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update dotdict
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‎README.md

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@@ -247,6 +247,12 @@ python的强大之处有很大的一方面在于它有各种各样非常强大
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## [delegator](content/delegator.md)
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## [graphic-verification-code](content/graphic-verification-code.md)
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## [bunch](content/bunch.md)
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## [halo](content/halo.md)
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## [tools](content/tools.md)
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## [Other_thing](content/other_thing.md)

‎code/A_dot_accessible_dictionary.py

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# -*- coding: utf-8 -*-
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class DotDict(dict):
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def __init__(self):
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super(DotDict, self).__init__()
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self.__dict__ = self
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if __name__ == '__main__':
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a = DotDict()
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a['name'] = 'windard'
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a.year = 24
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print a

‎code/bunch.md

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## bunch
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将字典转换为类对象使用，可以使用点来取得字典的值
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其实自己实现的话
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```
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# -*- coding: utf-8 -*-
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class DotDict(dict):
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def __init__(self):
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super(DotDict, self).__init__()
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self.__dict__ = self
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if __name__ == '__main__':
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a = DotDict()
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a['name'] = 'windard'
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a.year = 24
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print a
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```
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或者这样，这也是 `dotdict` 这个库的全部内容
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```
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# -*- coding: utf-8 -*-
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class DotDict(dict):
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__setattr__ = dict.__setitem__
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__getattr__ = dict.__getitem__
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__delattr__ = dict.__delitem__
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if __name__ == '__main__':
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a = DotDict()
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a['name'] = 'windard'
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a.year = 24
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print a
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print a.name
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```
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而 bunch 的实现是这样的
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```
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# -*- coding: utf-8 -*-
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class DotDict(dict):
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def __getattr__(self, item):
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try:
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return self[item]
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except KeyError:
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raise AttributeError(item)
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def __setattr__(self, key, value):
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try:
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self[key] = value
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except:
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raise AttributeError(key)
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def __delattr__(self, item):
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try:
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del self[item]
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except:
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raise AttributeError(item)
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if __name__ == '__main__':
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a = DotDict()
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a['name'] = 'windard'
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a.year = 24
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print a
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print a.name
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```
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基本上是一个思路，然后再加了一些捕获异常和类型转换，更容易的转换为其他的数据结构。
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‎code/halo_demo.py

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# coding=utf-8
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from halo import Halo
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spinner = Halo(text='Loading', spinner='dots')
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spinner.start()
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# Run time consuming work here
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# You can also change properties for spinner as and when you want
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spinner.stop()

‎code/pil_captcha.py

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# coding=utf-8
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try:
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import Image, ImageDraw, ImageFont, ImageFilter
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except ImportError:
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from PIL import Image, ImageDraw, ImageFont, ImageFilter
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import random
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# 随机字母:
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def rndChar():
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return chr(random.randint(65, 90))
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# 随机颜色1:
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def rndColor():
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return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))
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# 随机颜色2:
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def rndColor2():
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return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))
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if __name__ == '__main__':
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# 240 x 60:
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width = 60 * 4
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height = 60
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image = Image.new('RGB', (width, height), (255, 255, 255))
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# 创建Font对象:
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font = ImageFont.truetype('Arial.ttf', 36)
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# 创建Draw对象:
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draw = ImageDraw.Draw(image)
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# 填充每个像素:
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for x in range(width):
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for y in range(height):
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draw.point((x, y), fill=rndColor())
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# 输出文字:
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for t in range(4):
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draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
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# 模糊:
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image = image.filter(ImageFilter.BLUR)
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image.show()
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image.save('code.jpg', 'jpeg')

‎code/pil_convert.py

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img.save(des, "JPEG", quality=80, optimize=True, progressive=True)
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except IOError:
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ImageFile.MAXBLOCK = img.size[0] * img.size[1]
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img.save(des, "JPEG", quality=80, optimize=True, progressive=True)
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img.save(des, "JPEG", quality=80, optimize=True, progressive=True)

‎code/verification.py

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# coding=utf-8
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import gvcode
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img, code = gvcode.generate((240, 60))
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print code
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img.show()
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img.save('verification.jpg')

