Sharing package data across files

scottpakin1 at scottpakin1 at
Tue Jun 28 15:17:06 EDT 2016

I'm trying to create a package in which the constituent files share some state.  Apparently, I don't understand scopes, namespaces, and package semantics as well as I thought I did.  Here's the directory structure for a simplified example:

   example/ defines a single variable:

    foo = 123 defines a function that reads and writes that variable:

    def bar():
        global foo
        foo += 1
        return foo exposes both of those to the caller:

    from vars import foo
    from funcs import bar

Alas, it seems the bar function does not reside in the same global scope as the foo variable:

    >>> from example import foo, bar
    >>> foo
    >>> bar()
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "example/", line 3, in bar
        foo += 1
    NameError: global name 'foo' is not defined

How can I make the example package work like one integrated module even though in reality it's split across multiple files?

-- Scott

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