def __init__(self, *args, **kwargs):
Process.__init__(self)
if (len(args) > 1 and
not any(isinstance(arg, (TableExpression, list, tuple))
for arg in args)):
args = (args,)
self.args = args
suffix = kwargs.pop('suffix', '')
fname = kwargs.pop('fname', None)
mode = kwargs.pop('mode', 'w')
if kwargs:
kwarg, _ = kwargs.popitem()
raise TypeError("'%s' is an invalid keyword argument for csv()"
% kwarg)
if fname is not None and suffix:
raise ValueError("csv() can't have both 'suffix' and 'fname' "
"arguments")
if fname is None:
suffix = "_" + suffix if suffix else ""
fname = "{entity}_{period}" + suffix + ".csv"
self.fname = fname
if mode not in ('w', 'a'):
raise ValueError("csv() mode argument must be either "
"'w' (overwrite) or 'a' (append)")
self.mode = mode
def __init__(self, filter):
Process.__init__(self)
self.filter = filter
def __init__(self, expr1, expr2):
Process.__init__(self)
self.expr1 = expr1
self.expr2 = expr2
def __init__(self, expr):
Process.__init__(self)
self.expr = expr
def __init__(self, period=None):
Process.__init__(self)
self.period = period
def __init__(self, *args):
Process.__init__(self)
self.args = args