人言落日是天涯，望极天涯不见家 wrote: > print r'\\.\' > > This line will cause error. I just want to print the > \\.\ > why the prefix character "r" isn't effective. Thanks!
Because of the way in which Python parses strings, you can't end a string -- even a raw one -- with an odd (1, 3, 5 etc) number of backslashes. In you example, you'd have to do this: print "\\\\.\\" although, depending on what the code was doing, you might be able to use forward slashes instead; a surprising number of Microsoft's APIs allow forward slashes as well as backslashes. Not, however, anything which is interpreted by the command shell (which sees a forward slash as a flag indicator) nor typically anything handled by the Shell subsystem. TJG -- http://mail.python.org/mailman/listinfo/python-list
