# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"(bra){3}"
test_str = ("# Quantifier:{number} 篇\n\n"
"#下方為測試文字區塊\n"
"b\n"
"br\n"
"bra\n"
"brabra\n"
"brabrabra\n"
"brabrabra brabrabrabarbarbabarbarbab\n\n"
"#解釋:藍色部分就是透過規則/(bra){3}/所配對成功的文字,當 (bra)這組配對出現三次食就算配對成功。\n")
matches = re.finditer(regex, test_str, re.MULTILINE)
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