Regular Expressions 101

\ba Unicode word boundary

Character Class[A-Z]{2}

{2}matches exactly 2 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\d{10}a Unicode decimal digit, repeated exactly 10 times

\ba Unicode word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\b[A-Z]{2}\d{10}\b

New



An ISIN code, or international securities identification number, is a 12 digit code consisting of numbers and letters that distinctly identify securities.

An example of an ISIN is: LU1234567890

If I have a long text string, how can I detect an ISIN-pattern and extract all the isins from it in Python?

Regular Expression

Substitution