Python IndentationError unindent does not match any outer indentation level

Question

I m a beginner in python    I have this error    Error    def on data self data                           IdentationError   unindent does not match any outer indentation level   I code with notepad   in windows 8 1  I don t understand why I have this error  I have paid attention about tabs and space   I want to save data in self file  Here is my code    from tweepy import OAuthHandler from tweepy streaming import StreamListener from tweepy import Stream import tweepy import time    class StdOutListener StreamListener        def   init   self file           self file   file      def on data self  data            print data         self file write data          return True      def on error self  status           print status   def main         file   open  work txt   w       listn   StdOutListener file      consumer key        consumer secret         access token        access token secret         auth   tweepy OAuthHandler consumer key  consumer secret      auth set access token access token  access token secret       api   tweepy API auth        filename open  helloworld txt   r        f filename readlines        filename close         for line in f          api update status line       stream   Stream auth  listn      stream filter track   lol        file close

User · Answer

make sure     comments are only a tab away and not 5 spaces

User · Answer

You are mixing tabs and spaces  Don t do that  Specifically  the   init   function body is indented with tabs while your on data method is not   Here is a screenshot of your code in my text editor  I set the tab stop to 8 spaces  which is what Python uses  and selected the text  which causes the editor to display tabs with continuous horizontal lines     You have your editor set to expanding tabs to every fourth column instead  so the methods appear to line up   Run your code with   python -tt scriptname py   and fix all errors that finds  Then configure your editor to use spaces only for indentation  a good editor will insert 4 spaces every time you use the TAB key

User · Answer

You have mixed indentation formatting  spaces and tabs   On Notepad    Change Tab Settings to 4 spaces  Go to Settings -  Preferences -  Tab Settings -  Replace by spaces  Fix the current file mixed indentations  Select everything CTRL A  Click TAB once  to add an indentation everywhere  Run SHIFT   TAB to remove the extra indentation  it will replace all TAB characters to 4 spaces

User · Answer

I had the same problem quite a few times  It happened especially when i tried to paste a few lines of code from an editor online  the spaces are not registered properly as  tabs  or  spaces     However the fix was quite simple  I just had to remove the spacing across all the lines of code in that specific set and space it again with the tabs correctly  This fixed my problem

User · Answer

i have done proper indentation with spaces but syoll it was throwing error  Then I removed al the spaces and use Tab then it started working  thx

User · Answer

Python IndentationError unindent does not match any outer indentation level    usr bin bash -tt   or    usr bin python -tt

User · Answer

I recently ran into the same problem but the issue wasn t related to tabs and spaces but an odd Unicode character that appeared invisible to the eye in my IDE  Eventually  I isolated the problem and typed out the line exactly as it was and checked the git diff     If you are able to isolate the line before the reported line and type it out again  you might find that it solves your problem  Won t tell you why it happened in the first place  but it at least gets rid of the issue

[python] Python IndentationError unindent does not match any outer indentation level

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