我有一个对象列表：
Data:
0 RS_GCF_001999625.1
1 RS_GCF_001658645.1
2 RS_GCF_900117665.1
3 RS_GCF_000652055.1
4 RS_GCF_003037025.1
5 RS_GCF_002138225.1
6 RS_GCF_001186785.1
7 RS_GCF_001671475.1
8 RS_GCF_000153745.1
9 RS_GCF_002814015.1
10 GB_GCA_900471825.1
...
而且我还有一个系统发育树（一种树状数据结构），它是这样存储的
((((((((((((((((((((((((((((((((((((((((((((((((((((GB_GCA_900317315.1:0.04615,GB_GCA_900316815.1:0.04778)100.0:0.02419,GB_GCA_900317595.1:0.06625)33.0:0.0103,((GB_GCA_900316435.1:0.00693,GB_GCA_900318905.1:0.01341)96.0:0.00933,GB_GCA_900315195.1:0.01321)100.0:0.03115)26.0:0.01004,GB_GCA_900317875.1:0.045)100.0:0.04319,((GB_GCA_900315085.1:0.0231,GB_GCA_900318495.1:0.03029)100.0:0.01288,GB_GCA_003520555.1:0.03868)100.0:0.03609)70.0:0.01129,(((RS_GCF_900100595.1:0.03254,GB_GCA_900320415.1:0.04749)100.0:0.02208,GB_GCA_900316555.1:0.04989)100.0:0.03981,GB_GCA_900319655.1:0.10366)88.0:0.01387)100.0:0.02225,GB_GCA_900315605.1:0.07632)100.0:0.02364,RS_GCF_900101355.1:0.07185)86.0:0.01434,(((RS_GCF_002834235.1:0.00897,RS_GCF_002834225.1:0.00767)100.0:0.05389,GB_GCA_002493005.1:0.06092)100.0:0.02495,(GB_GCA_002491825.1:0.02107,GB_GCA_003521625.1:0.00495)100.0:0.03844)45.0:0.01157)46.0:0.01147,GB_GCA_002493635.1:0.0779)95.0:0.02318,GB_GCA_003526955.1:0.09126)100.0:0.0663,((GB_GCA_900315785.1:0.03418,GB_GCA_900316385.1:0.04382)100.0:0.05347,GB_GCA_002350765.1:0.07654)100.0:0.08554)100.0:0.03171,GB_GCA_900314705.1:0.18199)88.0:0.02358,(((((((GB_GCA_002394725.1:0.01259,GB_GCA_003499325.1:0.01449)45.0:0.00402,GB_GCA_900314795.1:0.01139)92.0:0.00728,GB_GCA_900320995.1:0.01735)100.0:0.02748,GB_GCA_900313865.1:0.06193)98.0:0.01767,GB_GCA_900319615.1:0.05467)100.0:0.0367,(GB_GCA_900313895.1:0.05183,GB_GCA_900315815.1:0.04148)100.0:0.0325)100.0:0.07701,GB_GCA_002353935.1:0.14242)100.0:0.08383)'100.0:g__Ruminococcus_E':0.05063,RS_GCF_002160515.1:0.16245)100.0:0.03238,(((GB_GCA_900313125.1:0.05466,GB_GCA_900317025.1:0.04564)95.0:0.01875,GB_GCA_900317815.1:0.07418)100.0:0.07807,((GB_GCA_900315255.1:0.0423,GB_GCA_900315715.1:0.04172)100.0:0.05538,GB_GCA_900320535.1:0.10753)100.0:0.03534)'100.0:g__RUG592':0.14947)94.0:0.02308,((((GB_GCA_900316615.1:0.02438,GB_GCA_900316025.1:0.01638)100.0:0.09448,GB_GCA_000435335.1:0.07944)'100.0:g__CAG-964':0.09347,GB_GCA_002391625.1:0.11943)88.0:0.04386,GB_GCA_002493755.1:0.19241)98.0:0.03042)99.0:0.03425,...
这棵树很大，我想要的是减少这棵树。我想在这棵树中维护我列表数据中的所有叶子并删除其余部分。
我不熟悉使用 ete3，任何人都可以让我朝着正确的方向前进吗？