Alternative , without regular expression
Code:
#!/usr/bin/python
string = "some text in front From here in the middle to here at the end"
fromindex = string.index("From here")
toindex = string.index("to here")
tobeReplace = string[ fromindex : toindex + len("to here") ]
string.replace( tobeReplace , "new text")
Output:
Code:
'some text in front new test at the end'