Python generates verification code instances

This article mainly introduces how to generate a verification code in Python, which has good practical value and clear code structure. if you need it, refer to the example below to demonstrate how to generate a verification code in Python, it has good practical value. Share it with you for your reference. The specific implementation method is as follows:

The front-end page code is as follows:

    
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Script function refreshCode () {$ ('authcode _ img '). src = "/registration/makeimage/" + Math. random ();} script

The background program is as follows:

Import StringIOimport Image, ImageDraw, ImageFont, and random # The corresponding module must be installed from xxx. settings import authcode_font # make sure that the modified font contains def make_image (request): mp = hashlib. md5 () mp. update (str (datetime. datetime. now () + str (random. random () mp_src = mp. hexdigest () rand_str = mp_src [0: 6] font = ImageFont. truetype (authcode_font, 25) width = 75 height = 30 im = Image. new ('rgb ', (width, height),' # % s' % mp_src [-7:-1]) draw = ImageDraw. draw (im) draw. line (random. randint (0, width), random. randint (0, height), random. randint (0, width), random. randint (0, height) draw. line (random. randint (0, width), random. randint (0, height), random. randint (0, width), random. randint (0, height) draw. line (random. randint (0, width), random. randint (0, height), random. randint (0, width), random. randint (0, height) draw. line (random. randint (0, width), random. randint (0, height), random. randint (0, width), random. randint (0, height) draw. line (random. randint (0, width), random. randint (0, height), random. randint (0, width), random. randint (0, height) draw. text (5, 2), rand_str, font = font) del draw buffer = StringIO. stringIO () im. save (buffer, 'jpeg ') httpResponse = HttpResponse (content = buffer. getvalue (), mimetype = "image/jpeg") request. session ['auth _ Code'] = rand_str return httpResponse

The program effect is as follows: