Input and output (scipy.io)#

SciPy has many modules, classes, and functions available to read data from and write data to a variety of file formats.

MATLAB® files#

loadmat(file_name[, mdict, appendmat, spmatrix])

Load MATLAB file.

savemat(file_name, mdict[, appendmat, ...])

Save a dictionary of names and arrays into a MATLAB-style .mat file.

whosmat(file_name[, appendmat])

List variables inside a MATLAB file.

For low-level MATLAB reading and writing utilities, see scipy.io.matlab.

IDL® files#

readsav(file_name[, idict, python_dict, ...])

Read an IDL .sav file.

Matrix Market files#

mminfo(source)

Return size and storage parameters from Matrix Market file-like 'source'.

mmread(source, *[, spmatrix])

Reads the contents of a Matrix Market file-like 'source' into a matrix.

mmwrite(target, a[, comment, field, ...])

Writes the sparse or dense array a to Matrix Market file-like target.

Unformatted Fortran files#

FortranFile(filename[, mode, header_dtype])

A file object for unformatted sequential files from Fortran code.

FortranEOFError

Indicates that the file ended properly.

FortranFormattingError

Indicates that the file ended mid-record.

Netcdf#

netcdf_file(filename[, mode, mmap, version, ...])

A file object for NetCDF data.

netcdf_variable(data, typecode, size, shape, ...)

A data object for netcdf files.

Harwell-Boeing files#

hb_read(path_or_open_file, *[, spmatrix])

Read HB-format file.

hb_write(path_or_open_file, m[, hb_info])

Write HB-format file.

Wav sound files (scipy.io.wavfile)#

read(filename[, mmap])

Open a WAV file.

write(filename, rate, data)

Write a NumPy array as a WAV file.

WavFileWarning

Warning for WAV files with format issues that can still be read.

Arff files (scipy.io.arff)#

loadarff(f)

Read an arff file.

MetaData(rel, attr)

Small container to keep useful information on a ARFF dataset.

ArffError

Base exception for errors when reading ARFF files.

ParseArffError

Exception for syntax and parsing errors in ARFF files.