Two methods of generating random verification codes in Python

There are many ways to generate random verification code using Python, today's small series to share two methods, we can flexibly use these two methods to design a suitable verification code method.

Method One:

Use the Range method, for students who are not clear about the range method, please refer to the article "range () function developed by Python"

#-*-Coding:utf-8-*-import randomdef generate_verification_code (len=6): ' Randomly generate 6-bit Verification code ' # Note: Here we generate a list of 0-9a-za-z, when You can also specify this list, which is very flexible # for example: Code_list = [' P ', ' y ', ' t ', ' h ', ' o ', ' n ', ' t ', ' a ', ' B '] # Pythontab's Letter code_list = [] For  I in Ran GE (10): # 0-9 Digital  code_list.append (str (i)) for I in range (65, 91): # ASCII code from "a" to "Z"  code_list.append (Chr (i)) For I in range (123): ASCII code for #对应从 "a" to "Z"  code_list.append (Chr (i)) Myslice = Random.sample (Code_list, Len) # from List Randomly gets 6 elements, returning as a fragment Verification_code = '. Join (myslice) # List to string return Verification_code

Method Two:

Using the Randint method

#-*-Coding:utf-8-*-import randomdef generate_verification_code_v2 (): "' randomly generate 6-bit captcha ' code_list = [] for I in range ( 2):  random_num = random.randint (0, 9) # randomly generates 0-9 numbers  # Use the Random.randint () function to generate a random integer A, which makes the 65<=a<=90  # For ASCII code from "a" to "Z"  a = Random.randint (+)  B = Random.randint (122)  random_uppercase_letter = Chr (A) C6/>random_lowercase_letter = Chr (b)  code_list.append (str (random_num))  Code_list.append (random_uppercase _letter)  code_list.append (random_lowercase_letter) Verification_code = ". Join (code_list) return Verification_ Code

Test:

Code = Generate_verification_code (6)
Code2 = GENERATE_VERIFICATION_CODE_V2 ()
Print Code
Print Code2

Output Result:

Glc5tr
hr6t7b

I personally prefer the first method, more flexible, can be arbitrarily set the length of the verification code.

Python randomly generates Chinese verification code

#-*-coding:utf-8-*-import image,imagedraw,imagefont import random import Math, String Class Randomchar (): "" "for randomly generated Han Word "" "@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 <&lt ; 8) | (Body << 4) | Tail str = "%x"% val return str.decode (' hex '). Decode (' gb2312 ') class Imagechar (): Def __init__ (self, fontcolor = (0, 0 , 0), size = (+, +), Fontpath = ' WQY.TTC ', BgColor = (255, 255, 255), fontSize =): Self.siz E = Size Self.fontpath = Fontpath Self.bgcolor = BgColor Self.fontsize = fontSize Self.fontcolor = FontColor Self.fon t = Imagefont.truetype (Self.fontpath, self.fontsize) self.image = image.new (' RGB ', size, bgColor) def rotate (self): sel F.image.rotate (random.randint (0), 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)), Ra Ndomchar ().  GB2312 (), Self.randrgb ()) self.rotate () Self.randline def save (Self, Path): Self.image.save (Path)

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