Python3 decorating conditionally?

Question

Is it possible to decorate a function based on a condition?

a\'la:

if she.weight() == duck.weight(): 
    @burn
def witch():
    pass

Answer 1

It is possible to enable/disable decorators by reassignment.

def unchanged(func):
    "This decorator doesn't add any behavior"
    return func

def disabled(func):
    "This decorator disables the provided function, and does nothing"
    def empty_func(*args,**kargs):
        pass
    return empty_func

# define this as equivalent to unchanged, for nice symmetry with disabled
enabled = unchanged

#
# Sample use
#

GLOBAL_ENABLE_FLAG = True

state = enabled if GLOBAL_ENABLE_FLAG else disabled
@state
def special_function_foo():
    print "function was enabled"