What does random sample method in python do

Question

I Googled it a lot but could not found it  I want to know the use of random sample   method and what does it give  When should it be used and some example usage

User · Answer

random sample population  k    It is used for randomly sampling a sample of length  k  from a population  returns a  k  length list of unique elements chosen from the population sequence or set  it returns a new list and leaves the original population unchanged and the resulting list is in selection order so that all sub-slices will also be valid random samples  I am putting up an example in which I am splitting a dataset randomly  It is basically a function in which you pass x train population  as an argument and return indices of 60  of the data as D test   import random  def randomly select 70 percent of data from 1 to length x train       return random sample range 0  len x train    int 0 6 len x train

User · Answer

random sample   also works on text   example    gt  text   open  textfile txt   read      gt  random sample text  5    gt    f    s    y    v     n      n is also seen as a character so that can also be returned  you could use random sample   to return random words from a text file if you first use the split method  example    gt  words   text split     gt  random sample words  5    gt    the    and    a    her    of

User · Answer

According to documentation      random sample population  k        Return a k length list of unique elements   chosen from the population sequence  Used for random sampling without   replacement    Basically  it picks k unique random elements  a sample  from a sequence    gt  gt  gt  import random  gt  gt  gt  c   list range 0  15    gt  gt  gt  c  0  1  2  3  4  5  6  7  8  9  10  11  12  13  14   gt  gt  gt  random sample c  5   9  2  3  14  11    random sample works also directly from a range    gt  gt  gt  c   range 0  15   gt  gt  gt  c range 0  15   gt  gt  gt  random sample c  5   12  3  6  14  10    In addition to sequences  random sample works with sets too    gt  gt  gt  c    1  2  4   gt  gt  gt  random sample c  2   4  1    However  random sample doesn t work with arbitrary iterators    gt  gt  gt  c    1  3   gt  gt  gt  random sample iter c   5  TypeError  Population must be a sequence or set   For dicts  use list d

[python] What does random.sample() method in python do?

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