convert backtick to repr

IPython/core/debugger.py

@@ -455,7 +455,7 b' class Pdb(OldPdb):'
                 else:
                     first = max(1, int(x) - 5)
             except:
-                print '*** Error in argument:', `arg`
+                print '*** Error in argument:', repr(arg)
                 return
         elif self.lineno is None:
             first = max(1, self.curframe.f_lineno - 5)

IPython/core/displayhook.py

@@ -188,7 +188,7 b' class DisplayHook(Configurable):'
         if result is not self.shell.user_ns['_oh']:
             if len(self.shell.user_ns['_oh']) >= self.cache_size and self.do_full_cache:
                 warn('Output cache limit (currently '+
-                      `self.cache_size`+' entries) hit.\n'
+                      repr(self.cache_size)+' entries) hit.\n'
                      'Flushing cache and resetting history counter...\n'
                      'The only history variables available will be _,__,___ and _1\n'
                      'with the current result.')
@@ -208,7 +208,7 b' class DisplayHook(Configurable):'
             # hackish access to top-level  namespace to create _1,_2... dynamically
             to_main = {}
             if self.do_full_cache:
-                new_result = '_'+`self.prompt_count`
+                new_result = '_'+repr(self.prompt_count)
                 to_main[new_result] = result
                 self.shell.push(to_main, interactive=False)
                 self.shell.user_ns['_oh'][self.prompt_count] = result
@@ -248,7 +248,7 b' class DisplayHook(Configurable):'
         # delete auto-generated vars from global namespace
 
         for n in range(1,self.prompt_count + 1):
-            key = '_'+`n`
+            key = '_'+repr(n)
             try:
                 del self.shell.user_ns[key]
             except: pass

IPython/core/logger.py

@@ -117,7 +117,7 b' class Logger(object):'
                     for f in old:
                         root, ext = os.path.splitext(f)
                         num = int(ext[1:-1])+1
-                        os.rename(f, root+'.'+`num`.zfill(3)+'~')
+                        os.rename(f, root+'.'+repr(num).zfill(3)+'~')
                 os.rename(self.logfname, self.logfname+'.001~')
             self.logfile = io.open(self.logfname, 'w', encoding='utf-8')
 

IPython/core/magics/execution.py

@@ -254,14 +254,14 b' python-profiler package from non-free.""")'
             dump_file = unquote_filename(dump_file)
             prof.dump_stats(dump_file)
             print '\n*** Profile stats marshalled to file',\
-                  `dump_file`+'.',sys_exit
+                  repr(dump_file)+'.',sys_exit
         if text_file:
             text_file = unquote_filename(text_file)
             pfile = open(text_file,'w')
             pfile.write(output)
             pfile.close()
             print '\n*** Profile printout saved to text file',\
-                  `text_file`+'.',sys_exit
+                  repr(text_file)+'.',sys_exit
 
         if opts.has_key('r'):
             return stats

IPython/core/page.py

@@ -250,7 +250,7 b' def page_file(fname, start=0, pager_cmd=None):'
                 start -= 1
             page(open(fname).read(),start)
         except:
-            print 'Unable to show file',`fname`
+            print 'Unable to show file',repr(fname)
 
 
 def get_pager_cmd(pager_cmd=None):