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安装Numpy出现的问题
１、报错如下
checking for nltk
/usr/local/lib/python2.7/dist-packages/scipy/special/__init__.py:640: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._ufuncs import *
/usr/local/lib/python2.7/dist-packages/scipy/linalg/basic.py:17: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._solve_toeplitz import levinson
/usr/local/lib/python2.7/dist-packages/scipy/linalg/__init__.py:207: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._decomp_update import *
/usr/local/lib/python2.7/dist-packages/scipy/special/_ellip_harm.py:7: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._ellip_harm_2 import _ellipsoid, _ellipsoid_norm
/usr/local/lib/python2.7/dist-packages/scipy/interpolate/_bsplines.py:10: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _bspl
/usr/local/lib/python2.7/dist-packages/scipy/sparse/lil.py:19: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _csparsetools
/usr/local/lib/python2.7/dist-packages/scipy/sparse/csgraph/__init__.py:165: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._shortest_path import shortest_path, floyd_warshall, dijkstra,\
/usr/local/lib/python2.7/dist-packages/scipy/sparse/csgraph/_validation.py:5: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._tools import csgraph_to_dense, csgraph_from_dense,\
/usr/local/lib/python2.7/dist-packages/scipy/sparse/csgraph/__init__.py:167: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._traversal import breadth_first_order, depth_first_order, \
/usr/local/lib/python2.7/dist-packages/scipy/sparse/csgraph/__init__.py:169: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._min_spanning_tree import minimum_spanning_tree
/usr/local/lib/python2.7/dist-packages/scipy/sparse/csgraph/__init__.py:170: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._reordering import reverse_cuthill_mckee, maximum_bipartite_matching, \
/usr/local/lib/python2.7/dist-packages/scipy/spatial/__init__.py:95: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .ckdtree import *
/usr/local/lib/python2.7/dist-packages/scipy/spatial/__init__.py:96: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .qhull import *
/usr/local/lib/python2.7/dist-packages/scipy/spatial/_spherical_voronoi.py:18: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _voronoi
/usr/local/lib/python2.7/dist-packages/scipy/spatial/distance.py:122: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _hausdorff
/usr/local/lib/python2.7/dist-packages/scipy/optimize/_trlib/__init__.py:1: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._trlib import TRLIBQuadraticSubproblem
/usr/local/lib/python2.7/dist-packages/scipy/optimize/_numdiff.py:10: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._group_columns import group_dense, group_sparse
/usr/local/lib/python2.7/dist-packages/scipy/stats/_continuous_distns.py:18: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _stats
/usr/local/lib/python2.7/dist-packages/sklearn/utils/__init__.py:9: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .murmurhash import murmurhash3_32
/usr/local/lib/python2.7/dist-packages/sklearn/feature_extraction/hashing.py:10: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import _hashing
/usr/local/lib/python2.7/dist-packages/sklearn/utils/extmath.py:24: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._logistic_sigmoid import _log_logistic_sigmoid
/usr/local/lib/python2.7/dist-packages/sklearn/utils/extmath.py:26: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .sparsefuncs_fast import csr_row_norms
/usr/local/lib/python2.7/dist-packages/scipy/io/matlab/mio4.py:18: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .mio_utils import squeeze_element, chars_to_strings
/usr/local/lib/python2.7/dist-packages/scipy/io/matlab/mio5.py:98: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .mio5_utils import VarReader5
/usr/local/lib/python2.7/dist-packages/sklearn/utils/random.py:10: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._random import sample_without_replacement
/usr/local/lib/python2.7/dist-packages/sklearn/datasets/svmlight_format.py:25: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ._svmlight_format import _load_svmlight_file
/usr/local/lib/python2.7/dist-packages/sklearn/svm/base.py:8: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import libsvm, liblinear
/usr/local/lib/python2.7/dist-packages/sklearn/svm/base.py:9: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import libsvm_sparse
/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/base.py:35: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ..utils.seq_dataset import ArrayDataset, CSRDataset
/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/least_angle.py:23: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from ..utils import arrayfuncs, as_float_array, check_X_y, deprecated
/usr/local/lib/python2.7/dist-packages/sklearn/metrics/cluster/supervised.py:23: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .expected_mutual_info_fast import expected_mutual_information
/usr/local/lib/python2.7/dist-packages/sklearn/metrics/pairwise.py:30: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .pairwise_fast import _chi2_kernel_fast, _sparse_manhattan
/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/coordinate_descent.py:29: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from . import cd_fast
/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/__init__.py:22: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .sgd_fast import Hinge, Log, ModifiedHuber, SquaredLoss, Huber
/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/sag.py:12: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .sag_fast import sag
/usr/local/lib/python2.7/dist-packages/sklearn/neighbors/__init__.py:6: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .ball_tree import BallTree
/usr/local/lib/python2.7/dist-packages/sklearn/neighbors/__init__.py:7: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
from .kd_tree import KDTree２、分析
从以上报错文件可以看出numpy出现问题，然后在网上搜索发现可能是numpy版本的问题，然后查看PyPi的numpy历史版本:
再查看当前版本
>>> import numpy
>>> numpy.__version__
'1.15.0'
官网的numpy已经更新了，基本可以知道是numpy版本出现了问题。
３、解决问题
将numpy版本升级到当前最新版本1.15.1
sudo pip uninstall numpy
sudo pip install numpy==1.15.1到此，不再出现报错，问题解决！
同类问题参考：
RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility