Re: [Python-ideas] PEP 505 (None coalescing operators) thoughts

On 9/29/2015 9:20 AM, Rob Cliffe wrote:

Why not

def __init__(self, vertices=None, edges=None, weights=None, source_nodes=None): self.vertices = vertices if vertices is not None else [] self.edges = edges if edges is not None else [] self.weights = weights if weights is not None else {} self.source_nodes = source_nodes if source_nodes is not None else []

I don't understand why not: self.vertices = vertices or [] self.edges = edges or [] self.weights = weights or {} self.source_nodes = source_nodes or [] Emile