# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"(process)+(.*)(\n.*)*(?=Edition)"
test_str = ("Throughout the book we’ve seen a variety of ways in which the shell processes input lines, especially using read. We can think of this process as a subset of the things the shell does when processing \n\n"
"command lines. This appendix provides a more detailed description of the steps involved in processing the command line and \n\n"
" \n"
"how you can get bash to make a second pass with eval. The material in this appendix also appears in Learning the bash Shell, 3rd Edition, by Cameron Newham (O’Reilly).")
matches = re.finditer(regex, test_str)
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