# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"""
^\b(?!_) # start with a word character excluding underscore
(?=[^\d\n]*\d) # look ahead for any non-digits followed by a digit
(?=[^A-Z\n]*[A-Z]) # look ahead for an upper preceded by any non-upper
(?=[^a-z\n]*[a-z]) # look ahead for an lower preceded by any non-lower
(?=.*[!{}\[\]@\#$%^&*()<>_~+\-]) # one special character preceded by any characters
.{8,15}$ # 8 to 15 characters until the end
"""
test_str = ("@TestHey123!\n"
"TestHey@123!\n")
matches = re.finditer(regex, test_str, re.MULTILINE | re.VERBOSE | re.UNICODE)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
# Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html