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Clustering package ( scipy.cluster )
K-means clustering and vector quantization ( scipy.cluster.vq )
Hierarchical clustering ( scipy.cluster.hierarchy )
Constants ( scipy.constants )
Discrete Fourier transforms ( scipy.fft )
Legacy discrete Fourier transforms ( scipy.fftpack )
Integration and ODEs ( scipy.integrate )
Interpolation ( scipy.interpolate )
Input and output ( scipy.io )
Linear algebra ( scipy.linalg )
Low-level BLAS functions ( scipy.linalg.blas )
Low-level LAPACK functions ( scipy.linalg.lapack )
BLAS Functions for Cython
LAPACK functions for Cython
Interpolative matrix decomposition ( scipy.linalg.interpolative )
Miscellaneous routines ( scipy.misc )
Multidimensional image processing ( scipy.ndimage )
Orthogonal distance regression ( scipy.odr )
Optimization and root finding ( scipy.optimize )
Cython optimize zeros API
Signal processing ( scipy.signal )
Sparse matrices ( scipy.sparse )
Sparse linear algebra ( scipy.sparse.linalg )
Compressed sparse graph routines ( scipy.sparse.csgraph )
Spatial algorithms and data structures ( scipy.spatial )
Distance computations ( scipy.spatial.distance )
Special functions ( scipy.special )
Statistical functions ( scipy.stats )
Result classes
Contingency table functions ( scipy.stats.contingency )
Statistical functions for masked arrays ( scipy.stats.mstats )
Quasi-Monte Carlo submodule ( scipy.stats.qmc )
Random Number Generators ( scipy.stats.sampling )
Low-level callback functions

scipy.sparse.spmatrix.len#

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