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我正在尝试获取单个岩石类型上每个特征的相对重要性以及它的特征名称。我做了以下事情：

for y_train_all, y_strings_all in zip(y_trains_classes, 
                                      y_classes_names):
    grid_for.fit(X_train, y_train_all)
    feature_importances = grid_for.best_estimator_.feature_importances_
    attributes_all = ["Depth" ,"Neutron Porosity","Caliper ", "Density Porosity","Gamma Ray",
                      "Photoelectric", "Bulk Density", "Density Correction", "Resistivity (Deep)", 
                       "Resistivity (Medium)", "Resistivity (Shallow)","Ratio(Shallow/Deep resistivity)",
                      "SP",  "Micro-inverse (resistivity) micro-log", "Micro-normal (resistivity) micro-log", 
                    "Delta-t (transit time)", "Sonic Porosity"]
    print("\n", "Features importance of", y_strings_all, "= \n", sorted(zip(feature_importances*100, attributes_all), 
                                                                  reverse=True))

我为其中一种岩石类型得到了这个：

Features importance of shaly limestone = 
 [(32.698676805752939, 'Depth'), (11.437112671467331, 'Gamma Ray'), (7.0256677233376346, 'SP'), (5.2919610063076963, 'Density Correction'), (4.69972333501756, 'Resistivity (Deep)'), (4.3250282898616081, 'Caliper '), (3.876972448849632, 'Micro-normal (resistivity) micro-log'), (3.8373287915693957, 'Resistivity (Medium)'), (3.6854852718774076, 'Photoelectric'), (3.6552972972995796, 'Sonic Porosity'), (3.5872666770164936, 'Micro-inverse (resistivity) micro-log'), (3.5667515140079744, 'Delta-t (transit time)'), (2.7913023534006003, 'Resistivity (Shallow)'), (2.714697087901786, 'Neutron Porosity'), (2.4667204236786993, 'Ratio(Shallow/Deep resistivity)'), (2.1928475922610642, 'Density Porosity'), (2.1471607103925967, 'Bulk Density')]

当我只为一种类型的岩石做这件事时，我得到了如此平滑的打印结果：

[(32.698676805752939, 'Depth'),
 (11.437112671467331, 'Gamma Ray'),
 (7.0256677233376346, 'SP'),
 (5.2919610063076963, 'Density Correction'),
 (4.69972333501756, 'Resistivity (Deep)'),
 (4.3250282898616081, 'Caliper'),
 (3.876972448849632, 'Micro-normal (resistivity) micro-log'),
 (3.8373287915693957, 'Resistivity (Medium)'),
 (3.6854852718774076, 'Photoelctric'),
 (3.6552972972995796, 'Sonic Porosity'),
 (3.5872666770164936, 'Micro-inverse (resistivity) micro-log'),
 (3.5667515140079744, 'Delta-t (transit time)'),
 (2.7913023534006003, 'Resistivity (Shallow)'),
 (2.714697087901786, 'Neutron Porosity'),
 (2.4667204236786993, 'Ratio(Shallow/Deep resistivity)'),
 (2.1928475922610642, 'Density Porosity'),
 (2.1471607103925967, 'Bulk Density')]

我怎样才能使打印的解决方案看起来像feature_importance我只得到一种岩石类型的答案时一样平滑（一条线）？

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