google app engine - difference between DateProperty and DateTimeProperty -

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आम आदमी की अवधि में, ndb.DateProperty और ndb.DateTimeProperty < / code>? मैं कब का उपयोग करेगा? उदाहरण के लिए, मेरा उद्देश्य किसी भी परम के साथ auto_now_add = true का उपयोग करना है

< P> से:

ये मानक पायथन डैटटाइम मॉड्यूल के संबंधित कक्षाओं (तिथि, समय, दिनांक समय) से संबंधित मान लेते हैं। तीनों का सबसे सामान्य दिनांकटाइमप्रॉपर्टी है, जो कैलेंडर की तारीख और दिन का समय दोनों को दर्शाता है; दूसरों को विशेष प्रयोजनों के लिए कभी-कभी उपयोगी होते हैं जिनके लिए सिर्फ एक तारीख (जैसे जन्म की तारीख) या केवल एक समय (जैसे मीटिंग समय) की आवश्यकता होती है। तकनीकी कारणों से, तिथिप्रॉपर्टी और टाइमपॉर्फ़टी डेटटाइमप्रॉपर्टी के उप-कक्षाएं हैं, लेकिन आपको इस विराट संबंध पर निर्भर नहीं होना चाहिए (और ध्यान दें कि यह केवल समय-समय पर मॉड्यूल द्वारा परिभाषित अंतर्निहित वर्गों के बीच के विरासत संबंधों से अलग है)।

अपेक्षित रूप से, यदि आपको समय के लिए कोई संदर्भ (जैसे: सिर्फ तारीख) की ज़रूरत नहीं है, तो दूसरा उपयोग किया जाता है, जब आप पूरी जानकारी चाहते हैं जब आप एक या दूसरे का उपयोग करेंगे, तो यह बिल्कुल निर्भर करता है कि आपको एक सटीक पल में कौन सी जानकारी की आवश्यकता है।

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