How do you replace all the occurrences of a certain character in a string

Question

I am reading a csv into a   import csv import collections import pdb import math import urllib  def do work      a get file  c  pythonwork cds cds csv     a remove chars a    print a 0 10   def get file start file    opens original file  reads it to array   with open start file  rb   as f      data list csv reader f     return  data   def remove chars a     badchars   a   b   c   d     for row in a      for letter in badchars        row 8  replace letter       return a   I would like to replace all occurrences of   a   b   c   d   in the 8th element of the line with empty string  the remove chars function is not working   Is there a better way to do this

User · Answer

I would use the translate method without translation table  It deletes the letters in second argument in recent Python versions   def remove chars line       line7 line 7  translate None  abcd       return line  7   line7  line 8    line    ad   da   sdf   asd            3424   342sfas   asdfaf   sdfa            afase   print line 7  line   remove chars line  print line 7

User · Answer

The problem is you re not doing anything with the result of replace  In Python strings are immutable so anything that manipulates a string returns a new string instead of modifying the original string   line 8    line 8  replace letter

User · Answer

You really should have multiple input  e g  one for firstname  middle names  lastname and another one for age  If you want to have some fun though you could try    gt  gt  gt  input given  join smith 25   gt  gt  gt  chars    join  i for i in input given if not i isdigit      gt  gt  gt  age input given translate None chars   gt  gt  gt  age  25   gt  gt  gt  name input given replace age     strip    gt  gt  gt  name  join smith    This would of course fail if there is multiple numbers in the input  a quick check would be   assert age in input given    and also   assert len name  lt len input given

[python] How do you replace all the occurrences of a certain character in a string?

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