IOException: （２）Google App Engineã§ã€åŠå¾„何メートル検索ー実装編ã¨ã„ã†ã‚ã‘ã§ã€Google App Engineã§GeoModelを使ã£ãŸä½ç½®æ¤œç´¢ã‚’実装ã—よã†ã¨æ€ã„ã¾ã™ã€‚ Pythonã§æ›¸ã„ã¦ã„ãã¾ã™ã®ã§ã”了承をã°ã€‚Javaã§ã‚‚ã»ã¼åŒã˜ãƒ—ãƒã‚»ã‚¹ã§è¡Œã‘ã‚‹ã¨æ€ã„ã¾ã™ã€‚ from geomodel import GeoModel class User(GeoModel): # ãŠå¥½ããªãƒ—ãƒãƒ‘ティを実装ã—ã¦ãã ã•ã„。 ç°¡å˜ãªã“ã¨ã«ã€GeoModelを基幹クラスã¨ã—ã¦ã€å®Ÿè£…ã™ã‚‹ã ã‘ã§å¤§ä¸ˆå¤«ã§ã™ã€‚ GeoModelを継承ã™ã‚‹ã¨ã€location・location_geocellsã¨ã„ã†ã€ï¼’ã¤ã®ãƒ—ãƒãƒ‘ティを実装ã—ã¾ã™ã€‚ locationã«ã¯ã€db.GeoPtåž‹ã€ã¤ã¾ã‚ŠLatitudeã¨Longitudeã®ï¼’ã¤ã®è¦ç´ ã‚’æ ¼ç´ã—ã¾ã™ã€‚ 対ã—ã¦location_geocellsã¯ã€locationã®æƒ…å ±ã«åŸºã¥ã„ã¦ã€ç”Ÿæˆã•ã‚ŒãŸGeoHashãŒæ ¼ç´ã•ã‚Œã¾ã™ã€‚ myself =
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