Python exam help
From ICO wiki
To get GPS coordinates and image orientation:
from exifread import process_file
def degrees(j):
return j.values[0].num + (j.values[1].num + j.values[2].den * 1.0 / j.values[2].num) / 60.0
tags = process_file(open("/home/sheela/Documents/Python/pics/IMG_20131019_201706.jpg"))
print tags
lat, lng = tags.get("GPS GPSLatitude"), tags.get("GPS GPSLongitude")
if lat and lng:
print "%.4f,%.4f" % (degrees(lat), degrees(lng)),
# Parse datetime of the photo
timestamp = tags.get("EXIF DateTimeOriginal")
if timestamp:
print timestamp.values,
# Parse image orientation
orientation = tags.get("Image Orientation")
if orientation:
j, = orientation.values
if j == 6:
print "rotated 270 degrees",
elif j == 8:
print "rotated 90 degrees",
elif j == 3:
print "rotated 180 degrees",
print
This code is to remove the exif data - metadata
import Image
from exifread import process_file
image_file = open('/home/sheela/Documents/Python/pics/IMG_20150619_120040.jpg')
image = Image.open(image_file)
# next 3 lines strip exif
data = list(image.getdata())
image_without_exif = Image.new(image.mode, image.size)
image_without_exif.putdata(data)
image_without_exif.save('without_exif_data.jpeg')
This code is to rotate the picture (which do not have metadata) to original view
import Image
orig = Image.open("original.jpg")
rotated = orig.transpose(Image.ROTATE_90) # This happens only in the RAM!
rotated.save("rotated.jpg")
import Image
from exifread import process_file
#input_path, output_path = sys.argv[1:]
image_file = open('/home/sheela/Documents/Python/pics/IMG_20131019_201706.jpg')
image = Image.open(image_file)
# next 3 lines strip exif
data = list(image.getdata())
image_without_exif = Image.new(image.mode, image.size)
image_without_exif.putdata(data)
image_without_exif.save('without_exif_data.jpeg')
im = Image.open("/home/sheela/Documents/Python/pics/IMG_20131019_201706.jpg")
rotated = im.transpose(Image.ROTATE_90)
im.save("rotated.jpg")
#orig = Image.open(output_path)
#rotated = orig.transpose(Image.ROTATE_90) # This happens only in the RAM!
#rotated.save(output_path)
dexif.py Lauri's code
import codecs, os, sys
from exifread import process_file
from PIL import Image
from jinja2 import Template
input_path, output_path = sys.argv[1:]
if not os.path.exists(output_path):
os.makedirs(os.path.join(output_path, "thumbnails"))
template = Template(codecs.open("gallery.html", "r", encoding="utf-8").read())
with codecs.open("/tmp/bulid/index.html", "w", encoding="utf-8") as fh:
fh.write(template.render(files = os.listdir(input_path)))
for filename in os.listdir(input_path):
if not filename.endswith(".jpg"): continue
print filename
tags = EXIF.process_file(open(os.path.join(input_path, filename)))
im = Image.open(os.path.join(input_path, filname))
rotated = im # Not roated at all
orientation = tags.get("Image orientation") # paese image orientation
if orientation:
j, = orientation.values
if j == 6:
rotated = im.transpose(Image.ROTATE_270)
elif j == 8:
rotated = im.transpose(Image.ROTATE_90)
elif j == 3:
rotated = im.transpose(Image.ROTATE_180)
rotated.save(os.path.join(output_path, filename))
rotated.thumbnail((192,192), Image.ANTIALIAS)
rotated.save(os.path.join(output_path, "thumbnails", filename))
Artur code A.py
import Image
import sys
from exifread import process_file
input_path, output_path = sys.argv[1:]
image_file = open(input_path)
image = Image.open(image_file)
data = list(image.getdata())
no_exif = Image.new(image.mode, image.size)
no_exif.putdata(data)
no_exif.save(output_path)
orig = Image.open(output_path)
rotated = orig.transpose(Image.ROTATE_90) # This happens only in the RAM!
