JWT Token in PY
Match JSON Web Tokens (JWTs) — three base64url-encoded segments separated by dots.
Try it in the PY tester →Pattern
regexPY
eyJ[A-Za-z0-9_\-]+\.eyJ[A-Za-z0-9_\-]+\.[A-Za-z0-9_\-]+ (flags: g)Python (re) code
pyPython
import re
pattern = re.compile(r"eyJ[A-Za-z0-9_\-]+\.eyJ[A-Za-z0-9_\-]+\.[A-Za-z0-9_\-]+")
input_text = "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.abc123-_"
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
Both header and payload segments start with eyJ (base64 of '{"'), followed by base64url chars, joined by dots and followed by the signature segment.
Examples
Input
eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.abc123-_Matches
eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.abc123-_
Input
Bearer token-hereNo match
—