Question about split method

[Robert]

Hi,

I learn split method online. When I try to run the line with ss1 beginning,
I don't understand why its output of ss1 and ss2. I have check the help
about split. It looks like that it is a numpy method.
What is the split method parameter (within "  ") for?


Thanks,



...............
ss0="1, 2, 4, 8, 16".split(", ")

ss0
Out[2]: ['1', '2', '4', '8', '16']

ss1="1, 2, 4, 8, 16".split("    , ")

ss1
Out[4]: ['1, 2, 4, 8, 16']

ss2="1, 2, 4, 8, 16".split(",   ")

ss2
Out[9]: ['1, 2, 4, 8, 16']

help(split)
Help on function split in module numpy.lib.shape_base: