Replace has_key with in in magic_run and some pep-8 fixes.

IPython/core/magic.py

@@ -1642,7 +1642,7 b' Currently the magic system has the following functions:\\n"""'
             return
 
         # Control the response to exit() calls made by the script being run
-        exit_ignore = opts.has_key('e')
+        exit_ignore = 'e' in opts
 
         # Make sure that the running script gets a proper sys.argv as if it
         # were run from a system shell.
@@ -1653,7 +1653,7 b' Currently the magic system has the following functions:\\n"""'
 
         sys.argv = [filename]+ args  # put in the proper filename
 
-        if opts.has_key('i'):
+        if 'i' in opts:
             # Run in user's interactive namespace
             prog_ns = self.shell.user_ns
             __name__save = self.shell.user_ns['__name__']
@@ -1661,7 +1661,7 b' Currently the magic system has the following functions:\\n"""'
             main_mod = self.shell.new_main_mod(prog_ns)
         else:
             # Run in a fresh, empty namespace
-            if opts.has_key('n'):
+            if 'n' in opts:
                 name = os.path.splitext(os.path.basename(filename))[0]
             else:
                 name = '__main__'
@@ -1690,10 +1690,10 b' Currently the magic system has the following functions:\\n"""'
         try:
             stats = None
             with self.readline_no_record:
-                if opts.has_key('p'):
+                if 'p' in opts:
                     stats = self.magic_prun('',0,opts,arg_lst,prog_ns)
                 else:
-                    if opts.has_key('d'):
+                    if 'd' in opts:
                         deb = debugger.Pdb(self.shell.colors)
                         # reset Breakpoint state, which is moronically kept
                         # in a class
@@ -1733,7 +1733,7 b' Currently the magic system has the following functions:\\n"""'
                     else:
                         if runner is None:
                             runner = self.shell.safe_execfile
-                        if opts.has_key('t'):
+                        if 't' in opts:
                             # timed execution
                             try:
                                 nruns = int(opts['N'][0])
@@ -1774,7 +1774,7 b' Currently the magic system has the following functions:\\n"""'
                             # regular execution
                             runner(filename,prog_ns,prog_ns,exit_ignore=exit_ignore)
 
-                if opts.has_key('i'):
+                if 'i' in opts:
                     self.shell.user_ns['__name__'] = __name__save
                 else:
                     # The shell MUST hold a reference to prog_ns so after %run