diff --git a/IPython/external/qt_loaders.py b/IPython/external/qt_loaders.py
index 6041e23..975855c 100644
--- a/IPython/external/qt_loaders.py
+++ b/IPython/external/qt_loaders.py
@@ -75,7 +75,7 @@ sys.meta_path.insert(0, ID)
 
 def commit_api(api):
     """Commit to a particular API, and trigger ImportErrors on subsequent
-       dangerous imports"""
+    dangerous imports"""
     modules = set(api_to_module.values())
 
     modules.remove(api_to_module[api])
@@ -115,15 +115,15 @@ def loaded_api():
 def has_binding(api):
     """Safely check for PyQt4/5, PySide or PySide2, without importing submodules
 
-        Parameters
-        ----------
-        api : str [ 'pyqtv1' | 'pyqt' | 'pyqt5' | 'pyside' | 'pyside2' | 'pyqtdefault']
-             Which module to check for
+    Parameters
+    ----------
+    api : str [ 'pyqtv1' | 'pyqt' | 'pyqt5' | 'pyside' | 'pyside2' | 'pyqtdefault']
+        Which module to check for
 
-        Returns
-        -------
-        True if the relevant module appears to be importable
-     """
+    Returns
+    -------
+    True if the relevant module appears to be importable
+    """
     module_name = api_to_module[api]
     from importlib.util import find_spec
 
@@ -193,9 +193,8 @@ def import_pyqt4(version=2):
     Parameters
     ----------
     version : 1, 2, or None
-      Which QString/QVariant API to use. Set to None to use the system
-      default
-
+        Which QString/QVariant API to use. Set to None to use the system
+        default
     ImportErrors raised within this function are non-recoverable
     """
     # The new-style string API (version=2) automatically
@@ -319,13 +318,12 @@ def load_qt(api_options):
 
     Parameters
     ----------
-    api_options: List of strings
+    api_options : List of strings
         The order of APIs to try. Valid items are 'pyside', 'pyside2',
         'pyqt', 'pyqt5', 'pyqtv1' and 'pyqtdefault'
 
     Returns
     -------
-
     A tuple of QtCore, QtGui, QtSvg, QT_API
     The first three are the Qt modules. The last is the
     string indicating which module was loaded.
diff --git a/IPython/lib/backgroundjobs.py b/IPython/lib/backgroundjobs.py
index 588c15b..e7ad51e 100644
--- a/IPython/lib/backgroundjobs.py
+++ b/IPython/lib/backgroundjobs.py
@@ -116,7 +116,7 @@ class BackgroundJobManager(object):
         The given expression is passed to eval(), along with the optional
         global/local dicts provided.  If no dicts are given, they are
         extracted automatically from the caller's frame.
-        
+
         A Python statement is NOT a valid eval() expression.  Basically, you
         can only use as an eval() argument something which can go on the right
         of an '=' sign and be assigned to a variable.
diff --git a/IPython/lib/demo.py b/IPython/lib/demo.py
index 8367a6f..14af516 100644
--- a/IPython/lib/demo.py
+++ b/IPython/lib/demo.py
@@ -239,7 +239,7 @@ class Demo(object):
             terminal16m
 
           - style('default'): a string of pygments style name to be used.
-          """
+        """
         if hasattr(src, "read"):
              # It seems to be a file or a file-like object
             self.fname = "from a file-like object"
diff --git a/IPython/lib/display.py b/IPython/lib/display.py
index 57ae8de..52060da 100644
--- a/IPython/lib/display.py
+++ b/IPython/lib/display.py
@@ -517,20 +517,20 @@ class FileLinks(FileLink):
                                fp_cleaner=None):
         """ generate built-in formatter function
 
-           this is used to define both the notebook and terminal built-in
-            formatters as they only differ by some wrapper text for each entry
-
-           dirname_output_format: string to use for formatting directory
-            names, dirname will be substituted for a single "%s" which
-            must appear in this string
-           fname_output_format: string to use for formatting file names,
-            if a single "%s" appears in the string, fname will be substituted
-            if two "%s" appear in the string, the path to fname will be
-             substituted for the first and fname will be substituted for the
-             second
-           fp_format: string to use for formatting filepaths, must contain
-            exactly two "%s" and the dirname will be substituted for the first
-            and fname will be substituted for the second
+        this is used to define both the notebook and terminal built-in
+         formatters as they only differ by some wrapper text for each entry
+
+        dirname_output_format: string to use for formatting directory
+         names, dirname will be substituted for a single "%s" which
+         must appear in this string
+        fname_output_format: string to use for formatting file names,
+         if a single "%s" appears in the string, fname will be substituted
+         if two "%s" appear in the string, the path to fname will be
+          substituted for the first and fname will be substituted for the
+          second
+        fp_format: string to use for formatting filepaths, must contain
+         exactly two "%s" and the dirname will be substituted for the first
+         and fname will be substituted for the second
         """
         def f(dirname, fnames, included_suffixes=None):
             result = []
diff --git a/IPython/lib/latextools.py b/IPython/lib/latextools.py
index a7bb08d..27aeef5 100644
--- a/IPython/lib/latextools.py
+++ b/IPython/lib/latextools.py
@@ -77,7 +77,6 @@ def latex_to_png(s, encode=False, backend=None, wrap=False, color='Black',
         format, e.g. '#AA20FA'.
     scale : float
         Scale factor for the resulting PNG.
-
     None is returned when the backend cannot be used.
 
     """