Python basics-People's favorite standard library (random time)

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Random
Includes functions that return random numbers.
This is like C + +, which produces pseudo-random numbers, not completely random numbers.
Some important functions in the random:

random   ()  returns the random number of 0<n  <=1 n  getrandbits   (n)  returns n  random bit   (A, B)  returns the random number n , a  <=n  <b  Span class= "Hljs-title" >choice   from sequence seq The  returns any element shuffle   (Seq[,random])  Specify the sequence in situ Span class= "Hljs-title" >seq  sample   (seq, n)  Select 

Simple and useful:

printrandom.uniform(10,20)printrandom.uniform(20,10)#----结果（不同机器上的结果不一样）#18.7356606526#12.5798298022randomrandom.random()0.85415370477785668random.uniform(110)5.4221167969800881

Time
The time module includes the following features:
Get current time, operation time, and date
Read time from string, format time as String
Some functions:

asctime([tuple]) 将时间元组转换为字符串localtime([secs]) 将秒数转为日期元组sleep(secs)  睡secs秒

Import Time  if__name__==' __main__ ': Time.Sleep(1)Print "Clock1:%s"% Time. Clock () Time.Sleep(1)Print "Clock2:%s"% Time. Clock () Time.Sleep(1)Print "Clock3:%s"% Time. Clock ()

The following are the date formatting symbols:

%y Two-digit year representation (00-99)%Y A four-digit year representation (000-9999)%m Month (01-12)%D Day of the Month (0-31)%H 24-hour hours (0-23)%I 12-hour hours (01-12)%M Number of minutes (00=59)%S Seconds (00-59)%a Local Simplified Week name%A Local Full week name%B Locally Simplified month name%B Local Full month name%C Local corresponding date representation and time representation%J Day of the Year (001-366)%P equivalent of local a.m. or p.m.%U Number of weeks in the year (00-53) Sunday is the beginning of the week%W Week (0-6), Sunday for the beginning of the week%W Number of weeks in the year (00-53) Monday is the beginning of the week%x The local corresponding date representation%X Local corresponding time representation%Z The name of the current time zone  %% number itself

Python basics-People's favorite standard library (random time)