rotated.save(output_path)
To get image thumbnail
<<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Images</title>
<style>
body {
background-color: #444;
}
.thumbnail {
position: relative;
display: inline;
margin: 1em;
padding: 0;
width: 192;
height: 192;
box-shadow: 0px 0px 10px rgba(0,0,0,1);
}
</style>
</head>
<body>
{% for filename in files %
<a href= "{{filename}}">
<img class="thumbnail" src="thumbnails/{{filename}}"/>
</a>
{% endfor %}
</body>
</html>
Final result all in one file
# I need to mention my path like this - python dexif2.py /home/sheela/Documents/Python/pics /home/sheela/Documents/Python
import codecs, os,sys
from exifread import process_file
from PIL import Image
from jinja2 import Template
# Grab arguments specified on the command line after: python paranoia.py <input_dir> <output_dir>
input_directory, output_directory = sys.argv[1:]
# Create output directories if necessary
if not os.path.exists(output_directory):
os.makedirs(os.path.join(output_directory, "thumbnails"))
HEADER = """<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<style>
body { background-color: #444; }
img.thumb { position: relative; display: inline; margin: 1em;
padding: 0; width: 192; height: 192;
box-shadow: 0px 0px 10px rgba(0,0,0,1); }
</style>
</head>
<body>
"""
# Open index.html in output diretory and write it line by line
with open(os.path.join(output_directory, "index.html"), "w") as fh:
fh.write(HEADER)
for filename in os.listdir(input_directory):
# Read EXIF tags
tags = process_file(open(os.path.join(input_directory, filename)))
# Read image data
original = Image.open(os.path.join(input_directory, filename))
# Rotate as necessary
rotated = original # Not rotated at all
orientation = tags.get("Image Orientation") # Parse image orientation
if orientation:
j, = orientation.values
if j == 6:
rotated = original.transpose(Image.ROTATE_270)
elif j == 8:
rotated = original.transpose(Image.ROTATE_90)
elif j == 3:
rotated = original.transpose(Image.ROTATE_180)
rotated.save(os.path.join(output_directory, filename))
# Save thumbnail
rotated.thumbnail((192,192), Image.ANTIALIAS)
rotated.save(os.path.join(output_directory, "thumbnails", filename))
fh.write(""" <a href="%s">""" % filename)
fh.write("""<img class="thumb" src="thumbnails/%s"/>""" % filename)
fh.write("""</a>\n""")
fh.write(" </body>\n")
fh.write("</html>\n")
Exam answer
import shutil, sys, magic, os
from mutagen.easyid3 import EasyID3
from mutagen.id3 import ID3NoHeaderError
db = magic.open(magic.MAGIC_MIME_TYPE)
db.load()
try:
input_directory, output_directory = sys.argv[1:3]
except ValueError:
print "Not enough arguments!"
sys.exit(255)
for filename in os.listdir(input_directory):
path = os.path.join(input_directory, filename)
if db.file(path) not in ("application/octet-stream", "audio/mpeg"):
continue
try:
tags = EasyID3(path)
except ID3NoHeaderError:
continue
artist, = tags.get("artist") # artist = tags.get("artist")[0]
album, = tags.get("album")
title, = tags.get("title")
year, = tags.get("date")
tracknumber, = tags.get("tracknumber")
if "/" in tracknumber:
tracknumber, _ = tracknumber.split("/")
directory_name = "%s - %s (%s)" % (artist, album, year)
target_name = "%02d. %s - %s.mp3" % (int(tracknumber), artist, title)
if not os.path.exists(os.path.join(output_directory, directory_name)):
os.makedirs(os.path.join(output_directory, directory_name))
shutil.copy(path, os.path.join(output_directory, directory_name, target_name))
print "Move from:", filename, "to:", os.path.join(directory_name, target_name)
