depau/youtube-dl
1
0
Fork 0
mirror of https://github.com/ytdl-org/youtube-dl.git synced 2024-11-21 17:51:51 +00:00
Code Issues Releases Wiki Activity

[README.md] Improve documentation on safe metadata extraction and add more examples

Browse source
This commit is contained in:
Sergey M․ 2018-11-05 00:11:36 +07:00
parent dbdaaa231a
commit 22e07ce502
No known key found for this signature in database
GPG key ID: 2C393E0F18A9236D
1 changed files with 22 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
README.md
View file

@ -1168,7 +1168,28 @@ title = self._search_regex(
### Use safe conversion functions
Wrap all extracted numeric data into safe functions from `utils`: `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
Wrap all extracted numeric data into safe functions from [`youtube_dl/utils.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/utils.py): `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
Use `url_or_none` for safe URL processing.
Use `try_get` for safe metadata extraction from parsed JSON.
Explore [`youtube_dl/utils.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/utils.py) for more useful convenience functions.
#### More examples
##### Safely extract optional description from parsed JSON
```python
description = try_get(response, lambda x: x['result']['video'][0]['summary'], compat_str)
```
##### Safely extract more optional metadata
```python
video = try_get(response, lambda x: x['result']['video'][0], dict) or {}
description = video.get('summary')
duration = float_or_none(video.get('durationMs'), scale=1000)
view_count = int_or_none(video.get('views'))
```
# EMBEDDING YOUTUBE-DL