Python random module from the entry to the autistic

1. Import: import random

2. Random Decimal: random.random (): decimal between greater than 0 and less than 1

3. Decimal between specified number does not include the specified maximum: random.uniform ()

4. Random integer: random.randint (1,5): greater than or equal to 1 and less than equal to an integer between 5

5. Designated odd or even, using steps: random.randrange (1,19, step)

6. And randomly select a return, there will be a repeating element, returns a list form: random.choice ((1,2,3,), k = 3), 3 elements appear

7. Arbitrarily selected three elements appear, will not be repeated: random.sample ([1 "23" 3432] k = 3)

8. random.shuffle (): scramble input, in situ (primary memory) disrupted

   练习：随机生成验证码
   import random
   
   def v_code():
   
       code = ''
       for i in range(5):
   
           num=random.randint(0,9)
           alf=chr(random.randint(65,90))
           add=random.choice([num,alf])
           code="".join([code,str(add)])
   
       return code
   
   print(v_code())