Differences between revisions 194 and 203 (spanning 9 versions)
⇤ ← Revision 194 as of 2012-05-16 13:38:16 →
Size: 922
Editor: daxian001
Comment:
← Revision 203 as of 2013-12-17 14:04:40 → ⇥
Size: 1841
Editor: lengxuezhixuan
Comment:
Deletions are marked like this. Additions are marked like this.
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MyNewPage
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'自己编写的一个小小简单python程序' '自己编写的一个小小简单python程序' 为什么没缩进啊？？？？
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''''''#ax^2+bx+c=0 解二次方程的根''' '''#ax^2+bx+c=0 解二次方程的根<<BR>>import math<<BR>>def getroot(a,b,c):<<BR>> if a==0:<<BR>> if b!=0:<<BR>> r1=r2=-c/b<<BR>> else:<<BR>> r1=r2=None<<BR>> print('a,b,c!=0')<<BR>> else:<<BR>> d=b**2-4*a*c<<BR>> e1=-b+math.sqrt(abs(d))<<BR>> e2=-b-math.sqrt(abs(d))<<BR>> if d>0:<<BR>> r1=e1/(2*a)<<BR>> r2=e2/(2*a)<<BR>> elif d==0:<<BR>> r1=r2=-b/(2*a)<<BR>> else:<<BR>> r1=r2=None<<BR>> print('无根')<<BR>> return(r1,r2)'''
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'''import math '''a=['a','b','c']<<BR>>b=[0,0,0]<<BR>>for i in range(3):<<BR>> a[i]=input("please float integer %s="%a[i])<<BR>> if a[i]:<<BR>> try:<<BR>> b[i]=float(a[i])<<BR>> except ValueError as err:<<BR>> print(err)<<BR>> break<<BR>>if ValueError:<<BR>> pass<<BR>>else: print('方程的根为:',getroot(b[0],b[1],b[2]))<<BR>>'''
#coding:utf-8

import math
Line 14: Line 17:
    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))
Line 15: Line 27:
 . 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)		     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)
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 . a[i]=input("please float integer %s="%a[i])
 . if a[i]:
  . try:
   . j=float(a[i])
  except ValueError as err:
   . print(err) break
 b[i]=j
 . print('方程的根为:',getroot(b[0],b[1],b[2]))
 . '''

'''		     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]))

MyNewPage '刚入门，你还要留我多长时间？才肯放我晋级行者啊！！！！'

'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]))

["PythonLearningPlan"] ["MyNewPage"]

WikiSandBox (last edited 2013-12-17 14:04:40 by lengxuezhixuan)