all Python 3Built-in functionsterm

delattr

OOP

Deletes the named attribute of an object. Equivalent to del obj.attr, but lets you pass the attribute name dynamically as a string.

Syntax

delattr(object, name)

delattr earns its keep only when the attribute name is computed at run time; if you know the name in advance, write del obj.attr. It removes an instance attribute: if x lives in the class body rather than being assigned through self, delattr(instance, 'x') raises AttributeError even though reading obj.x worked fine. A missing attribute raises AttributeError too, so guard the call with hasattr or try/except.

Examples

class A:
    x = 1
    def __init__(self): self.y = 2
a = A()
delattr(a,'y')
print(hasattr(a,'y'))  # → False
delattr(A,'x')
print(hasattr(A,'x'))  # → False
try:
    delattr(a,'z')
except AttributeError as e: print(e)

See also

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