def __init__(self, name, column_type, primary_key, default):
    self.name = name
    self.column_type = column_type
    self.primary_key = primary_key
    self.default = default
def __init__(self, name, column_type, primary_key, default):
    self.name = name
    self.column_type = column_type
    self.primary_key = primary_key
    self.default = default