Python (re)

IBAN (International Bank Account Number) in PY

Validate IBAN bank account identifiers: 2-letter country code, 2 check digits, 11–30 alphanumerics.

Try it in the PY tester →

Pattern

regexPY
^[A-Z]{2}\d{2}[A-Z0-9]{11,30}$

Python (re) code

pyPython
import re

pattern = re.compile(r"^[A-Z]{2}\d{2}[A-Z0-9]{11,30}$")
input_text = "GB29NWBK60161331926819"
for m in pattern.finditer(input_text):
    print(m.group(0))

Stdlib `re` module — no third-party dependency. Works on Python 3.6+.

How the pattern works

^[A-Z]{2} matches the ISO country prefix (e.g. DE, GB, FR). \d{2} matches the two-digit check sum. [A-Z0-9]{11,30}$ matches the remaining bank/account portion which varies by country between 11 and 30 characters. This validates structure but does NOT verify the mod-97 checksum — pair with a checksum function for full validation.

Examples

Input

GB29NWBK60161331926819

Matches

  • GB29NWBK60161331926819

Input

DE89370400440532013000

Matches

  • DE89370400440532013000

Input

1234567890

No match

—

Same pattern, other engines

JavaScript / ECMAScript

Supported

See how this pattern looks (and behaves) in JavaScript's built-in RegExp.

Go (RE2)

Supported

See how this pattern looks (and behaves) in Go's `regexp` package (RE2 engine).

← Back to IBAN (International Bank Account Number) overview (all engines)