Fix docs build

README.md

@@ -1,7 +1,7 @@
 OCRmyPDF
 ========
 
-[![Travis build status][travis]](https://travis-ci.org/jbarlow83/OCRmyPDF) [![PyPI version][pypi]](https://pypi.org/project/ocrmypdf/) ![Homebrew version][homebrew]
+[![Travis build status][travis]](https://travis-ci.org/jbarlow83/OCRmyPDF) [![PyPI version][pypi]](https://pypi.org/project/ocrmypdf/) ![Homebrew version][homebrew] ![ReadTheDocs][docs]
 
 [travis]: https://travis-ci.org/jbarlow83/OCRmyPDF.svg?branch=master "Travis build status"
 
@@ -9,6 +9,8 @@ OCRmyPDF
 
 [homebrew]: https://img.shields.io/homebrew/v/ocrmypdf.svg "Homebrew version"
 
+[docs]: https://readthedocs.org/projects/ocrmypdf/badge/?version=latest "RTD"
+
 OCRmyPDF adds an OCR text layer to scanned PDF files, allowing them to be searched or copy-pasted.
 
 ```bash

docs/conf.py

@@ -74,7 +74,7 @@ if on_rtd:
         def __getattr__(cls, name):
             return MagicMock()
 
-    MOCK_MODULES = ['pikepdf', 'libxmp', 'libxmp.utils']
+    MOCK_MODULES = ['pikepdf', 'libxmp', 'libxmp.utils', 'ocrmypdf.leptonica']
     sys.modules.update((mod_name, Mock()) for mod_name in MOCK_MODULES)
 
 

src/ocrmypdf/leptonica.py

@@ -36,12 +36,12 @@ from .helpers import fspath
 
 # pylint: disable=protected-access
 
-lept = ffi.dlopen(find_library('lept'))
-
 logger = logging.getLogger(__name__)
 
+lept = ffi.dlopen(find_library('lept'))
 lept.setMsgSeverity(lept.L_SEVERITY_WARNING)
 
+
 def stderr(*objs):
     """Shorthand print to stderr."""
     print("leptonica.py:", *objs, file=sys.stderr)