python-random模块

import random

#1.random()
a = random.random()
print(a)					        # Random float:  0.0 <= x < 1.0

#2.uniform()
print(random.uniform(2.5,10.0))				# Random float:  2.5 <= x < 10.0

#3.expovariate()
print(random.expovariate(1 / 5))			# Interval between arrivals averaging 5 seconds

#4.randrange()
print(random.randrange(10))				# Integer from 0 to 9 inclusive
print(random.randrange(0,101,2))			# Even integer from 0 to 100 inclusive

#5.choice()
print(random.choice(['win','lose','draw']))     	# Single random element from a sequence
	
#6.choices()
#random.choices(population, weights=None, *, cum_weights=None, k=1)
a = [5,9,20,10,2,8]
print(random.choices(a,weights=[1,1,1,3,1,1],k=3)) 

#7.randint()
print(random.randint(12,20))				# Returns a random integer N such that a <= N <= b. 

#8.sample()
print(random.sample([10, 20, 30, 40, 50, 50], k=4))	# For random sampling without repetition

#9.shuffle()					        # Randomly rearrange the list
a = [5,9,20,10,2,8]
random.shuffle(a) 				        # Return None
print(a) 											

#10.seed()
random.seed(1)
print(random.random())
print(random.getrandbits(4))