# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"(?:Solution:)?\s*(?:\d+\. )?(.+?)(?=\n(?:Solution:|\d+\. )|\Z)"
test_str = ("Solution: To create a Nextflow configuration file, follow these steps:\n\n"
"1. Create a new file named `nextflow.config` in the project directory.\n"
"2. Declare the configuration options by using the `params` keyword followed by variable names and their default values. For example:\n\n"
"```\n"
"params {\n"
" inputDir = './input'\n"
" outputDir = './output'\n"
" numThreads = 4\n"
"}\n"
"```\n\n"
"3. You can also override the default values in the configuration file by specifying new values when running the pipeline. For example:\n\n"
"```\n"
"nextflow run my_pipeline.nf --inputDir /path/to/input --outputDir /path/to/output --numThreads 8\n"
"```\n\n"
"4. Save the file and use it in your pipeline by calling the parameter name with the `$` symbol. For example:\n\n"
"```\n"
"process myProcess {\n"
" input:\n"
" file fastq from \"$inputDir/*_R{1,2}.fastq.gz\"\n"
" output:\n"
" file(\"${outputDir}/${sampleName}_mapped.bam\")\n"
" script:\n"
" \"\"\"\n"
" my_command --input $fastq --threads $numThreads --output ${outputDir}/${sampleName}_mapped.bam\n"
" \"\"\"\n"
"}\n"
"```\n\n"
"Next request.")
matches = re.finditer(regex, test_str, re.MULTILINE | re.DOTALL)
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