Whitespace-Only Line in PY
Matches lines containing only whitespace (or empty lines).
Try it in the PY tester →Pattern
regexPY
^\s*$ (flags: gm)Python (re) code
pyPython
import re
pattern = re.compile(r"^\s*$", re.MULTILINE)
input_text = "line one\n \n\nline two"
for m in pattern.finditer(input_text):
print(m.group(0))Stdlib `re` module — no third-party dependency. Works on Python 3.6+.
How the pattern works
`^\s*$` anchors to a full line that contains zero or more whitespace characters and nothing else.
Examples
Input
line one
line twoMatches