What does [:-1] mean/do in python? -

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इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 23 उत्तर

    अजगर असाइनमेंट पर कार्य करना और के रूप में उत्सुक था कि [: -1] निम्न कोड के संदर्भ में है: निर्देश = f.readline () [: - 1]

    यहां पर खोज की है इसलिए और Google पर लेकिन कोई फायदा नहीं हुआ एक स्पष्टीकरण पसंद आएगा!

    यह अंतिम वर्ण को छोड़ने के लिए स्ट्रिंग को स्लाइस देता है, इस मामले में एक नया वर्ण : 

      & gt; & gt; & gt; 'Test \ n' [: - 1] 'test'   
     चूंकि यह रिक्त स्ट्रिंग पर भी काम करता है, यह अंतिम वर्ण को हटाने का एक बहुत ही सुरक्षित तरीका है, यदि वर्तमान:  
      & gt; & gt; & gt; '' [: -1] ''   
     यह किसी भी क्रम पर काम करता है, न सिर्फ तार।

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