Python------module definition, import, optimization------->random module

2.random Module

#随机浮点数

Random.random () #生成0到1之间的随机浮点数, cannot be specified by itself

Random.uniform (1,10) # can specify

#随机整数

Random.randint (1,7) #生成1到7之间的随机整数1 <=n<=7

#随机选取0到100间的偶数:

Random.randrange (0,101,2) #生成随机整数

#随机字符

Random.choice (') #传的是一个序列 (including strings, tuples, lists)

#多个字符中选取特定数量的字符

Random.sample (' sequence ', length)

#洗牌

Random.shuffle ([1,2,3,4,5,6,7,8,9])

Example:

1 # 4-bit pure digit verification Code 2 Import Random 3 checkcode='4 for in range (4):5     Current=random.randint (1,9)6     checkcode+=str (current)7  Print(Checkcode)

1 #Digital plus letter verification Code2 ImportRandom3Checkcode="'4  forIinchRange (4):5Current=random.randrange (0,4)6     ifCurrent = =I:7temp = Chr (Random.randint (65,90))8     Else:9temp = Random.randint (0,9)Tencheckcode+=Str (temp) One Print(Checkcode)

Python------module definition, import, optimization------->random module