An environment in which an expression is evaluated consists of a sequence of
frames, depicted as boxes. Each frame contains bindings, each of which
associates a name with its corresponding value. There is a single global
frame. Assignment and import statements add entries to the first frame of the
current environment.
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1.3 Defining New Functionsgh that the meaning of programs is
non-obvious. What if a formal parameter has the same name as a built-in
function? Can two functions share names without confusion? To resolve such
questions, we must describe environments in more detail.
<span>An environment in which an expression is evaluated consists of a sequence of
frames, depicted as boxes. Each frame contains bindings, each of which
associates a name with its corresponding value. There is a single global
frame. Assignment and import statements add entries to the first frame of the
current environment. So far, our environment consists only of the global frame.
1 from math import pi 2 tau = 2 * pi Edit code in Online Python Tutor Summary
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