Theĭefault keyword-only argument specifies an object to return if With a single iterable argument, return its biggest item. Basically, there are two different ways of implementing the max () function in python. More complete version: This includes some of aforementioned nuances like the key and default keyword arguments and the use of iterators instead of slices: sentinel = object()ĭef mymax(*args, default=sentinel, key=None): If two or more positionalĪrguments are provided, the largest of the positional arguments is Largest item in the iterable is returned. If one positional argument is provided, it should be an iterable. Return the largest item in an iterable or the largest of two or more There are other nuances, but this should get you started.ĭocumentation: The special handling for the length one case versus other cases is documented here: Raise TypeError('max expected at least 1 argument, got 0') python max function using key and lambda expression How does the max function work What are the arguments it is taking What is use of the keyword key in. Or, say, the max function returns the highest, largest, or biggest items in a.
Simplified pure python code: If you ignore the default and key keyword arguments, what's left simplifies to: def mymax(*args): The Python max function is used to find the maximum item of a given object.
#Python max function code
Source material: The C code that handles the logic can be found at: The function deletes the named attribute, provided the object allows it. The string must be the name of one of the object’s attributes. The syntax for many items is max (n1, n2, n3, ) or max (iterable) in the case of an iterable. This is a relative of setattr().The arguments are an object and a string.
If the values are strings, an alphabetical comparison is made. Short answer: Use a star to collect the arguments in a tuple and then add a special case for a tuple of length one to handle a single iterable argument. The Python max () method returns the item with the highest value or the item with the greatest value in an iterable.
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