""" Purpose: introduce some another function from module random
"""

# by default the random module produces different interactions everytime we use it

import random # always import the library random --> will give you access to functions inside it

#random.seed( 1112 )
# random.seed( something )
    # use <something> as the "starting point" of the random machine
    # <something> can be ANYTHING
    # will give you the SAME "random" results every time you rerun the program

# random function choice( seq ) when a given a sequence as a parameter returns
# a random element from the sequence

### get a string and choose four of its characters (repetition allowed)
s = input( "Enter a string: " )

# random.choice( sequence )
    # sequence can be a string --> get a random character from string
    # different every time you run the program
    # different for every machine
i1 = random.choice( s )
i2 = random.choice( s )
i3 = random.choice( s )
i4 = random.choice( s )

print ()

print( "Four random characters from string", s, ": ", i1, i2, i3, i4 )

print ()

### get a list of words and choose four (repetition allowed)
reply = input( "Enter some words: " )

user_words  = reply.split() # get list of words from the reply

# here the sequence is a list, so random.choice() will choose a random ELEMENT in the list instead
w1 = random.choice( user_words )
w2 = random.choice( user_words )
w3 = random.choice( user_words )
w4 = random.choice( user_words )

print( "Four random words from list", user_words, ":",  w1, w2, w3, w4 )