What is the inverse function of zip in python? [duplicate]

by 
lst1, lst2 = zip(*zipped_list)

should give you the unzipped list.

*zipped_list unpacks the zipped_list object. it then passes all the tuples from the zipped_list object to zip, which just packs them back up as they were when you passed them in.

so if:

a = [1,2,3]
b = [4,5,6]

then zipped_list = zip(a,b) gives you:

[(1,4), (2,5), (3,6)]

and *zipped_list gives you back

(1,4), (2,5), (3,6)

zipping that with zip(*zipped_list) gives you back the two collections:

[(1, 2, 3), (4, 5, 6)]

More Related Contents:

  1. How to find all occurrences of an element in a list
  2. How to sort a list/tuple of lists/tuples by the element at a given index?
  3. How to merge lists into a list of tuples?
  4. Sort a list of tuples by 2nd item (integer value) [duplicate]
  5. Are tuples more efficient than lists in Python?
  6. How can I split a column of tuples in a Pandas dataframe?
  7. a mutable type inside an immutable container
  8. How to unzip a list of tuples into individual lists? [duplicate]
  9. Append to a list defined in a tuple – is it a bug? [duplicate]
  10. List of tuples to dictionary [duplicate]
  11. Explicitly select items from a list or tuple
  12. Converting a list of tuples into a dict
  13. Transform “list of tuples” into a flat list or a matrix
  14. How to use python numpy.savetxt to write strings and float number to an ASCII file?
  15. Python Array Slice With Comma?
  16. How to compare a list of lists/sets in python?
  17. Tuple or list when using ‘in’ in an ‘if’ clause?
  18. Find an element in a list of tuples
  19. How to convert list of tuples to multiple lists?
  20. How to convert list of numpy arrays into single numpy array?
  21. How to convert nested list of lists into a list of tuples in python 3.3?
  22. List of Tuples to DataFrame Conversion [duplicate]
  23. Numpy individual element access slower than for lists
  24. Index all *except* one item in python
  25. Why can’t I use a list as a dict key in python? Exactly what can and cannot be used, and why?
  26. python – get list of tuples first index?
  27. Filter a list of tuples based on condition
  28. How can I convert this string to list of lists? [duplicate]
  29. Elegant way to perform tuple arithmetic
  30. In what case would I use a tuple as a dictionary key? [closed]

Leave a Comment