Python - re.compile()

In Python, re.compile() from the re module creates a regex object from a regular expression pattern. This object lets you perform operations like search(), match(), and findall(). In this article, we will understand about re.compile() method.

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Syntax of re.compile()

re.compile(pattern, flags=0)

Parameters:

1. pattern (str):
   • The regular expression pattern you want to compile.
   • Example: r'\d+' (matches one or more digits).
2. flags (optional):
   • Modifiers that change the behavior of the regex.
   • Common flags:
     • re.IGNORECASE or re.I: Ignore case sensitivity.
     • re.MULTILINE or re.M: Allow ^ and $ to match start and end of lines.
     • re.DOTALL or re.S: Allow . to match newline characters.
     • re.VERBOSE or re.X: Allow adding comments and whitespace for better readability.

Without using flags

In this code we are not using flags which is an optional parameter:

Found: 123-45-6789

With Using Flags

In this code we are using flags (Modifiers that change the behavior of the regex.)