any vs. all vs. iteration with break

isAny.py

from datetime import datetime
from random import randint


data = list()
for i in range(100000):
	j = randint(1,20)
	if j == 20:
		data.append(j)
	else:
		data.append(datetime(2016, 6, j, 12, j+1, j*2))



s = datetime.utcnow()
print all(isinstance(item, datetime) for item in data)
e = datetime.utcnow()
print (e-s).total_seconds()*1000


s = datetime.utcnow()
print any(not isinstance(item, datetime) for item in data)
e = datetime.utcnow()
print (e-s).total_seconds()*1000

s = datetime.utcnow()
for item in data:
	if not isinstance(item, datetime):
		print False
		break
e = datetime.utcnow()
print (e-s).total_seconds()*1000

"""
python isAll.py 
False
0.876
True
0.018
False
0.036
"""