def getFirstRow(filename):
""" Create a MetaData but only read the first row.
This method should be used for validations of labels
or metadata size, but the full metadata is not needed.
"""
md = MetaData()
md.read(filename, 1)
if md.getParsedLines():
row = Row()
row.readFromMd(md, md.firstObject())
else:
row = None
return row
def getFirstRow(mdOrFn):
""" Return the first object of a metadata.
Params:
mdOrFn: you can pass a metadata or a filename as argument.
"""
if isinstance(mdOrFn, basestring):
md = MetaData()
md.read(mdOrFn, 1)
else: # mdOrFn is MetaData
md = mdOrFn
if md.getParsedLines():
row = Row()
row.readFromMd(md, md.firstObject())
else:
row = None
return row
def getFirstRow(mdOrFn):
""" Return the first object of a metadata.
Params:
mdOrFn: you can pass a metadata or a filename as argument.
"""
if isinstance(mdOrFn, basestring):
md = MetaData()
md.read(mdOrFn, 1)
else: # mdOrFn is MetaData
md = mdOrFn
if md.getParsedLines():
row = Row()
row.readFromMd(md, md.firstObject())
else:
row = None
return row
def getSize(filename):
""" Return the metadata size without parsing entirely. """
md = MetaData()
md.read(filename, 1)
return md.getParsedLines()
def getSize(filename):
""" Return the metadata size without parsing entirely. """
md = MetaData()
md.read(filename, 1)
return md.getParsedLines()
