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# Python String replace() Method

## Description:

This method returns a copy of the string in which the occurrences of old have been replaced with new, optionally restricting the number of replacements to max

## Syntax:

    str.replace(old, new[, max])

## Parameters:

Here is the detail of parameters:

- old: old substring to be replaced.

- new: new substring which would replace old substring.

- max: if the optional argument max is given, only the first count occurrences are replaced.

## Return Value:

It returns a copy of the string with all occurrences of substring old replaced by new. If the optional argument max is given, only the first count occurrences are replaced.

## Example:

    #!/usr/bin/python

    str = "this is string example....wow!!! this is really string";
    print str.replace("is", "was");
    print str.replace("is", "was", 3);

This will produce following result:

    thwas was string example....wow!!! thwas was really string
    thwas was string example....wow!!! thwas is really string

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