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需要把一段文字转换成图片，我找到了PIL（Python Imaging Library）库，专门干这个用的。还有一个Pillow是“friendly PIL fork”，于是我选择了后者。
安装过程稍有曲折，主要是要先把它的依赖库安装就绪，再装Pillow，过程如下：
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" # 安装brew sudo easy_install pip #安装pip brew install libzip # 安装libzip ln -s /usr/local/include/freetype2 /usr/local/include/freetype ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/X11 /usr/local/include/X11 sudo pip install pillow # 安装pillow
刚开始我在没有安装libzip和freetype之前，直接安装了pillow，会报出如下错误：
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/tk.h:78:11: fatal error: ‘X11/Xlib.h‘ file not found # include <X11/Xlib.h> ^ 1 error generated. error: command ‘cc‘ failed with exit status 1
font = PIL.ImageFont.truetype(‘Helvetical‘, 16) File "/Library/Python/2.7/site-packages/PIL/ImageFont.py", line 218, in truetype return FreeTypeFont(filename, size, index, encoding) File "/Library/Python/2.7/site-packages/PIL/ImageFont.py", line 134, in __init__ self.font = core.getfont(file, size, index, encoding) File "/Library/Python/2.7/site-packages/PIL/ImageFont.py", line 34, in __getattr__ raise ImportError("The _imagingft C module is not installed") ImportError: The _imagingft C module is not installed
IOError: encoder zip not available
将前面的依赖库安装就绪之后，这些问题就都解决了。
写段代码如下：
import loggingimport PIL.Image import PIL.ImageDraw import PIL.ImageFont class Main(object): def text2png(self, text, fontName, fontSize, pngPath): font = PIL.ImageFont.truetype(fontName, fontSize) width, height = font.getsize(text) logging.debug(‘(width, height) = (%d, %d)‘ % (width, height)) image = PIL.Image.new(‘RGBA‘, (width, height), (0, 0, 0, 0)) # 设置透明背景 draw = PIL.ImageDraw.Draw(image) draw.text((0, 0), text, font = font, fill = ‘#000000‘) image.save(pngPath) def Main(self): text = u‘ ^_^ ‘ fontName = ‘/Library/Fonts/华文黑体.ttf‘ pngPath = ‘test.png‘ self.text2png(text, fontName, 37, pngPath)
即可将字符‘ ^_^ ‘转为图片，如下
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原文地址：http://www.cnblogs.com/palance/p/4809798.html
