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ast.For

control flow

The node of a for loop: the target, the iterable iter, the body, the else branch in orelse and type_comment.

Syntax

ast.For(target, iter, body, orelse, type_comment=None)

The loop's else branch lives in orelse and runs when the loop was not stopped by break — an empty list means there is no else. An unpacking target for i, x in … is a Tuple with the Store context. A loop written with async for is a different class, AsyncFor, which visit_For never sees; list comprehensions are not For either but comprehension nodes inside ListComp.

Examples

import ast
src = 'for i, x in enumerate(s):\n    pass\nelse:\n    done()'
node = ast.parse(src).body[0]
print(type(node.target).__name__, type(node.target.ctx).__name__)  # → Tuple Store
print(node.iter.func.id, len(node.orelse))  # → enumerate 1

See also

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