![]() ![]() One can learn about more Python concepts here. This method searches the pattern in the string and then replace it with a new given expression. It is a built-in Python method in re module that returns replaced string. To replace a string in Python, the regex sub() method is used. Output: "Joe Kim MaX aby LiZa" Closing thoughts In order to do that, we will make two groups and then add a function for the replacement. We need to replace the uppercase with the lowercase and vice versa. In this example, the string contains Uppercase and lowercase that we need to replace. It can be done with a minor modification which you can see in the following example. Now, if ever, you want to replace multiple patterns but with different replacements then also regex can be used. Output: "Joe, Kim, Ema, Max, Aby, Liza" Replacing multiple patterns with multiple replacements using regex Syntax: re.sub(pattern_1 | pattern_2, replacement, string, count=0, flags=0) This can be easily done using the following syntax. We can use regex to replace multiple patterns at one time using regex. It is optional.įlags: The regex flags are optional. String: The variable that contains the given string on which you want to perform the operation.Ĭount: If the pattern occurs multiple times in the string, the number of times you want to you want it to be replaced. Pattern: The regular expression you want to search and find inside the given string in Python. Syntax: re.sub(pattern, replacement, string, count=0, flags=0)įirst of all, let us understand what all these parameters mean: Python re.sub() function in the re module is used to do so. The regex method searches a string and then replace it with some other value. Now we'll learn about the search and replace operation using regex. In order to use re, we need to import the module at the beginning of our code. Python has a built-in module called re, which helps in searching and replacing.
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