Python 检查是否存在非数字值，但类型错误：'<'；在'；浮动'；和'；str'；？

我正在构建一个应用程序，我需要在后台将数据提供给

DecisionTreeGressor

。我之前已经更正了数据中的所有非数值，但是我仍然得到了这个错误，我不确定是什么导致了它

X\u列

是一个

np.数组

---

TypeError:“我在一个输入参数中出错：

max\u features=None，min\u samples\u leaf=1，max\u depth=None

因此，在将它们输入方法之前，我确保将它们转换为
int
s

def build_tree(X_train, y_train, max_features=None, min_samples_leaf=1, max_depth=None):
    """
    Build a DecisionTreeRegressor and return the tree plus its score on the training set.
    """
    if X_train.dtype not in [np.float64, np.int32]:
        raise Exception('Input array X_train is not all numerical')

    m = DecisionTreeRegressor(max_features=max_features, min_samples_leaf=min_samples_leaf, max_depth=max_depth)
    print(X_train)
    print(y_train)
    m.fit(X_train, y_train)
    score = m.score(X_train, y_train)

    return m, score

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 2328, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 2314, in wsgi_app
    response = self.handle_exception(e)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 1760, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 2311, in wsgi_app
    response = self.full_dispatch_request()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 1834, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 1737, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/philippwulff/PycharmProjects/ki-demonstrator_wba_ima/app.py", line 83, in training
    utils.training(max_features, min_samples_leaf, max_depth)
  File "/Users/philippwulff/PycharmProjects/ki-demonstrator_wba_ima/utils.py", line 207, in training
    m, train_score = build_tree(X_train, y_train, max_features=max_features, min_samples_leaf=min_samples_leaf, max_depth=max_depth)
  File "/Users/philippwulff/PycharmProjects/ki-demonstrator_wba_ima/utils.py", line 173, in build_tree
    m.fit(X_train, y_train)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sklearn/tree/tree.py", line 1142, in fit
    X_idx_sorted=X_idx_sorted)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sklearn/tree/tree.py", line 183, in fit
    if not 0. < self.min_samples_leaf <= 0.5:
TypeError: '<' not supported between instances of 'float' and 'str'

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 [-0.06487138 -0.10560042  0.12329933 -0.01138854]
 [ 0.02986417  0.00504991 -0.02709303 -0.01711724]
 [ 0.07041037  0.10002938  0.0148242   0.05580038]
 [ 0.11275735  0.05862036  0.13604627  0.02802539]
 [-0.07503533 -0.09884016  0.02477056  0.04107268]
 [-0.07444093 -0.04283106 -0.00823001 -0.08058039]
 [ 0.06461195  0.00344482 -0.09921795  0.02464004]
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 [ 0.01257215  0.00143332 -0.12088713 -0.05700201]
 [-0.01474469  0.03290755  0.14115483 -0.07005832]
 [ 0.04500621 -0.02532974 -0.06386085 -0.02733249]
 [ 0.01667035  0.06482712  0.00047768 -0.04107894]
 [-0.11497694 -0.02762786 -0.00691482  0.0066152 ]
 [-0.0100544   0.08682421 -0.02454839  0.04351417]
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 [ 0.10029473  0.07845812  0.02481654  0.10874874]
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 [-0.08247856 -0.01475688  0.01824094 -0.04868899]
 [ 0.07914827  0.02489667  0.11064371  0.01846905]
 [ 0.0647873  -0.07365439 -0.07410381  0.03684509]
 [-0.10980192  0.01625051  0.08960802 -0.09414693]
 [-0.03833209  0.13277199 -0.03721675 -0.00210564]
 [ 0.06921233  0.09863564  0.04489918  0.00497802]
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 [-0.01355843 -0.04164554  0.09628467  0.11204992]
 [-0.03745581  0.14167463 -0.06471836  0.10101439]
 [ 0.0017556  -0.04770705  0.02093827 -0.13616193]
 [-0.01017835  0.12304962  0.07454541 -0.09885254]
 [-0.10591682 -0.103596    0.12765413 -0.11030284]
 [ 0.07009058 -0.04282568  0.1645003  -0.02907495]
 [-0.01474315 -0.02357882  0.00633438 -0.05740012]
 [ 0.06521788 -0.0519743  -0.10263768  0.0145396 ]
 [ 0.00410095  0.00921156 -0.03469556 -0.03261246]
 [-0.05910988 -0.03934184  0.07996592  0.00225417]
 [ 0.05366245 -0.02431227  0.06051538  0.02247703]
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 [-0.0682202   0.04195905  0.05548192  0.10890684]
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 [-0.02614285 -0.05474784  0.10221407  0.09245584]
 [ 0.02258086  0.04768348 -0.02738017  0.02783346]
 [-0.12426329  0.06404002  0.00757445  0.10388729]
 [ 0.09550579  0.04564766  0.06982732  0.03615207]
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 [ 0.10049899 -0.0006554  -0.04297727  0.11500702]
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 [-0.02817095 -0.01200159  0.01850316 -0.13757669]
 [ 0.00174165  0.00731388  0.06448703 -0.11180064]]
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