Python Lists [ ] [SOLVED]
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On 17/12/2014 at 07:31, xxxxxxxx wrote:
Say I have three Lists:
list_A = [(1,2,3,4,5), (1,2,3,4,5)]
list_B = [(1,2,6,7,5), (1,2,6,7,5)]
list_C = [ ]1] I want to compare "list_A" and "list_B"
2] Then append "list_C" by taking the duplicates and turn them to "0"list_C = [(0,0,6,7,0),(0,0,6,7,0)]
I have tried set(list_A) - set(list_B) to compare but it doesn't work
Any help please
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On 17/12/2014 at 08:02, xxxxxxxx wrote:
This is how I would do it by comparing the same index of each list:
list_A = [1,2,3,4,5] list_B = [1,2,6,7,5] list_C = [ ] for i in range(len(list_A)) : if list_A[i] == list_B[i]: list_C.append(0) else: list_C.append(list_B[i]) print list_C -
On 17/12/2014 at 08:09, xxxxxxxx wrote:
@ShawnFrueh
I have update my post a little, sorry
I will take a look if your solution works tonight, thanks
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On 17/12/2014 at 12:09, xxxxxxxx wrote:
To explain better I want to achieve this.
This script is to move certain points of my cube with python but this script is a little long and I'm sure there is a simpler shorter way to do this.obj = doc.SearchObject("Null") poly = doc.SearchObject("Polygon") Points_List = [" 0, -100, -100, -100 ", " 1, -100, 100, -100 ", " 2, 100, -100, -100 ", " 3, 100, 100, -100 ", " 4, 100, -100, 100 ", " 5, 100, 100, 100 ", " 6, -100, -100, 100 ", " 7, -100, 100, 100 "] Targ_List = [" 0, -100, -100, -100 ", " 1, -100, 60.326, -100 ", " 2, 100, -100, -100 ", " 3, 100, 100, -59.691 ", " 4, 100, -100, 100 ", " 5, 100, 165.287, 100 ", " 6, -100, -100, 100 ", " 7, -100, 15.892, 100 "] cntrl = obj[c4d.ID_USERDATA,1] N_des_list = [] cmp_L_A = [] for i,line in enumerate(Points_List) : in_L = Points_List[i] in_line = in_L.split(",") in_nr = int(in_line[0]) in_vec_X = float(in_line[1]) in_vec_Y = float(in_line[2]) in_vec_Z = float(in_line[3]) tar_L = Targ_List[i] tar_line = tar_L.split(",") tar_nr = int(tar_line[0]) tar_vec_X = float(tar_line[1]) tar_vec_Y = float(tar_line[2]) tar_vec_Z = float(tar_line[3]) if in_vec_X == tar_vec_X: N_x = 0 else: N_x = tar_vec_X if in_vec_Y == tar_vec_Y: N_y = 0 else: N_y = tar_vec_Y if in_vec_Z == tar_vec_Z: N_z = 0 else: N_z = tar_vec_Z N_des_list.append(c4d.Vector(N_x,N_y,N_z)) for line in Points_List: coord = line.split(",") nr = int(coord[0]) Vec_X = float(coord[1]) Vec_Y = float(coord[2]) Vec_Z = float(coord[3]) cmp_L_A.append(c4d.Vector(Vec_X,Vec_Y,Vec_Z)) for i in range(len(cmp_L_A)) : morph = cntrl*N_des_list[i] + cmp_L_A[i] poly.SetPoint(i,morph) poly.Message(c4d.MSG_UPDATE) -
On 18/12/2014 at 03:01, xxxxxxxx wrote:
Hello,
the way Shawn show it, is a good way to go.
A few tips
For an enumeration you don´t need an index in your List.
If you use a vector you can access the coordinates with e.g vec = c4d.Vector(3,0,0) vec.x=3.
in xrange is faster.
You might use your slider control directly in the xrange iteration, therefore you don´t need to iterate twice and the list number 3 is not necessary.
But to get started:import c4d def main() : List_1=[c4d.Vector(0,1,0),c4d.Vector(5,2,0),c4d.Vector(3,0,3)] List_2=[c4d.Vector(1,1,0),c4d.Vector(5,2,0),c4d.Vector(0,3,0)] List_3=[] for i in xrange(len(List_2)) : if List_2[i].x == List_1[i].x: List_2[i].x=0 if List_2[i].y == List_1[i].y: List_2[i].y=0 if List_2[i].z == List_1[i].z: List_2[i].z=0 List_3.append(List_2[i]) print List_3 if __name__=='__main__': main()Best wishes
MartinEDIT:
If you do not write the list by your own and it is the type of list you show, than this is a way to access the items e.g.:
Points_List = [" 0, -100, -200, -100 ", " 1, -100, 100, -100 ", " 2, 100, -100, -100 "] #first member third item print Points_List[0].split(",")[2] -
On 18/12/2014 at 03:31, xxxxxxxx wrote:
Thanks Martin for all your help. Slowly but I'm getting there
