安装:
1
|
pip3 install pillow |
基本使用
1. 创建图片
1
2
3
4
5
6
7
8
9
|
from PIL import Image
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
# 在图片查看器中打开 # img.show() # 保存在本地 with open ( 'code.png' , 'wb' ) as f:
img.save(f, format = 'png' )
|
2. 创建画笔,用于在图片上画任意内容
1
2
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
|
3. 画点
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示坐标 # 第二个参数:表示颜色 draw.point([ 100 , 100 ], fill = "red" )
draw.point([ 300 , 300 ], fill = ( 255 , 255 , 255 ))
|
4. 画线
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标和结束坐标 # 第二个参数:表示颜色 draw.line(( 100 , 100 , 100 , 300 ), fill = 'red' )
draw.line(( 100 , 100 , 300 , 100 ), fill = ( 255 , 255 , 255 ))
|
5. 画圆
1
2
3
4
5
6
7
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标和结束坐标(圆要画在其中间) # 第二个参数:表示开始角度 # 第三个参数:表示结束角度 # 第四个参数:表示颜色 draw.arc(( 100 , 100 , 300 , 300 ), 0 , 90 ,fill = "red" )
|
6. 写文本
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标 # 第二个参数:表示写入内容 # 第三个参数:表示颜色 draw.text([ 0 , 0 ], 'python' , "red" )
|
7. 特殊字体文字
1
2
3
4
5
6
7
8
9
10
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示字体文件路径 # 第二个参数:表示字体大小 font = ImageFont.truetype( "kumo.ttf" , 28 )
# 第一个参数:表示起始坐标 # 第二个参数:表示写入内容 # 第三个参数:表示颜色 # 第四个参数:表示颜色 draw.text([ 0 , 0 ], 'python' , "red" , font = font)
|
图片验证码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
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():
"""
生成随机字母
:return:
"""
return chr (random.randint( 65 , 90 ))
def rndColor():
"""
生成随机颜色
:return:
"""
return (random.randint( 0 , 255 ), random.randint( 10 , 255 ), random.randint( 64 , 255 ))
# 写文字
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())
# 写干扰点
for i in range ( 40 ):
draw.point([random.randint( 0 , width), random.randint( 0 , height)], fill = rndColor())
# 写干扰圆圈
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())
# 画干扰线
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. 直接打开
# img,code = check_code()
# img.show()
# 2. 写入文件
# img,code = check_code()
# with open('code.png','wb') as f:
# img.save(f,format='png')
# 3. 写入内存(Python3)
# from io import BytesIO
# stream = BytesIO()
# img.save(stream, 'png')
# stream.getvalue()
# 4. 写入内存(Python2)
# import StringIO
# stream = StringIO.StringIO()
# img.save(stream, 'png')
# stream.getvalue()
pass
|
注意:字体文件下载,猛击这里
def code(request): f = BytesIO() # 创建图片 img = Image.new(mode="RGB", size=(120, 30), color=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))) # 创建画笔 draw = ImageDraw.Draw(img, mode='RGB') draw.arc((0, 0, 30, 30), 0, 360, fill="red") # 随机生成4位验证码 str_code = '' for i in range(4): a1 = chr(random.randint(65, 90)) a2 = chr(random.randint(97, 122)) a3 = random.randint(0, 9) str_num = random.choice([a1, a2, str(a3)]) # 每次生成的随机数保存在列表中 str_code+=str_num # 选择字体 font = ImageFont.truetype("Monaco.ttf", 28) # 写字 draw.text([i * 35, 0], str_num, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)), font=font) print(str_code) # 将验证码存在session中,方便后面取出来与用户输入的进行验证 request.session["str_code"] = str_code # 将图片保存在内存中 img.save(f, format="png") # 读取内存中的图片 data = f.getvalue() return HttpResponse(data) 生成验证码返回前端页面
生成验证码返回前端页面
安装:
1
|
pip3 install pillow |
基本使用
1. 创建图片
1
2
3
4
5
6
7
8
9
|
from PIL import Image
