使用python生成随机验证码的方法有很多种,今天小编给大家分享两种方法,大家可以灵活运用这两种方法,设计出适合自己的验证码方法。
方法一:
利用range方法,对于range方法不清楚的同学,请参考文章《python开发的range()函数》
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# -*- coding: utf-8 -*-
import random
def generate_verification_code( len = 6 ):
''' 随机生成6位的验证码 '''
# 注意: 这里我们生成的是0-9A-Za-z的列表,当然你也可以指定这个list,这里很灵活
# 比如: code_list = ['P','y','t','h','o','n','T','a','b'] # PythonTab的字母
code_list = []
for i in range ( 10 ): # 0-9数字
code_list.append( str (i))
for i in range ( 65 , 91 ): # 对应从“A”到“Z”的ASCII码
code_list.append( chr (i))
for i in range ( 97 , 123 ): #对应从“a”到“z”的ASCII码
code_list.append( chr (i))
myslice = random.sample(code_list, len ) # 从list中随机获取6个元素,作为一个片断返回
verification_code = ''.join(myslice) # list to string
return verification_code
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方法二:
利用randint方法
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# -*- coding: utf-8 -*-
import random
def generate_verification_code_v2():
''' 随机生成6位的验证码 '''
code_list = []
for i in range ( 2 ):
random_num = random.randint( 0 , 9 ) # 随机生成0-9的数字
# 利用random.randint()函数生成一个随机整数a,使得65<=a<=90
# 对应从“A”到“Z”的ASCII码
a = random.randint( 65 , 90 )
b = random.randint( 97 , 122 )
random_uppercase_letter = chr (a)
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
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测试:
code = generate_verification_code(6)
code2 = generate_verification_code_v2()
print code
print code2
输出结果:
Glc5Tr
Hr6t7B
我个人更倾向于第一种方法,更加灵活,可以随意设置验证码长度。
Python 随机生成中文验证码
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# -*- coding: utf-8 -*-
import Image,ImageDraw,ImageFont
import random
import math, string
class RandomChar():
"""用于随机生成汉字"""
@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 = ( 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)
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