我正在制作一款使用Google Places API的应用。
这是我在URL中为types参数构建字符串的代码段。
url = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?"
#required params
requiredparams = "location="+str(lat)+","+str(lon)+"&radius="+str(radius)+"&sensor=true&rankby=distance&types="
place_types = "bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair|\
clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store|\
grocery_or_supermarket|gym|hair_care|hardware_store|health|home_goods_store|jewelry_store|laundry|liquor_store|\
locksmith|meal_delivery|meal_takeaway|night_club|moving_company|pet_store|pharmacy|plumber|restaurant|shoe_store|\
shopping_mall|spa|store|taxi_stand|travel_agency"
当我打印它（url+requiredparams+place_types）时，我会在开始新行的单词之前得到空白。
https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=10,13&radius=500&sensor=true&rankby=distance&types=bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair| clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store| grocery_or_supermarket|gym|hair_care|hardware_store|health|home_goods_st
ore|jewelry_store|laundry|liquor_store| locksmith|meal_delivery|meal_takeaway|night_club|moving_company|pet_store|pharmacy|plumber|restaurant|shoe_store| shopping_mall|spa|store|taxi_stand|travel_agency
我不明白。我做错了什么？
我在控制台上尝试了这个：
>>> d = "word1|\
... word2|\
... word3"
>>> d
'word1|word2|word3'
工作正常。为什么不是我的代码片段？
答案 0 :(得分：1)
是否为字符串内的缩进。
您的代码片段已修复：
pt = "bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair|\
clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store|\
grocery_or_supermarket|gym|hair_care|hardware_store|health|home_goods_store|jewelry_store|laundry|liquor_store|\
locksmith|meal_delivery|meal_takeaway|night_club|moving_company|pet_store|pharmacy|plumber|restaurant|shoe_store|\
shopping_mall|spa|store|taxi_stand|travel_agency"
或更好的用户多行字符串"""：
pt = """bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair|
clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store|
grocery_or_supermarket|gym|hair_care|hardware_store|health|home_goods_store|jewelry_store|laundry|liquor_store|
locksmith|meal_delivery|meal_takeaway|night_club|moving_company|pet_store|pharmacy|plumber|restaurant|shoe_store|
shopping_mall|spa|store|taxi_stand|travel_agency"""
答案 1 :(得分：0)
因为你的字符串看起来像"bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair|\ clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store|\（没有任何换行符）到Python。不要使用缩进或者连续使用。你的字符串可以解决这个问题。
答案 2 :(得分：0)
尝试在两行之间只使用一个换行符，看起来你有一个额外的（至少在我的手机上）。反斜杠+换行符后，一般不要使用额外的空格。
答案 3 :(得分：0)
你可以这样做：
place_types = (
"bakery|bar|beauty_salon|book_store|bowling_alley|cafe|car_dealer|car_rental|car_wash|car_repair|"
"clothing_store|convenience_store|department_store|electronics_store|florist|food|furniture_store|"
"grocery_or_supermarket|gym|hair_care|hardware_store|health|home_goods_store|jewelry_store|laundry|liquor_store|"
"locksmith|meal_delivery|meal_takeaway|night_club|moving_company|pet_store|pharmacy|plumber|restaurant|shoe_store|"
"shopping_mall|spa|store|taxi_stand|travel_agency"
)