Created
November 2, 2021 04:16
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Basic download script
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| import argparse | |
| import sys | |
| # as seen in https://github.com/python/cpython/pull/29217 | |
| def download(): | |
| parser = argparse.ArgumentParser( | |
| description="Download the provided URL (FTP/HTTP/HTTPS supported) " | |
| "and print it to stdout by default. If specified, write to OUTPUT " | |
| "instead." | |
| ) | |
| parser.add_argument("URL", help="(encoded) URL to download") | |
| parser.add_argument( | |
| "-o", | |
| "--output", | |
| type=argparse.FileType('wb'), default=sys.stdout.buffer, | |
| help="write to OUTPUT instead of stdout" | |
| ) | |
| args = parser.parse_args() | |
| buffer = memoryview(bytearray(32768)) | |
| try: | |
| with urlopen(args.URL) as response: | |
| while n_bytes_read := response.readinto(buffer): | |
| args.output.write(buffer[:n_bytes_read]) | |
| except URLError as exc: | |
| print(f"Error while downloading '{args.URL}': {exc.reason}") | |
| if args.output is not sys.stdout.buffer: | |
| args.output.close() | |
| if __name__ == "__main__": | |
| download() |
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