bpo-38678: Improve argparse example in tutorial #17207
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rhettinger
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| parser.add_argument('filenames', nargs='+') | ||
| parser.add_argument('-l', '--lines', type=int, default=10) | ||
| args = parser.parse_args() | ||
| print(args) |
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This is a much better example for a beginner. With the prompts removed, and after switching from 'source diff' to 'rich diff', I could copy and paste the new code into an IDLE editor (and Run ... Customized to add sample args).
| >>> parser.parse_args(['-vvv']) | ||
| Namespace(verbose=3) | ||
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| Note, the *default* will be ``None`` unless explicitly set to *0*. |
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Here, not the tutorial, is the proper place to explain this.
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Thanks @rhettinger for the PR 🌮🎉.. I'm working now to backport this PR to: 3.7, 3.8. |
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(cherry picked from commit 04c79d6) Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>
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GH-17212 is a backport of this pull request to the 3.8 branch. |
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GH-17213 is a backport of this pull request to the 3.7 branch. |
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(cherry picked from commit 04c79d6) Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>
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https://bugs.python.org/issue38678