remove dict() function call and replace it with dict literal - {}

IPython/core/interactiveshell.py

@@ -1139,7 +1139,7 b' class InteractiveShell(SingletonConfigurable):'
 
         # For more details:
         # http://mail.python.org/pipermail/python-dev/2001-April/014068.html
-        ns = dict()
+        ns = {}
         
         # make global variables for user access to the histories
         ns['_ih'] = self.history_manager.input_hist_parsed
@@ -1367,7 +1367,7 b' class InteractiveShell(SingletonConfigurable):'
         if not oname.startswith(ESC_MAGIC) and \
             not oname.startswith(ESC_MAGIC2) and \
             not py3compat.isidentifier(oname, dotted=True):
-            return dict(found=False)
+            return {'found': False}
 
         if namespaces is None:
             # Namespaces to search in:

IPython/core/pylabtools.py

@@ -109,13 +109,13 b" def print_figure(fig, fmt='png', bbox_inches='tight', **kwargs):"
         fmt = 'png'
     
     # build keyword args
-    kw = dict(
-        format=fmt,
-        facecolor=fig.get_facecolor(),
-        edgecolor=fig.get_edgecolor(),
-        dpi=dpi,
-        bbox_inches=bbox_inches,
-    )
+    kw = {
+        "format":fmt,
+        "facecolor":fig.get_facecolor(),
+        "edgecolor":fig.get_edgecolor(),
+        "dpi":dpi,
+        "bbox_inches":bbox_inches,
+    }
     # **kwargs get higher priority
     kw.update(kwargs)
     
@@ -134,7 +134,7 b' def retina_figure(fig, **kwargs):'
     if pngdata is None:
         return
     w, h = _pngxy(pngdata)
-    metadata = dict(width=w//2, height=h//2)
+    metadata = {"width": w//2, "height":h//2}
     return pngdata, metadata
 
 # We need a little factory function here to create the closure where
@@ -383,7 +383,7 b' def configure_inline_support(shell, backend):'
         shell.events.register('post_execute', flush_figures)
 
         # Save rcParams that will be overwrittern
-        shell._saved_rcParams = dict()
+        shell._saved_rcParams = {}
         for k in cfg.rc:
             shell._saved_rcParams[k] = matplotlib.rcParams[k]
         # load inline_rc

IPython/sphinxext/ipython_directive.py

@@ -1162,7 +1162,7 b' array([[ inf, nan, 2., 3.],'
 
     #ipython_directive.DEBUG = True  # dbg
     #options = dict(suppress=True)  # dbg
-    options = dict()
+    options = {}
     for example in examples:
         content = example.split('\n')
         IPythonDirective('debug', arguments=None, options=options,

docs/autogen_shortcuts.py

@@ -39,7 +39,7 b' def multi_filter_str(flt):'
     yield name(flt)
 
 
-log_filters = dict(_AndList='And', _OrList='Or')
+log_filters = {'_AndList': 'And', '_OrList': 'Or'}
 log_invert =  {'_Invert'}
 
 kbm = KeyBindingManager.for_prompt()
@@ -53,8 +53,8 b' if common_docs:'
 
 dummy_docs = list(set(dummy_docs))
 
-single_filter = dict()
-multi_filter = dict()
+single_filter = {}
+multi_filter =  {}
 for kb in ipy_bindings:
     doc = kb.handler.__doc__
     if not doc or doc in dummy_docs: