Python 3.3+inspectfunction

inspect.getclosurevars()

classes and functions

Shows which outside names a function refers to: closure, global, built-in and unresolved ones, as a ClosureVars named tuple.

Syntax

inspect.getclosurevars(func)

Values are read when getclosurevars runs, not when the function was defined. unbound is not just typos: the function looks at every name in the code, so an attribute name (x.real) ends up there too although nothing is wrong. unbound is a set, so sort it before printing. Built-in functions raise TypeError.

Examples

import inspect
rate = 2
def make(k):
    def f(x):
        return x.real * k * rate + len([]) + undefined_name
    return f
cv = inspect.getclosurevars(make(3))
print(cv.nonlocals, cv.globals)  # → {'k': 3} {'rate': 2}
print(list(cv.builtins), sorted(cv.unbound))  # → ['len'] ['real', 'undefined_name']

See also

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