plantri package not found and installing packages

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Please provide the exact code used and the exact error message you get.

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If we define `f` by

    def f(x, y):
        return (x, y)

then `f(2, 3)` returns `(2, 3)` but `f(2)` gives:

    TypeError: f() takes exactly 2 arguments (1 given)

produces:

If we define f by

def f(x, y):
    return (x, y)

then f(2, 3) returns (2, 3) but f(2) gives:

TypeError: f() takes exactly 2 arguments (1 given)

Please edit your question to do that.

What Sage version are you using? Under what operating system?

Using Sage 8.3.beta2, I was able to install plantri by running the following in a terminal:

sage -i plantri