from random import choice, randint, shuffle
from string import ascii_letters, digits
 
def randstr():
 
    #Generates a random string.
    #String consists of numbers 0-9, letters a-z & A-Z.
    #Letters and number can be in any order.
    #Final generated number stored in "rand" variable.
    #218,340,105,584,896 possible combinations!
 
    def digit_letter():
 
        global dig_let
 
        dig_let = randint(1,2)
 
        if dig_let == 1:
            dig_let = digits,digits,digits,digits,digits
        else:
            dig_let = ascii_letters
 
    shuffled = list("")
    x = list(range(4))
    for d in range(8):
        digit_letter()
        shuffled.append(choice(dig_let))
 
    shuffle(shuffled)
    count = ""
 
    rand = "".join(shuffled)
 
    print (rand)
    input ()
 
randstr()

from random import choice, randint, shuffle
from string import ascii_letters, digits
 
def randstr():
 
    #Generates a random string.
    #String consists of numbers 0-9, letters a-z & A-Z.
    #Letters and number can be in any order.
    #Final generated number stored in "rand" variable.
    #218,340,105,584,896 possible combinations!
 
    def digit_letter():
 
        global dig_let
 
        dig_let = randint(1,2)
 
        if dig_let == 1:
            str_dig = str(digits)
            dig_combo = str_dig + str_dig + str_dig + str_dig + str_dig
            dig_let = choice(dig_combo)
        else:
            dig_let = ascii_letters
 
    shuffled = list("")
    x = list(range(4))
    for d in range(8):
        digit_letter()
        shuffled.append(choice(dig_let))
 
    shuffle(shuffled)
    count = ""
 
    rand = "".join(shuffled)
 
    print (rand)
    input ()
 
randstr()

alnum = ascii_letter + (digits * 5)

    for d in range(8):
        shuffled.append(choice(alnum))

from random import choice, randint, shuffle
from string import ascii_letters, digits
 
#Generates a random string.
#String consists of numbers 0-9, letters a-z & A-Z.
#Letters and number can be in any order.
#Final generated number stored in "rand" variable.
#218,340,105,584,896 possible combinations!
 
def randstr():
 
    dig_let = str(digits)
    dig_let = (dig_let * 5) + ascii_letters 
 
    shuffled = list("")
    x = list(range(4))
    for d in range(8):
        shuffled.append(choice(dig_let))
 
    shuffle(shuffled)
 
    rand = "".join(shuffled)
 
    print (rand)
    input ()
 
randstr()

    shuffled = list(choice(dig_let) for d in range(8))

from random import *
 
def randstr():
 
    #Generates a random string.
    #String consists of numbers 1-9, letters a-z & A-Z.
    #Letters and number can be in any order.
    #Final generated number stored in "rand" variable.
    #767,544,201,216 possible combinations
 
    lower = ("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z")
    upper = ("A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z")
 
    ch = randint(1,2)
    if ch == 1:
        case1 = lower
    else:
        case1 = upper
 
    del ch
 
    ch = randint(1,2)
    if ch == 1:
        case2 = lower
    else:
        case2 = upper
 
    del ch
 
    ch = randint(1,2)
    if ch == 1:
        case3 = lower
    else:
        case3 = upper
 
    del ch
 
    ch = randint(1,2)
    if ch == 1:
        case4 = lower
    else:
        case4 = upper
 
    del ch
 
    test1x = choice(case1)
    test2x = choice(case2)
    test3x = choice(case3)
    test4x = choice(case4)
    test1y = randint(1,9)
    test2y = randint(1,9)
    test3y = randint(1,9)
    test4y = randint(1,9)
    strconv1 = str(test1y)
    strconv2 = str(test2y)
    strconv3 = str(test3y)
    strconv4 = str(test4y)
    shuffled = [test1x, strconv1, test2x, strconv2, test3x, strconv3, test4x, strconv4]
    shuffle(shuffled)
    count = 0
    for number in shuffled:
 
        if count == 0:
            sub_set = number
            count = count+1
 
        if count == 8:
                rand = sub_set
                quit
 
        if count != 0:
            if count != 8:
                sub_set = sub_set+number
                count = count+1
 
    print (rand)
    del test1x
    del test2x
    del test3x
    del test4x
    del test1y
    del test2y
    del test3y
    del test4y
    del strconv1
    del strconv2
    del strconv3
    del strconv4
    del shuffled
    del count
    del rand
    del sub_set
    del number
    input ()
 
randstr()

from random import choice, randint, shuffle
from string import ascii_letters, digits
 
#Generates a random string.
#String consists of numbers 0-9, letters a-z & A-Z.
#Letters and number can be in any order.
#Final generated number stored in "rand" variable.
#218,340,105,584,896 possible combinations!
 
def randstr():
 
    dig_let = (digits * 5) + ascii_letters 
 
    shuffled = list(choice(dig_let) for d in range (8))
 
    shuffle(shuffled)
 
    rand = "".join(shuffled)
 
    print (rand)
    input ()
 
randstr()

from random import choice
from string import ascii_letters, digits
dig_let = (digits * 5) + ascii_letters 
 
#Generates a random string.
#String consists of numbers 0-9, letters a-z & A-Z.
#Letters and number can be in any order.
#Final generated number stored in "rand" variable.
#218,340,105,584,896 possible combinations!
 
def randstr(size):
    return "".join(choice(dig_let) for d in range (size))
 
print(randstr(8))
input()