delay load utils.zipfile

src/calibre/customize/builtins.py

@@ -1762,7 +1762,9 @@ if __name__ == '__main__':
         for x in ('lxml', 'calibre.ebooks.BeautifulSoup', 'uuid',
             'calibre.utils.terminal', 'calibre.utils.magick', 'PIL', 'Image',
             'sqlite3', 'mechanize', 'httplib', 'xml', 'inspect', 'urllib',
-            'calibre.utils.date', 'calibre.utils.config', 'platform'):
+            'calibre.utils.date', 'calibre.utils.config', 'platform',
+            'calibre.utils.zipfile',
+        ):
             if x in sys.modules:
                 ret = 1
                 print (x, 'has been loaded by a plugin')

src/calibre/devices/apple/driver.py

@@ -18,7 +18,6 @@ from calibre.ebooks.metadata import (author_to_author_sort, authors_to_string,
     MetaInformation, title_sort)
 from calibre.ebooks.metadata.book.base import Metadata
 from calibre.utils.config_base import config_dir, prefs
-from calibre.utils.zipfile import ZipFile
 
 DEBUG = CALIBRE_DEBUG
 
@@ -862,6 +861,7 @@ class ITUNES(DriverBase):
         Note that most of the initialization is necessarily performed in can_handle(), as
         we need to talk to iTunes to discover if there's a connected iPod
         '''
+        from calibre.utils.zipfile import ZipFile
         if self.iTunes is None:
             raise OpenFeedback(self.ITUNES_SANDBOX_LOCKOUT_MESSAGE)
 
@@ -933,6 +933,7 @@ class ITUNES(DriverBase):
         NB: This will not find books that were added by a different installation of calibre
             as uuids are different
         '''
+        from calibre.utils.zipfile import ZipFile
         if DEBUG:
             logger().info("%s.remove_books_from_metadata()" % self.__class__.__name__)
         for path in paths:
@@ -1432,6 +1433,7 @@ class ITUNES(DriverBase):
         as of iTunes 9.2, iBooks 1.1, can't set artwork for PDF files via automation
         '''
         from PIL import Image as PILImage
+        from calibre.utils.zipfile import ZipFile
 
         if DEBUG:
             logger().info(" %s._cover_to_thumb()" % self.__class__.__name__)
@@ -1765,6 +1767,7 @@ class ITUNES(DriverBase):
         '''
         '''
         from calibre.ebooks.BeautifulSoup import BeautifulSoup
+        from calibre.utils.zipfile import ZipFile
 
         logger().info(" %s.__get_epub_metadata()" % self.__class__.__name__)
         title = None
@@ -2018,6 +2021,7 @@ class ITUNES(DriverBase):
         as of iTunes 9.2, iBooks 1.1, can't set artwork for PDF files via automation
         '''
         from PIL import Image as PILImage
+        from calibre.utils.zipfile import ZipFile
 
         if not self.settings().extra_customization[self.CACHE_COVERS]:
             thumb_data = None
@@ -2130,6 +2134,7 @@ class ITUNES(DriverBase):
         '''
         Calculate the exploded size of file
         '''
+        from calibre.utils.zipfile import ZipFile
         exploded_file_size = compressed_size
         format = file.rpartition('.')[2].lower()
         if format == 'epub':
@@ -2784,6 +2789,7 @@ class ITUNES(DriverBase):
         from calibre.utils.date import parse_date, now
         from calibre.ebooks.metadata.epub import set_metadata
         from lxml import etree
+        from calibre.utils.zipfile import ZipFile
 
         if DEBUG:
             logger().info(" %s._update_epub_metadata()" % self.__class__.__name__)
@@ -3425,6 +3431,7 @@ class ITUNES_ASYNC(ITUNES):
         Note that most of the initialization is necessarily performed in can_handle(), as
         we need to talk to iTunes to discover if there's a connected iPod
         '''
+        from calibre.utils.zipfile import ZipFile
         if self.iTunes is None:
             raise OpenFeedback(self.ITUNES_SANDBOX_LOCKOUT_MESSAGE)
 

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

@@ -10,7 +10,6 @@ import shutil
 
 from calibre.customize.conversion import InputFormatPlugin
 from calibre.ptempfile import TemporaryDirectory
-from calibre.utils.zipfile import ZipFile
 
 class PMLInput(InputFormatPlugin):
 
@@ -86,6 +85,7 @@ class PMLInput(InputFormatPlugin):
                 accelerators):
         from calibre.ebooks.metadata.toc import TOC
         from calibre.ebooks.metadata.opf2 import OPFCreator
+        from calibre.utils.zipfile import ZipFile
 
         self.options = options
         self.log = log

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

@@ -389,9 +389,10 @@ def _get_affiliateId(): # {{{
     return aff_id
 # }}}
 
-# for now only RUS ISBN are supported
-#http://ru.wikipedia.org/wiki/ISBN_российских_издательств
-isbn_pat = re.compile(r"""
+def _format_isbn(log, isbn):  # {{{
+    # for now only RUS ISBN are supported
+    #http://ru.wikipedia.org/wiki/ISBN_российских_издательств
+    isbn_pat = re.compile(r"""
         ^
         (\d{3})?            # match GS1 Prefix for ISBN13
         (5)                 # group identifier for rRussian-speaking countries
@@ -413,9 +414,9 @@ isbn_pat = re.compile(r"""
         (\d+)               # Title
         ([\dX])             # Check digit
         $
-""", re.VERBOSE)
+    """, re.VERBOSE)
+
 
-def _format_isbn(log, isbn):  # {{{
     res = check_isbn(isbn)
     if res:
         m = isbn_pat.match(res)