Organize Python to generate random Chinese image verification code source code

When logging on to many websites, they no longer use simple English and digital verification codes. In order to prevent attacks by disgusting registration and group-sending software, they are now using Chinese verification codes.

Today, we will share with you the source code of a random Chinese verification code image generated using Python.

 

The code is as follows:

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#-*-Coding: UTF-8 -*- Import Image, ImageDraw, ImageFont Import random Import math, string Class RandomChar (): "Used to randomly generate Chinese characters """ @ Staticmethod Def Unicode (): Val = random. randint (0x4E00, 0x9FBF) Return unichr (val) @ Staticmethod Def GB2312 (): Head = random. randint (0xB0, 0xCF) Body = random. randint (0xA, 0xF) Tail = random. randint (0, 0xF) Val = (head <8) | (body <4) | tail Str = "% x" % val Return str. decode ('Hex'). decode ('gb2312 ') Class ImageChar (): Def _ init _ (self, fontColor = (0, 0, 0 ), Size = (100, 40 ), FontPath = 'wqy. ttc ', BgColor = (1, 255,255,255 ), FontSize = 20 ): Self. size = size Self. fontPath = fontPath Self. bgColor = bgColor Self. fontSize = fontSize Self. fontColor = fontColor Self. font = ImageFont. truetype (self. fontPath, self. fontSize) Self. image = Image. new ('rgb ', size, bgColor) Def rotate (self ): Self. image. rotate (random. randint (0, 30), expand = 0) Def drawText (self, pos, txt, fill ): Draw = ImageDraw. Draw (self. image) Draw. text (pos, txt, font = self. font, fill = fill) Del draw Def randRGB (self ): Return (random. randint (0,255 ), Random. randint (0,255 ), Random. randint (0,255 )) Def randPoint (self ): (Width, height) = self. size Return (random. randint (0, width), random. randint (0, height )) Def randLine (self, num ): Draw = ImageDraw. Draw (self. image) For I in range (0, num ): Draw. line ([self. randPoint (), self. randPoint ()], self. randRGB ()) Del draw Def randChinese (self, num ): Gap = 5 Start = 0 For I in range (0, num ): Char = RandomChar (). GB2312 () X = start + self. fontSize * I + random. randint (0, gap) + gap * I Self. drawText (x, random. randint (-5, 5), RandomChar (). GB2312 (), self. randRGB ()) Self. rotate () Self. randLine (18) Def save (self, path ): Self. image. save (path)

 

Generate a verification code using python (complete webpy verification code class)

Python can generate verification codes using mature wheezy. captcha. First install the PIL package easy_install PIL, and then install wheezy. captcha easy_install wheezy. captcha.

It is easy to generate a verification code after installation:

 

The code is as follows:	Copy code
Captcha_image_t = captcha (drawings = [ Background (), Text (fonts = [ Path. join (_ fontsDir, '2017 ___. Ttf '), Path. join (_ fontsDir, 'andyb. Ttf')], Drawings = [ Warp (), Rotate (), Offset () ]), Curve (), Noise (), Smooth () ]) Chars_t = random. sample (_ chars, 4) Image_t = captcha_image_t (chars_t) Image_t.save('test.jpeg ', 'jpeg', quality = 75)

 

The verification code diagram is as follows:

Captcha

The implementation of the complete webpy verification code generation class is as follows:

 

The code is as follows:

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#! /Usr/bin/env python # Coding: UTF-8 _ Author _ = 'outofmemory. Cn' From wheezy. captcha. image import captcha From wheezy. captcha. image import background From wheezy. captcha. image import curve From wheezy. captcha. image import noise From wheezy. captcha. image import smooth From wheezy. captcha. image import text From wheezy. captcha. image import offset From wheezy. captcha. image import rotate From wheezy. captcha. image import warp Import random Import web From OS import path Try: From cStringIO import StringIO Except t: From StringIO import StringIO If _ name _ = '_ main __': Import OS, sys WebPath = OS. path. dirname (OS. path. dirname (OS. path. abspath (_ file __))) Sys. path. insert (0, webPath) From run import session _ ControllersDir = path. abspath (path. dirname (_ file __)) _ WebDir = path. dirname (_ controllersDir) _ FontsDir = path. join (path. dirname (_ webDir), 'fonts ') _ Chars = 'abcdefjhjklmnpqrstuvwxy3456789' SESSION_KEY_CAPTCHA = 'captcha' Def isValidCaptcha (captchaInputName = 'captcha '): UserInputVal = web. input (). get (captchaInputName) If not userInputVal: return False CorrectVal = session [SESSION_KEY_CAPTCHA] Return userInputVal. upper () = correctVal Class Captcha: '''Verification code ''' Def GET (self ): Captcha_image = captcha (drawings = [ Background (), Text (fonts = [ Path. join (_ fontsDir, '2017 ___. Ttf '), Path. join (_ fontsDir, 'andyb. Ttf')], Drawings = [ Warp (), Rotate (), Offset () ]), Curve (), Noise (), Smooth () ]) Chars = random. sample (_ chars, 4) Session [SESSION_KEY_CAPTCHA] = ''. join (chars) Image = captcha_image (chars) Out = StringIO () Image. save (out, "jpeg", quality = 75) Web. header ('content-type', 'image/jpeg ') Return out. getvalue () If _ name _ = '_ main __': Print _ fontsDir Captcha_image_t = captcha (drawings = [ Background (), Text (fonts = [ Path. join (_ fontsDir, '2017 ___. Ttf '), Path. join (_ fontsDir, 'andyb. Ttf')], Drawings = [ Warp (), Rotate (), Offset () ]), Curve (), Noise (), Smooth () ]) Chars_t = random. sample (_ chars, 4) Image_t = captcha_image_t (chars_t) Image_t.save('test.jpeg ', 'jpeg', quality = 75)

 

The font files used in the program should be placed under the fonts directory of the same level in the web directory. The Two font files in the program are copies of the windows font, which can be used normally in linux. Pay attention to the case of the extension.