Fix error on missing pitch and roll (#29)

streetview/download.py

@@ -2,7 +2,7 @@
 import time
 from dataclasses import dataclass
 from io import BytesIO
-from typing import Generator
+from typing import Generator, Tuple
 
 import requests
 from PIL import Image
@@ -22,9 +22,10 @@ class Tile:
     image: Image.Image
 
 
-def get_width_and_height_from_zoom(zoom: int) -> (int, int):
+def get_width_and_height_from_zoom(zoom: int) -> Tuple[int, int]:
     """
-    Returns the width and height of a panorama at a given zoom level, depends on the zoom level.
+    Returns the width and height of a panorama at a given zoom level, depends on the
+    zoom level.
     """
     return 2**zoom, 2 ** (zoom - 1)
 
@@ -33,7 +34,10 @@ def make_download_url(pano_id: str, zoom: int, x: int, y: int) -> str:
     """
     Returns the URL to download a tile.
     """
-    return f"https://cbk0.google.com/cbk?output=tile&panoid={pano_id}&zoom={zoom}&x={x}&y={y}"
+    return (
+        "https://cbk0.google.com/cbk"
+        f"?output=tile&panoid={pano_id}&zoom={zoom}&x={x}&y={y}"
+    )
 
 
 def fetch_panorama_tile(tile_info: TileInfo) -> Image.Image:

streetview/search.py

@@ -12,8 +12,8 @@ class Panorama(BaseModel):
     lat: float
     lon: float
     heading: float
-    pitch: float
-    roll: float
+    pitch: Optional[float]
+    roll: Optional[float]
     date: Optional[str]
 
 
@@ -79,8 +79,8 @@ def extract_panoramas(text: str) -> List[Panorama]:
             lat=pano[2][0][2],
             lon=pano[2][0][3],
             heading=pano[2][2][0],
-            pitch=pano[2][2][1],
-            roll=pano[2][2][2],
+            pitch=pano[2][2][1] if len(pano[2][2]) >= 2 else None,
+            roll=pano[2][2][2] if len(pano[2][2]) >= 3 else None,
             date=dates[i] if i < len(dates) else None,
         )
         for i, pano in enumerate(raw_panos)

tests/test_search.py

@@ -104,3 +104,15 @@ def test_search_where_there_are_no_dates():
 
     dates = [p.date for p in result]
     assert dates == [None] * len(dates)
+
+
+def test_coordinates_with_missing_pitch():
+    panos = search_panoramas(35.658353457849685, 139.6920989241623)
+    is_pitch_none = [p.pitch is None for p in panos]
+    assert any(is_pitch_none)
+
+
+def test_coordinates_with_missing_roll():
+    panos = search_panoramas(35.658353457849685, 139.6920989241623)
+    is_roll_none = [p.roll is None for p in panos]
+    assert any(is_roll_none)