Replace first occurrence of string in Python

Question

I have some sample string  How can I replace first occurrence of this string in a longer string with empty string   regex   re compile  text   match   regex match url  if match      url   url replace regex

User · Answer

Use re sub directly  this allows you to specify a count   regex sub     url  1     Note that the order of arguments is replacement  original not the opposite  as might be suspected

User · Answer

string replace   function perfectly solves this problem   string replace s  old  new   maxreplace   Return a copy of string s with all occurrences of substring old replaced by new  If the optional argument maxreplace is given  the first maxreplace occurrences are replaced    gt  gt  gt  u longlongTESTstringTEST  replace  TEST        1  u longlong stringTEST

[python] Replace first occurrence of string in Python

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