base = 1024 if (gnu or binary) else 1000

[MRAB]

On 2019-08-05 16:01, Hongyi Zhao wrote:
> Hi,
> 
> I read the source code of of `humanize/filesize.py' and find the 24 line
> writing as follows:
> 
> base = 1024 if (gnu or binary) else 1000
> 
> It seems this is not the standard usage of if ... else ....
> 
> Is this a variant of lambda or some others?  Could you please give me
> some more hints?
> 
It's a "conditional expression" (also called a "ternary if") and it's 
mentioned in Python's documentation.

In this case it does the same as:

if gnu or binary:
     base = 1024
else:
     base = 1000