Join a list of lists together into one list in Python -

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संभव डुप्लिकेट:

मेरे पास सूची है जिसमें कई सूचियां शामिल हैं I यहां एक उदाहरण है,

<पूर्व> [[Obj, Obj, Obj, Obj], [Obj], [Obj], [[Obj, Obj], [Obj, Obj, Obj]]]

क्या इन सभी वस्तुओं को एक सूची के रूप में शामिल करने का कोई तरीका है, इसलिए आउटपुट कुछ ऐसा होगा 

  [Obj, Obj, Obj, Obj 
 
 
 हां, ओज, ओबजे, ओबजे, ओबजे, ओबजे, ओबजे, ओबजे]   
 I: flatten (elem) में: के लिए मैं और अन्य: उत्पन्न elem  
  def flatten (lst): lm में elem के लिए: प्रकार (elem) में (ट्यूपल, सूची) / Code>  
 कृपया ध्यान दें, यह एक जनरेटर बनाता है, इसलिए यदि आपको एक सूची की आवश्यकता है, तो उसे  list ()  में लपेटें: 
 
  flattenedList = सूची (समतल (नेस्टेड सूची))

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