django隨機驗證碼
阿新 • • 發佈:2018-01-22
.get ins ble int efi 大小 eight from django
Python生成隨機驗證碼,需要使用PIL模塊.
安裝:
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pip3 install pillow
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基本使用
1. 創建圖片
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from PIL import Image
img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
# 在圖片查看器中打開
# img.show()
# 保存在本地
with open ( ‘code.png‘ , ‘wb‘ ) as f:
img.save(f, format = ‘png‘ )
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2. 創建畫筆,用於在圖片上畫任意內容
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
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3. 畫點
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
# 第一個參數:表示坐標
# 第二個參數:表示顏色
draw.point([ 100 , 100 ], fill = "red" )
draw.point([ 300 , 300 ], fill = ( 255 , 255 , 255 ))
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4. 畫線
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
# 第一個參數:表示起始坐標和結束坐標
# 第二個參數:表示顏色
draw.line(( 100 , 100 , 100 , 300 ), fill = ‘red‘ )
draw.line(( 100 , 100 , 300 , 100 ), fill = ( 255 , 255 , 255 ))
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5. 畫圓
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
# 第一個參數:表示起始坐標和結束坐標(圓要畫在其中間)
# 第二個參數:表示開始角度
# 第三個參數:表示結束角度
# 第四個參數:表示顏色
draw.arc(( 100 , 100 , 300 , 300 ), 0 , 90 ,fill = "red" )
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6. 寫文本
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
# 第一個參數:表示起始坐標
# 第二個參數:表示寫入內容
# 第三個參數:表示顏色
draw.text([ 0 , 0 ], ‘python‘ , "red" )
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7. 特殊字體文字
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img = Image.new(mode = ‘RGB‘ , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
# 第一個參數:表示字體文件路徑
# 第二個參數:表示字體大小
font = ImageFont.truetype( "kumo.ttf" , 28 )
# 第一個參數:表示起始坐標
# 第二個參數:表示寫入內容
# 第三個參數:表示顏色
# 第四個參數:表示顏色
draw.text([ 0 , 0 ], ‘python‘ , "red" , font = font)
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圖片驗證碼
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import random
def check_code(width = 120 , height = 30 , char_length = 5 , font_file = ‘kumo.ttf‘ , font_size = 28 ):
code = []
img = Image.new(mode = ‘RGB‘ , size = (width, height), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = ‘RGB‘ )
def rndChar():
"""
生成隨機字母
:return:
"""
return chr (random.randint( 65 , 90 ))
def rndColor():
"""
生成隨機顏色
:return:
"""
return (random.randint( 0 , 255 ), random.randint( 10 , 255 ), random.randint( 64 , 255 ))
# 寫文字
font = ImageFont.truetype(font_file, font_size)
for i in range (char_length):
char = rndChar()
code.append(char)
h = random.randint( 0 , 4 )
draw.text([i * width / char_length, h], char, font = font, fill = rndColor())
# 寫幹擾點
for i in range ( 40 ):
draw.point([random.randint( 0 , width), random.randint( 0 , height)], fill = rndColor())
# 寫幹擾圓圈
for i in range ( 40 ):
draw.point([random.randint( 0 , width), random.randint( 0 , height)], fill = rndColor())
x = random.randint( 0 , width)
y = random.randint( 0 , height)
draw.arc((x, y, x + 4 , y + 4 ), 0 , 90 , fill = rndColor())
# 畫幹擾線
for i in range ( 5 ):
x1 = random.randint( 0 , width)
y1 = random.randint( 0 , height)
x2 = random.randint( 0 , width)
y2 = random.randint( 0 , height)
draw.line((x1, y1, x2, y2), fill = rndColor())
img = img. filter (ImageFilter.EDGE_ENHANCE_MORE)
return img,‘‘.join(code)
if __name__ = = ‘__main__‘ :
# 1. 直接打開
# img,code = check_code()
# img.show()
# 2. 寫入文件
# img,code = check_code()
# with open(‘code.png‘,‘wb‘) as f:
# img.save(f,format=‘png‘)
# 3. 寫入內存(Python3)
# from io import BytesIO
# stream = BytesIO()
# img.save(stream, ‘png‘)
# stream.getvalue()
# 4. 寫入內存(Python2)
# import StringIO
# stream = StringIO.StringIO()
# img.save(stream, ‘png‘)
# stream.getvalue()
pass
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django隨機驗證碼