useragent.py

import random

def getUserAgent():
    platform = random.choice(['Macintosh', 'Windows', 'X11'])
    if platform == 'Macintosh':
        os  = random.choice(['68K', 'PPC'])
    elif platform == 'Windows':
        os  = random.choice(['Win3.11', 'WinNT3.51', 'WinNT4.0', 'Windows NT 5.0', 'Windows NT 5.1', 'Windows NT 5.2', 'Windows NT 6.0', 'Windows NT 6.1', 'Windows NT 6.2', 'Win95', 'Win98', 'Win 9x 4.90', 'WindowsCE'])
    elif platform == 'X11':
        os  = random.choice(['Linux i686', 'Linux x86_64'])
    browser = random.choice(['chrome', 'firefox', 'ie'])
    if browser == 'chrome':
        webkit = str(random.randint(500, 599))
        version = str(random.randint(0, 24)) + '.0' + str(random.randint(0, 1500)) + '.' + str(random.randint(0, 999))
        return 'Mozilla/5.0 (' + os + ') AppleWebKit/' + webkit + '.0 (KHTML, live Gecko) Chrome/' + version + ' Safari/' + webkit
    elif browser == 'firefox':
        year = str(random.randint(2000, 2012))
        month = random.randint(1, 12)
        if month < 10:
            month = '0' + str(month)
        else:
            month = str(month)
        day = random.randint(1, 30)
        if day < 10:
            day = '0' + str(day)
        else:
            day = str(day)
        gecko = year + month + day
        version = random.choice(['1.0', '2.0', '3.0', '4.0', '5.0', '6.0', '7.0', '8.0', '9.0', '10.0', '11.0', '12.0', '13.0', '14.0', '15.0'])
        return 'Mozilla/5.0 (' + os + '; rv:' + version + ') Gecko/' + gecko + ' Firefox/' + version
    elif browser == 'ie':
        version = str(random.randint(1, 10)) + '.0'
        engine = str(random.randint(1, 5)) + '.0'
        option = random.choice([True, False])
        if option == True:
            token = random.choice(['.NET CLR', 'SV1', 'Tablet PC', 'Win64; IA64', 'Win64; x64', 'WOW64']) + '; '
        elif option == False:
            token = ''
        return 'Mozilla/5.0 (compatible; MSIE ' + version + '; ' + os + '; ' + token + 'Trident/' + engine + ')'