mirror of
https://github.com/instaloader/instaloader.git
synced 2024-08-17 12:19:38 +02:00
Fixes to instaloader.Post metadata retrieval
Fixes a KeyError which occurred when fetching some information note available in Post._node. Makes all properties not throw exceptions, rather they return None if the information cannot be obtained. sidecar_edges is now a method get_sidecar_edges(). get_comments() does not do any additional requests if the post does not have any comment. Fixes #39.
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@ -222,11 +222,19 @@ class Post:
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self._full_metadata_dict = pic_json["media"]
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return self._full_metadata_dict
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def __getitem__(self, item):
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"""Implements self[item]. This must not be used from outside of Post. Use the properties instead."""
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if item in self._node:
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return self._node[item]
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return self._full_metadata[item]
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def _field(self, *keys) -> Any:
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"""Lookups given fields in _node, and if not found in _full_metadata. Raises KeyError if not found anywhere."""
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# pylint:disable=invalid-name
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try:
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d = self._node
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for key in keys:
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d = d[key]
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return d
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except KeyError:
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d = self._full_metadata
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for key in keys:
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d = d[key]
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return d
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@property
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def owner_username(self) -> str:
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@ -234,7 +242,7 @@ class Post:
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try:
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if self._profile:
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return self._profile.lower()
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return self['owner']['username'].lower()
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return self._field('owner', 'username').lower()
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except (InstaloaderException, KeyError, TypeError) as err:
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self._instaloader.error("Get owner name of {}: {} -- using \'UNKNOWN\'.".format(self, err))
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return 'UNKNOWN'
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@ -255,9 +263,8 @@ class Post:
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# if __typename is not in node, it is an old image or video
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return 'GraphImage'
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@property
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def sidecar_edges(self) -> List[Dict[str, Any]]:
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return self['edge_sidecar_to_children']['edges']
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def get_sidecar_edges(self) -> List[Dict[str, Any]]:
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return self._field('edge_sidecar_to_children', 'edges')
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@property
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def caption(self) -> Optional[str]:
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@ -271,43 +278,45 @@ class Post:
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return self._node['is_video']
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@property
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def video_url(self) -> str:
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return self['video_url']
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def video_url(self) -> Optional[str]:
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if self.is_video:
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return self._field('video_url')
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@property
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def viewer_has_liked(self) -> bool:
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"""Whether the viewer has liked the post.
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:raises LoginRequiredException: if not logged in."""
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def viewer_has_liked(self) -> Optional[bool]:
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"""Whether the viewer has liked the post, or None if not logged in."""
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if not self._instaloader.is_logged_in:
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raise LoginRequiredException("Login required to obtain whether viewer has liked {}.".format(self))
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return None
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if 'likes' in self._node and 'viewer_has_liked' in self._node['likes']:
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return self._node['likes']['viewer_has_liked']
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return self['viewer_has_liked']
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return self._field('viewer_has_liked')
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@property
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def likes(self) -> int:
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"""Likes count"""
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return self['edge_media_preview_like']['count']
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return self._field('edge_media_preview_like', 'count')
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@property
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def comments(self) -> int:
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"""Comment count"""
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return self['edge_media_to_comment']['count']
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return self._field('edge_media_to_comment', 'count')
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def get_comments(self) -> Iterator[Dict[str, Any]]:
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"""Iterate over all comments of the post."""
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comments_in_metadata = self['edge_media_to_comment']
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if self.comments == len(comments_in_metadata['edges']):
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if self.comments == 0:
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# Avoid doing additional requests if there are no comments
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return
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comment_edges = self._field('edge_media_to_comment', 'edges')
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if self.comments == len(comment_edges):
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# If the Post's metadata already contains all comments, don't do GraphQL requests to obtain them
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yield from (comment['node'] for comment in comments_in_metadata['edges'])
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yield from (comment['node'] for comment in comment_edges)
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yield from self._instaloader.graphql_node_list(17852405266163336, {'shortcode': self.shortcode},
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'https://www.instagram.com/p/' + self.shortcode + '/',
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lambda d: d['data']['shortcode_media']['edge_media_to_comment'])
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def get_location(self) -> Optional[Dict[str, str]]:
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"""If the Post has a location, returns a dictionary with fields 'lat' and 'lng'."""
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loc_dict = self["location"]
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loc_dict = self._field("location")
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if loc_dict is not None:
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location_json = self._instaloader.get_json("explore/locations/{0}/".format(loc_dict["id"]),
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params={'__a': 1})
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@ -770,7 +779,7 @@ class Instaloader:
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if post.typename == 'GraphSidecar':
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edge_number = 1
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downloaded = True
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for edge in post.sidecar_edges:
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for edge in post.get_sidecar_edges():
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edge_downloaded = self.download_pic(filename=filename,
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url=edge['node']['display_url'],
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mtime=post.date,
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