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import itertools
from future import utils
if utils.PY2:
from __builtin__ import max as _builtin_max, min as _builtin_min
else:
from builtins import max as _builtin_max, min as _builtin_min
_SENTINEL = object()
def newmin(*args, **kwargs):
return new_min_max(_builtin_min, *args, **kwargs)
def newmax(*args, **kwargs):
return new_min_max(_builtin_max, *args, **kwargs)
def new_min_max(_builtin_func, *args, **kwargs):
"""
To support the argument "default" introduced in python 3.4 for min and max
:param _builtin_func: builtin min or builtin max
:param args:
:param kwargs:
:return: returns the min or max based on the arguments passed
"""
for key, _ in kwargs.items():
if key not in set(['key', 'default']):
raise TypeError('Illegal argument %s', key)
if len(args) == 0:
raise TypeError
if len(args) != 1 and kwargs.get('default', _SENTINEL) is not _SENTINEL:
raise TypeError
if len(args) == 1:
iterator = iter(args[0])
try:
first = next(iterator)
except StopIteration:
if kwargs.get('default', _SENTINEL) is not _SENTINEL:
return kwargs.get('default')
else:
raise ValueError('{}() arg is an empty sequence'.format(_builtin_func.__name__))
else:
iterator = itertools.chain([first], iterator)
if kwargs.get('key') is not None:
return _builtin_func(iterator, key=kwargs.get('key'))
else:
return _builtin_func(iterator)
if len(args) > 1:
if kwargs.get('key') is not None:
return _builtin_func(args, key=kwargs.get('key'))
else:
return _builtin_func(args)
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