"""docstring"""

__revision__ = ''

HEHE = {}

def function1(value = []):
    """docstring"""
    print value

def function2(value = HEHE):
    """docstring"""
    print value

def function3(value):
    """docstring"""
    print value

def function4(value = set()):
    """set is mutable and dangerous."""
    print value

def function5(value = frozenset()):
    """frozenset is immutable and safe."""
    print value

GLOBAL_SET = set()

def function6(value = GLOBAL_SET):
    """set is mutable and dangerous."""
    print value

