How to replace text in a column of a Pandas dataframe

Question

I have a column in my dataframe like this  range  quot  2 30  quot   quot  50 290  quot   quot  400 1000  quot        and I want to replace the   comma with - dash  I m currently using this method but nothing is changed  org info exc  range   replace       -   inplace True   Can anybody help

User · Answer

In addition  for those looking to replace more than one character in a column  you can do it using regular expressions  import re chars to remove          -                 regular expression         re escape      join  chars to remove          df  string col   str replace regular expression      regex True

User · Answer

Replace all commas with underscore in the column names   data columns  data columns str replace         regex True

User · Answer

Use the vectorised str method replace   In  30    df  range     df  range   str replace      -   df Out 30         range 0     2-30  1   50-290    EDIT  So if we look at what you tried and why it didn t work   df  range   replace      -  inplace True    from the docs we see this desc      str or regex  str  string exactly matching to replace will be replaced   with value   So because the str values do not match  no replacement occurs  compare with the following   In  43    df   pd DataFrame   range     2 30          df  range   replace      -   inplace True  df  range   Out 43   0     2 30  1         - Name  range  dtype  object   here we get an exact match on the second row and the replacement occurs

User · Answer

If you only need to replace characters in one specific column  somehow regex True and in place True all failed  I think this way will work  data  quot column name quot     data  quot column name quot   apply lambda x  x replace  quot characters need to replace quot    quot new characters quot     lambda is more like a function that works like a for loop in this scenario  x here represents every one of the entries in the current column  The only thing you need to do is to change the  quot column name quot    quot characters need to replace quot  and  quot new characters quot

User · Answer

For anyone else arriving here from Google search on how to do a string replacement on all columns  for example  if one has multiple columns like the OP s  range  column   Pandas has a built in replace method available on a dataframe object   df replace       -   regex True   Source  Docs

[python] How to replace text in a column of a Pandas dataframe?

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