delay load urllib

src/calibre/customize/builtins.py

@@ -1761,7 +1761,7 @@ if __name__ == '__main__':
 
         for x in ('lxml', 'calibre.ebooks.BeautifulSoup', 'uuid',
             'calibre.utils.terminal', 'calibre.utils.magick', 'PIL', 'Image',
-            'sqlite3', 'mechanize', 'httplib', 'xml', 'inspect'):
+            'sqlite3', 'mechanize', 'httplib', 'xml', 'inspect', 'urllib'):
             if x in sys.modules:
                 ret = 1
                 print (x, 'has been loaded by a plugin')

src/calibre/ebooks/conversion/plugins/html_input.py

@@ -10,7 +10,6 @@ __docformat__ = 'restructuredtext en'
 import re, tempfile, os
 from functools import partial
 from itertools import izip
-from urllib import quote
 
 from calibre.constants import islinux, isbsd
 from calibre.customize.conversion import (InputFormatPlugin,
@@ -223,6 +222,7 @@ class HTMLInput(InputFormatPlugin):
         return link, frag
 
     def resource_adder(self, link_, base=None):
+        from urllib import quote
         link, frag = self.link_to_local_path(link_, base=base)
         if link is None:
             return link_

src/calibre/ebooks/metadata/__init__.py

@@ -7,7 +7,6 @@ __docformat__ = 'restructuredtext en'
 Provides abstraction for metadata reading.writing from a variety of ebook formats.
 """
 import os, sys, re
-from urllib import unquote, quote
 from urlparse import urlparse
 
 from calibre import relpath, guess_type, remove_bracketed_text, prints
@@ -188,6 +187,7 @@ class Resource(object):
     '''
 
     def __init__(self, href_or_path, basedir=os.getcwdu(), is_path=True):
+        from urllib import unquote
         self._href = None
         self._basedir = basedir
         self.path = None
@@ -226,6 +226,7 @@ class Resource(object):
         `basedir`: If None, the basedir of this resource is used (see :method:`set_basedir`).
         If this resource has no basedir, then the current working directory is used as the basedir.
         '''
+        from urllib import quote
         if basedir is None:
             if self._basedir:
                 basedir = self._basedir

src/calibre/ebooks/metadata/sources/amazon.py

@@ -8,7 +8,6 @@ __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 import socket, time, re
-from urllib import urlencode
 from threading import Thread
 from Queue import Queue, Empty
 
@@ -637,6 +636,7 @@ class Amazon(Source):
 
     def create_query(self, log, title=None, authors=None, identifiers={},  # {{{
             domain=None):
+        from urllib import urlencode
         if domain is None:
             domain = self.domain
 

src/calibre/ebooks/metadata/sources/douban.py

@@ -8,7 +8,6 @@ __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>; 2011, Li Fanxi <lifan
 __docformat__ = 'restructuredtext en'
 
 import time
-from urllib import urlencode
 from functools import partial
 from Queue import Queue, Empty
 
@@ -172,6 +171,7 @@ class Douban(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}): # {{{
+        from urllib import urlencode
         SEARCH_URL = 'http://api.douban.com/book/subjects?'
         ISBN_URL = 'http://api.douban.com/book/subject/isbn/'
         SUBJECT_URL = 'http://api.douban.com/book/subject/'

src/calibre/ebooks/metadata/sources/google.py

@@ -8,7 +8,6 @@ __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 import time, hashlib
-from urllib import urlencode
 from functools import partial
 from Queue import Queue, Empty
 
@@ -179,6 +178,7 @@ class GoogleBooks(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}): # {{{
+        from urllib import urlencode
         BASE_URL = 'http://books.google.com/books/feeds/volumes?'
         isbn = check_isbn(identifiers.get('isbn', None))
         q = ''

src/calibre/ebooks/metadata/sources/isbndb.py

@@ -7,7 +7,6 @@ __license__   = 'GPL v3'
 __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from urllib import quote
 
 
 from calibre.ebooks.metadata import check_isbn
@@ -66,6 +65,7 @@ class ISBNDB(Source):
         return self.isbndb_key is not None
 
     def create_query(self, title=None, authors=None, identifiers={}): # {{{
+        from urllib import quote
         base_url = BASE_URL%self.isbndb_key
         isbn = check_isbn(identifiers.get('isbn', None))
         q = ''

src/calibre/ebooks/metadata/sources/ozon.py

@@ -6,7 +6,6 @@ __copyright__ = '2011, Roman Mukhin <ramses_ru at hotmail.com>'
 __docformat__ = 'restructuredtext en'
 
 import re
-from urllib import quote_plus
 from Queue import Queue, Empty
 
 from calibre import as_unicode
@@ -49,6 +48,7 @@ class Ozon(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}): # {{{
+        from urllib import quote_plus
         # div_book -> search only books, ebooks and audio books
         search_url = self.ozon_url + '/webservice/webservice.asmx/SearchWebService?searchContext=div_book&searchText='