Re: [Python-ideas] `if-unless` expressions in Python

On 6/3/2019 8:57 PM, James Lu wrote:

`if-unless` expressions in Python

    if condition1 expr unless condition2

is an expression that roughly reduces to

    expr if condition1 and not condition2 else EMPTY

An expression MUST evaluate to a value. EMPTY is spelled None in Python. No need for an alternate spelling. The only place that None is implicit rather than explicit is the implicit 'return None' *statement* at the end of functions. That is enough. -- Terry Jan Reedy