[問題] float object not callable

看板Python作者Strogatz (@ Home)時間13年前 (2012/03/23 12:54)推噓0(0推 0噓 11→)

留言11則, 3人參與討論串1/1

問題似乎主要在function2的設計？ import math import time from pylab import * class vec(object): def __init__(self, x, y, z): self.vec=(x, y, z) def distance(self): self.a=self.vec[0] self.b=self.vec[1] self.c=self.vec[2] return math.sqrt(self.a**2+self.b**2+self.c**2) def unit(self): dis=self.distance() self.aunit=self.a/dis self.bunit=self.b/dis self.cunit=self.c/dis return self.aunit, self.bunit, self.cunit def add(self, vector1, vector2): self.sum=(vector1[0]+vector2[0], vector1[1]+vector2[1], vector1[2]+vector2[2]) return self.sum def addfour(self, vec1, vec2, vec3, vec4): comebine1=vector.add(vec1,vec2) comebine2=vector.add(vec3,vec4) self.outcome=vector.add(comebine1, comebine2) return self.outcome def smultiply(self,scalar, vec): self.product=(scalar*vec[0],scalar*vec[1],scalar*vec[2]) return self.product def innerproduct(self, vec1, vec2): self.innerproduct=(vec1[0]*vec2[0]+vec1[1]*vec2[1]+vec1[2]*vec2[2]) return self.innerproduct def crossproduct(self, vec1, vec2): self.crossproduct=(vec1[1]*vec2[2]-vec1[2]*vec2[1], vec1[2]*vec2[0]-vec1[0]*vec2[2], vec1[0]*vec2[1]-vec1[1]*vec2[0]) return self.crossproduct def function2(self, vec1, vec2): self.coef1=c1*self.innerproduct(vec2, vec2) self.term1=self.smultiply(self.coef1, vec2) self.term2=self.smultiply(c2,self.crossproduct(vec2,vec1)) self.term3=self.smultiply(c3,(0,0,1)) self.term4=self.smultiply(c4*vec1[2],vec1) self.sumoffour=self.addfour(self.term1,self.term2,self.term3,self.term4) self.outcome=self.smultiply(h, self.sumoffour) return self.outcome def rungekutta1(self,vec1,vec): self.k11=self.smultiply(h,vec) self.k11_half=self.smultiply(.5, self.k11) self.y12=self.add(vec, self.k11_half) self.k12=self.smultiply(h,self.y12) self.k12_half=self.smultiply(.5, self.k12) self.y13=self.add(vec, self.k12_half) self.k13=self.smultiply(h,self.y13) self.y14=self.add(vec, self.k13) self.k14=self.smultiply(h,self.y14) self.k12_double=self.smultiply(2.0, self.k12) self.k13_double=self.smultiply(2.0, self.k13) self.k1s=self.addfour(self.k11, self.k12_double, self.k13_double, self.k14) self.n_next=self.add(vec1, self.smultiply(1.0/6, self.k1s)) return self.n_next def rungekutta2(self, vec1, vec2): self.k21=self.function2(vec1, vec2) self.n21=self.add(vec1,self.smultiply(.5*h,(1,1,1))) self.d_n21=self.add(vec2,self.smultiply(.5,self.k21)) #self.k22=self.function2((0,0,0),(0,0,0)) return self.d_n21 c1=-1.0 c2=-1.0 c3=1.0 c4=-1.0 h=.00001 vector=vec(1,2,3) allone=vec(1.0,1.0,1.0) n=(1.0,1.0,1.0) d_n=(1.0,-1.0,0.0) #print vector.rungekutta1(n, d_n) #print vector.add(n,vector.smultiply(h+(h**2)/2+(h**3)/6+(h**4)/24, d_n)) #print vector.function2(n, d_n) #print vector.rungekutta2(n, d_n) k21=vector.function2(n, d_n) n21=vector.add(n, vector.smultiply(.5*h,(1,1,1))) d_n21=vector.add(d_n, vector.smultiply(.5,k21)) print n21, d_n21 print vector.function2(n21, d_n21) 不知道為何這樣會顯示錯誤訊息？ Traceback (most recent call last): File "D:\Python\spinningtop.py", line 105, in <module> k21=vector.function2(n, d_n) File "D:\Python\spinningtop.py", line 38, in function2 self.coef1=c1*self.innerproduct(vec2, vec2) TypeError: 'float' object is not callable 然後我發現如果拿掉下面全部，只執行 print vector.function2(n, d_n) 是可以跑出來的但如果加上綠色任何一條，就失敗了，顯示float object not callable 不知道問題出在哪裡，謝謝。orz -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.36.20.117 ※ 編輯: Strogatz 來自: 114.36.20.117 (03/23 13:51)