bookData.py

   1 try:
   2         # For Python 3.0 and later
   3             from urllib.request import urlopen,URLError
   4 except ImportError:
   5         # Fall back to Python 2's urllib2
   6             from urllib2 import urlopen,URLError
   7 from json import loads,dumps
   8 import sys
   9
  10 """ Library Book Type Description:
  11 The book is a dictionary of the form { string : a, ... }
  12
  13 Keys:
  14   required: (ideally)
  15     title - Book/Article title
  16     publisher - string containing semi-colon separated list eg. "UW Press; CSC, inc."
  17     authors - as above. each name is of the form "First Initials. Last" eg. "Calum T. Dalek; Conan T.B. Ladan"
  18   optional:
  19     subtitle - string
  20     edition - integer
  21     isbn - integer (it's preferred to use the isbn-13 rather than isbn-10)
  22     lccn - integer: library of congress catalogue number
  23     publish date - string of date (to make things easier to code/catalogue (won't be stored)
  24     publish year - int (this kind of thing will have to be confirmed by cataloguer)
  25     publish month - int
  26     publish location - like publisher
  27
  28     pages - integer - just the number of pages
  29     pagination - string eg. "xviii, 1327-1850"
  30     weight - string (purely for interest's sake eg. "3lb." or "3 pounds"
  31     categories - list of strings?
  32 """
  33
  34
  35 # look up data from openlibrary.org using isbn
  36 def openLibrary_isbn(ISBN):
  37     isbn = str(ISBN)
  38     try:
  39         jsondata = urlopen("http://openlibrary.org/api/books?format=json&jscmd=data&bibkeys=ISBN:"+isbn, timeout=3)
  40     except URLError:
  41         return {}
  42     openBook = loads(jsondata.read().decode('utf-8'))
  43     if "ISBN:"+isbn not in openBook:
  44         return {'isbn':isbn,'title':'Book not found'}
  45     openBook = openBook["ISBN:"+isbn]
  46     # create my custom dict for books with the info we want.
  47     book = dict({"isbn" : isbn})
  48     book["title"]=openBook["title"]
  49     book["authors"]=""
  50     if "authors" in openBook:
  51         for v in openBook["authors"]:
  52             book['authors'] += "; " + v['name']
  53         book['authors'] = book['authors'][2:]
  54     book["publisher"]=""
  55     if "publishers" in openBook:
  56         for v in openBook["publishers"]:
  57             book["publisher"] += "; " + v['name']
  58         book['publisher'] = book['publisher'][2:]
  59     if "publish_places" in openBook:
  60         book["publish location"]=""
  61         for v in openBook["publish_places"]:
  62             book["publish location"] += "; " + v['name']
  63         book['publish location'] = book['publish location'][2:]
  64
  65     # for lccn, there maybe be multiple values in the query. I'm just taking the first, but the full list may be useful
  66     if "lccn" in openBook['identifiers']:
  67         book["lccn"]=int(openBook['identifiers']['lccn'][0])
  68     if "publish_date" in openBook:
  69         book['publish date']=openBook['publish_date']
  70         #code to pull out year and month (hopefully)
  71     if "number_of_pages" in openBook:
  72         book["pages"]=openBook["number_of_pages"]
  73     if "pagination" in openBook:
  74         book["pagination"]=openBook["pagination"]
  75     if "weight" in openBook:
  76         book["weight"]=openBook["weight"]
  77     if "subtitle" in openBook:
  78         book["subtitle"]=openBook["subtitle"]
  79     return book
  80
  81 # look up data from openlibrary.org using lccn
  82 def openLibrary_lccn(LCCN):
  83     lccn = str(LCCN)
  84     try:
  85         jsondata = urlopen("http://openlibrary.org/api/books?format=json&jscmd=data&bibkeys=lccn:"+lccn, timeout=3)
  86     except URLError:
  87         return {}
  88     openBook = loads(jsondata.read().decode('utf-8'))
  89     if "lccn:"+lccn not in openBook:
  90         return {'lccn':lccn,'title':'Book not found'}
  91     openBook = openBook["lccn:"+lccn]
  92     # create my custom dict for books with the info we want.
  93     book = {"lccn" : lccn}
  94     book["title"]=openBook["title"]
  95     book["authors"]=""
  96     if "authors" in openBook:
  97         for v in openBook["authors"]:
  98             book['authors'] += "; " + v['name']
  99         book['authors'] = book['authors'][2:]
 100     book["publisher"]=""
 101     if "publishers" in openBook:
 102         for v in openBook["publishers"]:
 103             book["publisher"] += "; " + v['name']
 104         book['publisher'] = book['publisher'][2:]
 105     if "publish_places" in openBook:
 106         book["publish location"]=""
 107         for v in openBook["publish_places"]:
 108             book["publish location"] += "; " + v['name']
 109         book['publish location'] = book['publish location'][2:]
 110
 111     # for isbn, there maybe be multiple values in the query. I'm just taking the first, but the full list may be useful
 112     # There are also ISBN's that have non-number values :(
 113     if "isbn_10" in openBook['identifiers']:
 114         book["isbn"]=openBook['identifiers']['isbn_10'][0]
 115     if "isbn_13" in openBook['identifiers']:
 116         book["isbn"]=openBook['identifiers']['isbn_13'][0]
 117     if "publish_date" in openBook:
 118         book['publish date']=openBook['publish_date']
 119         #code to pull out year and month (hopefully)
 120     if "number_of_pages" in openBook:
 121         book["pages"]=openBook["number_of_pages"]
 122     if "pagination" in openBook:
 123         book["pagination"]=openBook["pagination"]
 124     if "weight" in openBook:
 125         book["weight"]=openBook["weight"]
 126     if "subtitle" in openBook:
 127         book["subtitle"]=openBook["subtitle"]
 128     return book
 129