Some fake data generation in Python 3

fakedata.py

from decimal import Decimal
from pprint import pprint
from random import choice, choices, randint


def random_digits(n):
    """Returns int with length `n`"""
    start = 10**(n-1)
    end = (10**n)-1
    return randint(start, end)

def random_precision(x, y):
    """return string of a decimal which in total is of length `x` with `y` places after radix point"""
    return str(Decimal(random_digits(x))/(10**y)) # very big `x` must be Decimals instead of normal floats!
  
# characters Harrison-Stetson'ed from: http://www.columbia.edu/~fdc/utf8/index.html#notes
# selection around the world 
CHARS='abcdefghijklmnopqrstuvwxyzχçéñônàășíåðæøäöëüзыянõēęžłıħġ我べ않아요'.upper() 

pprint([
    random_digits(7),
    random_precision(23, 2),
    (lambda n: ''.join(choices(CHARS, k=n)))(255),
])