python program to generate random strings,numbers and export them to a file

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#!/usr/bin/env python3 # -*- coding: utf-8 -*- """ Created on Sun Mar 11 16:03:44 2018 @author: beast """ from random import * file_limit=50000 #a file with (size) number of characters with open ("random.txt","w") as file : for i in range (file_limit): start=choice([48,65,97]) #make choice among three group i.e whether new character should be a digit ,uppercase or lowercase character end=0 #initialize end with 0 if start==48:end=58 # deicde end point elif start==65:end=91 else:end=123 breakrnd=randint(0,2) breakrnd2=randint(0,2) breakrnd3=randint(0,2) breakrnd4=randint(0,2) rand=randrange(start,end)#now select any character from given range file.write("{0:c}".format(rand)) # writing character obtained from ascii code ... if breakrnd*breakrnd2*breakrnd3*breakrnd4==1 : # random places inserting breaks eg a new line or etc brk=choice(["\n","\t"," "]) file.write(brk)