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
# 在图片查看器中打开 # img.show() # 保存在本地 with open ( 'code.png' , 'wb' ) as f:
img.save(f, format = 'png' )
|
2. 创建画笔,用于在图片上画任意内容
1
2
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
|
3. 画点
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示坐标 # 第二个参数:表示颜色 draw.point([ 100 , 100 ], fill = "red" )
draw.point([ 300 , 300 ], fill = ( 255 , 255 , 255 ))
|
4. 画线
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标和结束坐标 # 第二个参数:表示颜色 draw.line(( 100 , 100 , 100 , 300 ), fill = 'red' )
draw.line(( 100 , 100 , 300 , 100 ), fill = ( 255 , 255 , 255 ))
|
5. 画圆
1
2
3
4
5
6
7
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标和结束坐标(圆要画在其中间) # 第二个参数:表示开始角度 # 第三个参数:表示结束角度 # 第四个参数:表示颜色 draw.arc(( 100 , 100 , 300 , 300 ), 0 , 90 ,fill = "red" )
|
6. 写文本
1
2
3
4
5
6
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示起始坐标 # 第二个参数:表示写入内容 # 第三个参数:表示颜色 draw.text([ 0 , 0 ], 'python' , "red" )
|
7. 特殊字体文字
1
2
3
4
5
6
7
8
9
10
|
img = Image.new(mode = 'RGB' , size = ( 120 , 30 ), color = ( 255 , 255 , 255 ))
draw = ImageDraw.Draw(img, mode = 'RGB' )
# 第一个参数:表示字体文件路径 # 第二个参数:表示字体大小 font = ImageFont.truetype( "kumo.ttf" , 28 )
# 第一个参数:表示起始坐标 # 第二个参数:表示写入内容 # 第三个参数:表示颜色 # 第四个参数:表示颜色 draw.text([ 0 , 0 ], 'python' , "red" , font = font)
|
图片验证码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
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():
"""
生成随机字母
:return:
"""
return chr (random.randint( 65 , 90 ))
def rndColor():
"""
生成随机颜色
:return:
"""
return (random.randint( 0 , 255 ), random.randint( 10 , 255 ), random.randint( 64 , 255 ))
# 写文字
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())
# 写干扰点
for i in range ( 40 ):
draw.point([random.randint( 0 , width), random.randint( 0 , height)], fill = rndColor())
# 写干扰圆圈
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())
# 画干扰线
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. 直接打开
# img,code = check_code()
# img.show()
# 2. 写入文件
# img,code = check_code()
# with open('code.png','wb') as f:
# img.save(f,format='png')
# 3. 写入内存(Python3)
# from io import BytesIO
# stream = BytesIO()
# img.save(stream, 'png')
# stream.getvalue()
# 4. 写入内存(Python2)
# import StringIO
# stream = StringIO.StringIO()
# img.save(stream, 'png')
# stream.getvalue()
pass
|
注意:字体文件下载,猛击这里
def code(request): f = BytesIO() # 创建图片 img = Image.new(mode="RGB", size=(120, 30), color=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))) # 创建画笔 draw = ImageDraw.Draw(img, mode='RGB') draw.arc((0, 0, 30, 30), 0, 360, fill="red") # 随机生成4位验证码 str_code = '' for i in range(4): a1 = chr(random.randint(65, 90)) a2 = chr(random.randint(97, 122)) a3 = random.randint(0, 9) str_num = random.choice([a1, a2, str(a3)]) # 每次生成的随机数保存在列表中 str_code+=str_num # 选择字体 font = ImageFont.truetype("Monaco.ttf", 28) # 写字 draw.text([i * 35, 0], str_num, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)), font=font) print(str_code) # 将验证码存在session中,方便后面取出来与用户输入的进行验证 request.session["str_code"] = str_code # 将图片保存在内存中 img.save(f, format="png") # 读取内存中的图片 data = f.getvalue() return HttpResponse(data) 生成验证码返回前端页面
生成验证码返回前端页面
本站文章如无特殊说明,均为本站原创,如若转载,请注明出处:Django【十五】pillow模块使用 python-随机验证码pillow模块使用 - Python技术站