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GeezerVison is showing github.com — ThinkPython2/code/sed.py at master · AllenDowney/ThinkPython2 Expand file tree/ Copy pathsed.pyMore file actions 45 lines (31 loc) · 917 Bytes / Copy pathsed.pyFile metadata and controls45 lines (31 loc) · 917 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 """This module contains a code example related to Think Python, 2nd Edition by Allen Downey https://greenteapress.com/wp/think-python-2e/ Copyright 2015 Allen Downey License: http://creativecommons.org/licenses/by/4.0/ """ from __future__ import print_function, division def sed(pattern, replace, source, dest): """Reads a source file and writes the destination file. In each line, replaces pattern with replace. pattern: string replace: string source: string filename dest: string filename """ fin = open(source, 'r') fout = open(dest, 'w') for line in fin: line = line.replace(pattern, replace) fout.write(line) fin.close() fout.close() def main(): pattern = 'pattern' replace = 'replace' source = 'sed_tester.txt' dest = source + '.replaced' sed(pattern, replace, source, dest) if __name__ == '__main__': main() |
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