replace() method replaces each matching occurrence of a substring with another string.
text = 'bat ball'# replace 'ba' with 'ro' replaced_text = text.replace('ba', 'ro')print(replaced_text) # Output: rot roll
Its syntax is:
str.replace(old, new [, count])
replace() method can take a maximum of three arguments:
- old - the old substring we want to replace
- new - new substring which will replace the old substring
- count (optional) - the number of times you want to replace the old substring with the new string
Note: If count is not specified, the
replace() method replaces all occurrences of the old substring with the new string.
replace() Return Value
replace() method returns a copy of the string where the old substring is replaced with the new string. The original string remains unchanged.
If the old substring is not found, it returns a copy of the original string.
Example 1: Using replace()
song = 'cold, cold heart'# replacing 'cold' with 'hurt' print(song.replace('cold', 'hurt'))song = 'Let it be, let it be, let it be, let it be'# replacing only two occurrences of 'let' print(song.replace('let', "don't let", 2))
hurt, hurt heart Let it be, don't let it be, don't let it be, let it be
More Examples on String replace()
song = 'cold, cold heart'replaced_song = song.replace('o', 'e')# The original string is unchanged print('Original string:', song) print('Replaced string:', replaced_song) song = 'let it be, let it be, let it be' # maximum of 0 substring is replaced # returns copy of the original stringprint(song.replace('let', 'so', 0))
Original string: cold, cold heart Replaced string: celd, celd heart let it be, let it be, let it be