class documentation

class ColumnSet(util.ordered_column_set):

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Undocumented

Method __add__ Undocumented
Method __eq__ Undocumented
Method __hash__ Undocumented
Method contains​_column Undocumented
Method extend Undocumented
def __add__(self, other):

Undocumented

def __eq__(self, other):

Undocumented

def __hash__(self):

Undocumented

def contains_column(self, col):

Undocumented

def extend(self, cols):

Undocumented