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.

See also

NumPy IO routines

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 an ARFF dataset.
ArffError	Base exception for errors when reading ARFF files.
ParseArffError	Exception for syntax and parsing errors in ARFF files.