CSV#

Interface to read and write csv files.

Note

The module utilizes the csv file writer/reader from numpy.

class Source(location)[source]#

Bases: Source

CSV array source.

as_buffer()[source]#

as_memmap()[source]#

as_real()[source]#

as_virtual()[source]#

Return virtual source without array data to pass in parallel processing.

Returns

sourceSource class: The source class without array data.

property array#

The underlying data array.

Returns

arrayarray: The underlying data array of this source.

property dtype#

The data type of the source.

Returns

dtypedtype: The data type of the source.

property element_strides#

The strides of the array elements.

Returns

stridestuple: Strides of the array elements.

Note

The strides of the elements module itemsize instead of bytes.

property location#

The location where the data of the source is stored.

Returns

locationstr or None: Returns the location of the data source or None if this source lives in memory only.

property name#

The name of this source.

Returns

namestr: Name of this source.

property offset#

The offset of the memory map in the file.

Returns

offsetint: Offset of the memeory map in the file.

property order#

The order of how the data is stored in the source.

Returns

orderstr: Returns ‘C’ for C contigous and ‘F’ for fortran contigous, None otherwise.

property shape#

The shape of the source.

Returns

shapetuple: The shape of the source.

class VirtualSource(source=None, shape=None, dtype=None, order=None, location=None, name=None)[source]#

Bases: VirtualSource

as_buffer()[source]#

as_real()[source]#

as_virtual()[source]#

Return virtual source without array data to pass in parallel processing.

Returns

sourceSource class: The source class without array data.

property name#

The name of this source.

Returns

namestr: Name of this source.

create(location=None, shape=None, dtype=None, order=None, mode=None, array=None, as_source=True, **kwargs)[source]#

is_csv(source)[source]#: Checks if this source is a CSV source

read(source, slicing=None, as_source=None, **kwargs)[source]#

Read data from a csv file.

Arguments

sourcestr: The name of the CSV file.
slicingslice, Slice or None: An optional sub-slice to consider.
as_sourcebool: If True, return results as a source.

Returns

arrayarray: The data in the csv file as a buffer or source.

test()[source]#: Test CSV module

write(sink, data, slicing=None, **kwargs)[source]#

Write data to a csv file.

Arguments

sinkstr: The name of the CSV file.
dataarray: The data to write into the CSV file.
slicingslice, Slice or None: An optional sub-slice to consider.

Returns

sinkarray or source: The sink csv file.