Python randomly generates phone numbers, numbers

Python randomly generates phone numbers and numbers. The code is as follows:

#  -*-coding:gbk-*-

import random


#随机产生26个手机号: Start with 13, followed by an arbitrary number between a 4~9, followed by a 8-digit random number for
_ in range (26):
    print (' + ' +
          str (random.randrange (4,10)) +
          '. Join (STR (random.choice (range)) for _ in range (8))
          )


#随机产生26个数字: Produces a random decimal between a 0~1, multiplied by 1000, rounded to 3 digits after the decimal, plus a number #由于sample函数返回的结果是list类型的 between randomly generated 30~59
, where the 1th value
is fetched through [0] For I in range (num):
    print (Round (random.random () * 1000,3) + random.sample (range (30,60,3), 2) [0])

Introduction to Functions:

(1) Randrange: This function produces a range of any number between 4~9, noting that it does not contain 10.

>>> Random.randrange (5)
2
>>> random.randrange (1,5)
1

(2) Choice: The data source is a range (10), that is, from the 0~9 randomly select a number, multiple calls can produce duplicate values

>>> Random.choice ([' A ', ' B ', ' C ', ' d ', ' e '])
' B '
>>> random.choice ([' A ', ' B ', ' C ', ' d ', ' e '])
' d '
>>> random.choice ([' A ', ' B ', ' C ', ' d ', ' e '])
' C '
>>> random.choice ([' A ', ' B '], ' C ', ' d ', ' e '])
' B '

(3) Random: Generating random decimals from 0~1

>>> import Random
>>> random.random ()
0.7379992978183179
>>> random.random ( )
0.4720995823183177

(4) Sample: Data source is range (30,60,3), from 30~59 (step is 3), that is 30, 33, 36 ... In such numbers, select 2, and these 2 numbers will not repeat

>>> random.sample ([' A ', ' B ', ' C ', ' d ', ' e '],2)
[' d ', ' B ']
>>> random.sample (' A ', ' B ', ' C '), ' d ', ' e '],2 '
[' A ', ' B ']
>>> random.sample ([' A ', ' B ', ' C ', ' d ', ' e '],2)
[' E ', ' d ']

Other functions:

(5) Seed: to return the same random number, you can set the same seed

>>> random.seed (5)
>>> random.random ()
0.6229016948897019

>>> random.seed ( 5)
>>> random.random ()
0.6229016948897019

(6) Shuffle: random arrangement

>>> t=[0,1,2,3,4,5,6]
>>> t
[0, 1, 2, 3, 4, 5, 6]

>>> random.shuffle (t)
> >> T
[5, 4, 2, 0, 6, 1, 3]