发布于 2014-10-20 14:34:12 | 391 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Python教程，程序狗速度看过来！
Python编程语言
Python 是一种面向对象、解释型计算机程序设计语言，由Guido van Rossum于1989年底发明，第一个公开发行版发行于1991年。Python语法简洁而清晰，具有丰富和强大的类库。它常被昵称为胶水语言，它能够把用其他语言制作的各种模块（尤其是C/C++）很轻松地联结在一起。
本文为大家讲解了Python中读取图片EXIF信息类库的介绍和使用方法及示例代码,例如Python Imaging Library、EXIF.py等,需要的朋友可以参考下
首先要介绍的是 Python Imaging Library，使用方法如下：
from PIL import Image
from PIL.ExifTags import TAGS
def get_exif_data(fname):
"""Get embedded EXIF data from image file."""
ret = {}
try:
img = Image.open(fname)
if hasattr( img, '_getexif' ):
exifinfo = img._getexif()
if exifinfo != None:
for tag, value in exifinfo.items():
decoded = TAGS.get(tag, tag)
ret[decoded] = value
except IOError:
print 'IOERROR ' + fname
return ret
if __name__ == '__main__':
fileName = 'C:/Users/Leyond/Desktop/IMG_20121122_153514.jpg'
exif = get_exif_data(fileName)
print exif
返回的清单如下：
ExifVersion
ComponentsConfiguration
ExifImageWidth
DateTimeOriginal
DateTimeDigitized
ExifInteroperabilityOffset
FlashPixVersion
MeteringMode
LightSource
Flash
FocalLength
41986
ImageDescription
Make
Model
Orientation
YCbCrPositioning
41988
XResolution
YResolution
59932
ExposureTime
ExposureProgram
ColorSpace
41990
ISOSpeedRatings
ResolutionUnit
41987
FNumber
Software
DateTime
ExifImageHeight
ExifOffset
其中59932,是一大串十六进制的字符，不知为啥。除了PIL之外，还有许多类库可供使用：
Media Metadata for Python
EXIF.py
Python Exif Parser
A Blogger's Exif Parser
pyexiv2
接着看EXIF.PY，使用方法非常简单：exif.py IMG_20121122_153514.jpg
EXIF ColorSpace (Short): sRGB
EXIF ComponentsConfiguration (Undefined): YCbCr
EXIF DateTimeDigitized (ASCII): 2012:11:22 15:35:14
EXIF DateTimeOriginal (ASCII): 2012:11:22 15:35:14
EXIF DigitalZoomRatio (Ratio): 1
EXIF ExifImageLength (Long): 2560
EXIF ExifImageWidth (Long): 1920
EXIF ExifVersion (Undefined): 0220
EXIF ExposureBiasValue (Signed Ratio): 0
EXIF ExposureMode (Short): Auto Exposure
EXIF ExposureProgram (Short): Portrait Mode
EXIF ExposureTime (Ratio): 1/256
EXIF FNumber (Ratio): 14/5
EXIF Flash (Short): Flash did not fire
EXIF FlashPixVersion (Undefined): 0100
EXIF FocalLength (Ratio): 35
EXIF ISOSpeedRatings (Short): 56
EXIF InteroperabilityOffset (Long): 4810
EXIF LightSource (Short): other light source
EXIF MeteringMode (Short): CenterWeightedAverage
EXIF Padding (Undefined): []
EXIF SceneCaptureType (Short): Portrait
EXIF WhiteBalance (Short): Auto
Image DateTime (ASCII): 2012:11:24 09:44:50
Image ExifOffset (Long): 2396
Image ImageDescription (ASCII):
Image Make (ASCII):
Image Model (ASCII):
Image Orientation (Short): Horizontal (normal)
Image Padding (Undefined): []
Image ResolutionUnit (Short): Pixels/Inch
Image Software (ASCII): Microsoft Windows Photo Viewer 6.1.7600.16385
Image XResolution (Ratio): 72
Image YCbCrPositioning (Short): Co-sited
Image YResolution (Ratio): 72
Thumbnail Compression (Short): JPEG (old-style)
Thumbnail JPEGInterchangeFormat (Long): 4970
Thumbnail JPEGInterchangeFormatLength (Long): 3883
Thumbnail Orientation (Short): Horizontal (normal)
Thumbnail ResolutionUnit (Short): Pixels/Inch
Thumbnail XResolution (Ratio): 72
Thumbnail YCbCrPositioning (Short): Co-sited
Thumbnail YResolution (Ratio): 72
至于Python Exif Parser，好像没更新很久了，使用方法也很类似：
import exif
photo_path = "somePathtoaphoto.jpg"
data = exif.parse(photo_path)
其他类库请自行研究。