Make logging unicode-aware

Closes gh-1777

IPython/core/logger.py

@@ -14,9 +14,12 b''
 
 # Python standard modules
 import glob
+import io
 import os
 import time
 
+from IPython.utils.py3compat import str_to_unicode
+
 #****************************************************************************
 # FIXME: This class isn't a mixin anymore, but it still needs attributes from
 # ipython and does input cache management.  Finish cleanup later...
@@ -24,7 +27,7 b' import time'
 class Logger(object):
     """A Logfile class with different policies for file creation"""
 
-    def __init__(self, home_dir, logfname='Logger.log', loghead='',
+    def __init__(self, home_dir, logfname='Logger.log', loghead=u'',
                  logmode='over'):
 
         # this is the full ipython instance, we need some attributes from it
@@ -84,7 +87,7 b' class Logger(object):'
         logmode = self.logmode
 
         if logmode == 'append':
-            self.logfile = open(self.logfname,'a')
+            self.logfile = io.open(self.logfname, 'a', encoding='utf-8')
 
         elif logmode == 'backup':
             if isfile(self.logfname):
@@ -94,16 +97,16 b' class Logger(object):'
                 if isfile(backup_logname):
                     os.remove(backup_logname)
                 os.rename(self.logfname,backup_logname)
-            self.logfile = open(self.logfname,'w')
+            self.logfile = io.open(self.logfname, 'w', encoding='utf-8')
 
         elif logmode == 'global':
             self.logfname = os.path.join(self.home_dir,self.logfname)
-            self.logfile = open(self.logfname, 'a')
+            self.logfile = io.open(self.logfname, 'a', encoding='utf-8')
 
         elif logmode == 'over':
             if isfile(self.logfname):
                 os.remove(self.logfname)
-            self.logfile = open(self.logfname,'w')
+            self.logfile = io.open(self.logfname,'w', encoding='utf-8')
 
         elif logmode == 'rotate':
             if isfile(self.logfname):
@@ -116,7 +119,7 b' class Logger(object):'
                         num = int(ext[1:-1])+1
                         os.rename(f, root+'.'+`num`.zfill(3)+'~')
                 os.rename(self.logfname, self.logfname+'.001~')
-            self.logfile = open(self.logfname,'w')
+            self.logfile = io.open(self.logfname, 'w', encoding='utf-8')
 
         if logmode != 'append':
             self.logfile.write(self.loghead)
@@ -190,13 +193,13 b' which already exists. But you must first start the logging process with'
             write = self.logfile.write
             if kind=='input':
                 if self.timestamp:
-                    write(time.strftime('# %a, %d %b %Y %H:%M:%S\n',
-                                        time.localtime()))
+                    write(str_to_unicode(time.strftime('# %a, %d %b %Y %H:%M:%S\n',
+                                        time.localtime())))
                 write(data)
             elif kind=='output' and self.log_output:
-                odata = '\n'.join(['#[Out]# %s' % s
+                odata = u'\n'.join([u'#[Out]# %s' % s
                                    for s in data.splitlines()])
-                write('%s\n' % odata)
+                write(u'%s\n' % odata)
             self.logfile.flush()
 
     def logstop(self):

IPython/core/magics/logging.py

@@ -19,6 +19,7 b' import sys'
 # Our own packages
 from IPython.core.magic import Magics, magics_class, line_magic
 from IPython.utils.warn import warn
+from IPython.utils.py3compat import str_to_unicode
 
 #-----------------------------------------------------------------------------
 # Magic implementation classes
@@ -96,7 +97,7 b' class LoggingMagics(Magics):'
             logfname = os.path.expanduser(logfname)
         self.shell.logfile = logfname
 
-        loghead = '# IPython log file\n\n'
+        loghead = u'# IPython log file\n\n'
         try:
             logger.logstart(logfname, loghead, logmode, log_output, timestamp,
                             log_raw_input)
@@ -121,12 +122,12 b' class LoggingMagics(Magics):'
                 log_write = logger.log_write
                 output_hist = self.shell.history_manager.output_hist
                 for n in range(1,len(input_hist)-1):
-                    log_write(input_hist[n].rstrip() + '\n')
+                    log_write(input_hist[n].rstrip() + u'\n')
                     if n in output_hist:
-                        log_write(repr(output_hist[n]),'output')
+                        log_write(str_to_unicode(repr(output_hist[n])),'output')
             else:
-                logger.log_write('\n'.join(input_hist[1:]))
-                logger.log_write('\n')
+                logger.log_write(u'\n'.join(input_hist[1:]))
+                logger.log_write(u'\n')
             if timestamp:
                 # re-enable timestamping
                 logger.timestamp = True
@@ -142,7 +143,7 b' class LoggingMagics(Magics):'
         In order to start logging again, a new %logstart call needs to be made,
         possibly (though not necessarily) with a new filename, mode and other
         options."""
-        self.logger.logstop()
+        self.shell.logger.logstop()
 
     @line_magic
     def logoff(self, parameter_s=''):