IOHandlers.csvWrapper — CSV Plugin for PySAL’s FileIO System

New in version 1.0.

class pysal.core.IOHandlers.csvWrapper.csvWrapper(*args, **kwargs)

DataTable provides additional functionality to FileIO for data table file tables FileIO Handlers the provide data tables should subclass this instead of FileIO

Methods

by_col
by_row
cast
check
close
flush
get
getType
next
open
read
seek
tell
truncate
write

class by_col(parent)

class csvWrapper.by_row(parent)

csvWrapper.cast(key, typ)

cast key as typ

classmethod csvWrapper.check()

Prints the contents of the registry

csvWrapper.close()

subclasses should clean themselves up and then call this method

csvWrapper.flush()

csvWrapper.get(n)

Seeks the file to n and returns n If .ids is set n should be an id, else, n should be an offset

static csvWrapper.getType(dataPath)

Parse the dataPath and return the data type

csvWrapper.ids

csvWrapper.next()

A FileIO object is its own iterator, see StringIO

classmethod csvWrapper.open(*args, **kwargs)

Alias for FileIO()

csvWrapper.rIds

csvWrapper.read(n=-1)

Read at most n objects, less if read hits EOF if size is negative or omitted read all objects until EOF returns None if EOF is reached before any objects.

csvWrapper.seek(n)

Seek the FileObj to the beginning of the n’th record, if ids are set, seeks to the beginning of the record at id, n

csvWrapper.tell()

Return id (or offset) of next object

csvWrapper.truncate(size=None)

Should be implemented by subclasses and redefine this doc string

csvWrapper.write(obj)

Must be implemented by subclasses that support ‘w’ subclasses should increment .pos subclasses should also check if obj is an instance of type(list) and redefine this doc string