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'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
- r1=r2=None print('a,b,c!=0')
- 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)
- r1=r2=-b/(2*a)
- r1=r2=None print('无根')
- if b!=0:
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
- try:
print('方程的根为:',getroot(b[0],b[1],b[2]))
["PythonLearningPlan"] ["MyNewPage"]