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"""
Generate the rtd-requirements.txt file given a release tag and version number
"""
import argparse
import io
import os
import sys
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--tag", required=True)
parser.add_argument("--version", required=True)
parser.add_argument("-o", "--outfile-path", default="-")
parser.add_argument("template")
args = parser.parse_args()
if args.tag == "from-travis":
args.tag = os.environ.get("TRAVIS_TAG", "pseudo-staging")
if args.outfile_path == "-":
args.outfile_path = os.dup(sys.stdout.fileno())
outfile = io.open(args.outfile_path, "w", encoding="utf-8")
with io.open(args.template, "r", encoding="utf-8") as infile:
template = infile.read()
content = template.format(_tag=args.tag, _version=args.version)
outfile.write(content)
if __name__ == "__main__":
main()
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