I have downloaded Python 3.8 and start to play around with those latest python functions. In this article, we will look at the Positional-only parameter syntax which is a function parameter syntax / to indicate that some function parameters must be specified positionally and cannot be used as keyword arguments which means after the / syntax we may specify a value for each parameter within that function. For example,

def f(a, b, /, c, d):
    print(a, b, c, d)
f(10, 20, 30, d=40)

The below example will print out the sum of all the parameters within that function.

import math  

def e(a):
    return a * a

def f(a, b, /, **kwargs):
    sum = a + b 
    for num in kwargs:
        sum += kwargs[num]

f(2, 3, c=40, d=e(10), e=math .sin(60)) # output 144.695

The above syntax has been contributed by Pablo Galindo. Do you think the syntax is useful? Leave your comment below this post.

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