def __init__(self,
fileName,
uniqKeyCols=None,
multiKeyCols=None,
rowClass=None,
typeMap=None,
defaultColType=None,
columns=None,
columnNameMapper=None,
ignoreExtraCols=False,
isRdb=False,
inFh=None,
allowEmpty=False,
dialect=csv.excel_tab):
"""Read TSV file into the object
fileName - name of file, opened unless inFh is specified
uniqKeyCols - name or names of columns to index with uniq keys,
can be string or sequence
multiKeyCols - name or names of columns to index, allowing multiple keys.
can be string or sequence
rowClass - class or class factory function to use for a row. Must take
TSVReader and list of string values of columns.
typeMap - if specified, it maps column names to the type objects to
use to convert the column. Unspecified columns will not be
converted. Key is the column name, value can be either a type
or a tuple of (parseFunc, formatFunc). If a type is use,
str() is used to convert to a printable value.
defaultColType - if specified, type of unspecified columns
columns - if specified, the column names to use. The header
should not be in the file.
ignoreExtraCols - should extra columns be ignored?
isRdb - file is an RDB file, ignore second row (type map still needed).
inFh - If not None, this is used as the open file, rather than
opening it. Closed when the end of file is reached.
allowEmpty - an empty input results in an EOF rather than an error.
Should specify this if reading from a database query.
"""
reader = TSVReader(fileName,
rowClass=rowClass,
typeMap=typeMap,
defaultColType=defaultColType,
isRdb=isRdb,
columns=columns,
columnNameMapper=columnNameMapper,
ignoreExtraCols=ignoreExtraCols,
inFh=inFh,
allowEmpty=allowEmpty,
dialect=dialect)
try:
self.columns = reader.columns
self.colTypes = reader.colTypes
self.colMap = reader.colMap
self.__buildIndices(uniqKeyCols, multiKeyCols)
self.__readBody(reader)
except Exception, e:
raise TSVError("load failed", reader=reader,
cause=e), None, sys.exc_info()[2]
def __init__(self, fileName):
TSVReader.__init__(self, fileName, typeMap=typeMap)
def __init__(self, fileName, isRdb=False):
TSVReader.__init__(self, fileName, typeMap=typeMap, isRdb=isRdb)
def __init__(self, fileName, isRdb=False):
TSVReader.__init__(self, fileName, typeMap=typeMap, isRdb=isRdb)
def __init__(self, fileName):
TSVReader.__init__(self, fileName, typeMap=typeMap)
