DOC: fix some doc build errors

- wrap docstring -> raw indication needed for newlines characters
- using anonymous hyperlinks (two underscores instead of one) for preventing warning on same names
- some missing imports and whitespace

Author: jorisvandenbossche

doc/source/basics.rst

@@ -236,7 +236,7 @@ see :ref:`here<indexing.boolean>`
 Boolean Reductions
 ~~~~~~~~~~~~~~~~~~
 
-    You can apply the reductions: :attr:`~DataFrame.empty`, :meth:`~DataFrame.any`,
+You can apply the reductions: :attr:`~DataFrame.empty`, :meth:`~DataFrame.any`,
 :meth:`~DataFrame.all`, and :meth:`~DataFrame.bool` to provide a
 way to summarize a boolean result.
 

doc/source/contributing.rst

@@ -113,10 +113,10 @@ This creates the directory `pandas-yourname` and connects your repository to
 the upstream (main project) *pandas* repository.
 
 The testing suite will run automatically on Travis-CI once your Pull Request is
-submitted.  However, if you wish to run the test suite on a branch prior to 
+submitted.  However, if you wish to run the test suite on a branch prior to
 submitting the Pull Request, then Travis-CI needs to be hooked up to your
 GitHub repository.  Instructions are for doing so are `here
-<http://about.travis-ci.org/docs/user/getting-started/>`_.
+<http://about.travis-ci.org/docs/user/getting-started/>`__.
 
 Creating a Branch
 -----------------
@@ -219,7 +219,7 @@ To return to you home root environment:
       deactivate
 
 See the full ``conda`` docs `here
-<http://conda.pydata.org/docs>`_.
+<http://conda.pydata.org/docs>`__.
 
 At this point you can easily do an *in-place* install, as detailed in the next section.
 
@@ -372,7 +372,7 @@ If you want to do a full clean build, do::
 Starting with 0.13.1 you can tell ``make.py`` to compile only a single section
 of the docs, greatly reducing the turn-around time for checking your changes.
 You will be prompted to delete `.rst` files that aren't required.  This is okay
-since the prior version can be checked out from git, but make sure to 
+since the prior version can be checked out from git, but make sure to
 not commit the file deletions.
 
 ::
@@ -401,7 +401,7 @@ Built Master Branch Documentation
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 When pull-requests are merged into the pandas *master* branch, the main parts of the documentation are
-also built by Travis-CI. These docs are then hosted `here <http://pandas-docs.github.io/pandas-docs-travis>`_.
+also built by Travis-CI. These docs are then hosted `here <http://pandas-docs.github.io/pandas-docs-travis>`__.
 
 Contributing to the code base
 =============================

doc/source/install.rst

@@ -35,7 +35,7 @@ pandas at all.
 Simply create an account, and have access to pandas from within your brower via
 an `IPython Notebook <http://ipython.org/notebook.html>`__ in a few minutes.
 
-.. _install.anaconda
+.. _install.anaconda:
 
 Installing pandas with Anaconda
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -68,7 +68,7 @@ admin rights to install it, it will install in the user's home directory, and
 this also makes it trivial to delete Anaconda at a later date (just delete
 that folder).
 
-.. _install.miniconda
+.. _install.miniconda:
 
 Installing pandas with Miniconda
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

doc/source/visualization.rst

@@ -220,8 +220,8 @@ Histogram can be drawn specifying ``kind='hist'``.
 
 .. ipython:: python
 
-   df4 = pd.DataFrame({'a': randn(1000) + 1, 'b': randn(1000),
-                       'c': randn(1000) - 1}, columns=['a', 'b', 'c'])
+   df4 = pd.DataFrame({'a': np.random.randn(1000) + 1, 'b': np.random.randn(1000),
+                       'c': np.random.randn(1000) - 1}, columns=['a', 'b', 'c'])
 
    plt.figure();
 

pandas/core/strings.py

@@ -813,7 +813,7 @@ def str_strip(arr, to_strip=None, side='both'):
 
 
 def str_wrap(arr, width, **kwargs):
-    """
+    r"""
     Wrap long strings in the Series/Index to be formatted in
     paragraphs with length less than a given width.