minmax.py

def min(*args, **kwargs):
    key = kwargs.get("key", None)

    iterable = args if len(args) > 1 else list(args[0])
    
    minValue = iterable[0]
    for e in iterable:
        if (e if not key else key(e)) < (minValue if not key else key(minValue)):
            minValue = e
            
    return minValue


def max(*args, **kwargs):
    key = kwargs.get("key", None)
    
    iterable = args if len(args) > 1 else list(args[0])
    
    maxValue = iterable[0]
    for e in iterable:
        if (e if not key else key(e)) > (maxValue if not key else key(maxValue)):
            maxValue = e
            
    return maxValue