The * syntax is for passing a variable number of arguments. Since the function is called with a single argument, a is a list containing a single item: [[1,3,3]] so len(a) is 1.
*
a
[[1,3,3]]
len(a)
Whereas in the second version a is [1,3,3] and len(a) is 3.
[1,3,3]
There's a good explanation of *args and **kwargs on saltycrane.com/blog/2008/01/how-to....
Thanks a lot
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The
*syntax is for passing a variable number of arguments. Since the function is called with a single argument,ais a list containing a single item:[[1,3,3]]solen(a)is 1.Whereas in the second version
ais[1,3,3]andlen(a)is 3.There's a good explanation of *args and **kwargs on saltycrane.com/blog/2008/01/how-to....
Thanks a lot