“Python reemplazar enésimo en la cadena” Código de respuesta

Python reemplazar enésimo en la cadena

my_string = "This is a long string that contain a string about a string"

# I want to replace the second "string" with "text"

nth = 2  

my_string = my_string.replace("string", "text", nth)
my_string = my_string.replace("text", "string", nth-1)
# >>> my_string == "This is a long string that contain a text about string"