Substitution

• takes extracted text and replaces or rearranges them

Substitution Examples

• License plate
• file names
• Typos
• Version numbers

Substitution Method

re.sub(pattern, replacement, string, count=0, flags=0)

Backreferences

• allow matched patterns to be placed in replacement

Backreference Syntax

Backreference Example

Using Raw Strings

Revised Example