Diff for "WikiSandBox" - Woodpecker Wiki for CPUG

Differences between revisions 188 and 191 (spanning 3 versions)

'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' #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:
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]))

["PythonLearningPlan"] ["MyNewPage"]

-  ⇤ ← Revision 188 as of 2011-09-08 04:04:21 → 
  Size: 201
  Editor: ZhongGuoqi
  Comment:
+   ← Revision 191 as of 2012-05-16 13:26:52 → ⇥
  Size: 1067
  Editor: daxian001
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 3:
-----
+----                                       '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'
'''
#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:
            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]))
'''
-Line 6:
+Line 44:
-= 网络编程 =
== 学习目标 ==

=== 第一阶段 ===

利用python建立一个包含数据库的简单网站
+["MyNewPage"]