
    • b[i]=float(a[i])

    except ValueError as err:

    • print(err) break

    if ValueError:

    • pass
    else:
    • print('方程的根为:',getroot(b[0],b[1],b[2]))

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