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I have updated my python from 3.3.2 to 3.5.1 a few days ago, and the other day by doing help in some function I found something strange, a / in the firm of some of the functions, for example:

in 3.3.2

>>> help(len)
Help on built-in function len in module builtins:

len(...)
    len(object) -> integer

    Return the number of items of a sequence or mapping.

>>>

now in 3.5.1

>>> help(len)
Help on built-in function len in module builtins:

len(obj, /)
    Return the number of items in a container.

>>>

what is the meaning of this /??

Mogsdad
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Copperfield
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1 Answers1

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The slash means the end of the "positional only parameters", as better explained in this previous answer.

Community
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alfredoc
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