‎content/PIL.md

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@@ -62,48 +62,60 @@ contrast_pic.save("../images/test8.jpg")
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遇到了问题，还有其他的在安装opencv的时候也遇到了一个问题。
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`ImportError: The _imagingft C module is not installed`和` error: Unable to find vcvarsall.bat`，算了。不然就可以用Python写验证码了。
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`ImportError: The _imagingft C module is not installed` 和 `error: Unable to find vcvarsall.bat`，算了。不然就可以用Python写验证码了。
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[在Python中用PIL做验证码](http://www.zouyesheng.com/captcha.html)
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```python
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import Image, ImageDraw, ImageFont, ImageFilter
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# coding=utf-8
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try:
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import Image, ImageDraw, ImageFont, ImageFilter
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except ImportError:
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from PIL import Image, ImageDraw, ImageFont, ImageFilter
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import random
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# 随机字母:
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def rndChar():
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return chr(random.randint(65, 90))
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# 随机颜色1:
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def rndColor():
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return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))
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# 随机颜色2:
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def rndColor2():
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return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))
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# 240 x 60:
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width = 60 * 4
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height = 60
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image = Image.new('RGB', (width, height), (255, 255, 255))
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# 创建Font对象:
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font = ImageFont.truetype('Arial.ttf', 36)
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# 创建Draw对象:
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draw = ImageDraw.Draw(image)
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# 填充每个像素:
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for x in range(width):
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for y in range(height):
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draw.point((x, y), fill=rndColor())
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# 输出文字:
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for t in range(4):
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draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
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# 模糊:
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image = image.filter(ImageFilter.BLUR)
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image.show()
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image.save('code.jpg', 'jpeg');
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if __name__ == '__main__':
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# 240 x 60:
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width = 60 * 4
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height = 60
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image = Image.new('RGB', (width, height), (255, 255, 255))
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# 创建Font对象:
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font = ImageFont.truetype('Arial.ttf', 36)
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# 创建Draw对象:
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draw = ImageDraw.Draw(image)
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# 填充每个像素:
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for x in range(width):
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for y in range(height):
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draw.point((x, y), fill=rndColor())
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# 输出文字:
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for t in range(4):
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draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
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# 模糊:
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image = image.filter(ImageFilter.BLUR)
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image.show()
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image.save('code.jpg', 'jpeg')
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```
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或者使用 `graphic-verification-code`
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#### imageFilter
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图片模糊效果。

‎content/graphic-verification-code.md

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## graphic-verification-code
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国人写的图形验证码库，使用 PIL ，还算好用，只有两个函数
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- generate 生成图像和验证码，图像是 PIL Image 实例
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- base64 生成图像和验证码，图形是 Base64 编码过的
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```
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def generate(self, size=(120, 30), chars=None, format='PNG', mode='RGB', bg_color=(255, 255, 255), fg_color=(0, 0, 255), font_size=18, font_file=None, length=4, draw_lines=True, line_range=(1, 2), draw_points=True, point_chance=2):
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"""
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@param size: 图片的大小，格式（宽，高），默认为(120, 30)
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@param chars: 允许的字符集合，格式字符串
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@param format: 图片保存的格式，默认为 PNG，可选的为 GIF，JPEG，TIFF，PNG
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@param mode: 图片模式，默认为 RGB
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@param bg_color: 背景颜色，默认为白色
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@param fg_color: 前景色，验证码字符颜色，默认为蓝色 #0000FF
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@param font_size: 验证码字体大小
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@param font_file: 验证码字体，默认为 None
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@param length: 验证码字符个数
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@param draw_lines: 是否划干扰线
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@param line_range: 干扰线的条数范围，格式元组，默认为 (1, 2)，只有 draw_lines 为 True 时有效
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@param draw_points: 是否画干扰点
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@param point_chance: 干扰点出现的概率，大小范围 [0, 100]，只有 draw_points 为 True 时有效
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@return: [0]: PIL Image 实例
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@return: [1]: 验证码图片中的字符串
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"""
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```
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使用起来非常的简单
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```
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# coding=utf-8
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import gvcode
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img, code = gvcode.generate()
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print code
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img.show()
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img.save('verification.jpg')
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```
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也可以直接使用 PIL 生成验证码
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```
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# coding=utf-8
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try:
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import Image, ImageDraw, ImageFont, ImageFilter
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except ImportError:
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from PIL import Image, ImageDraw, ImageFont, ImageFilter
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import random
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# 随机字母:
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def rndChar():
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return chr(random.randint(65, 90))
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# 随机颜色1:
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def rndColor():
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return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))
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# 随机颜色2:
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def rndColor2():
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return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))
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if __name__ == '__main__':
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# 240 x 60:
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width = 60 * 4
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height = 60
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image = Image.new('RGB', (width, height), (255, 255, 255))
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# 创建Font对象:
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font = ImageFont.truetype('Arial.ttf', 36)
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# 创建Draw对象:
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draw = ImageDraw.Draw(image)
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# 填充每个像素:
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for x in range(width):
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for y in range(height):
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draw.point((x, y), fill=rndColor())
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# 输出文字:
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for t in range(4):
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draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
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# 模糊:
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image = image.filter(ImageFilter.BLUR)
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image.show()
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image.save('code.jpg', 'jpeg')
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```

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