What is the best way to iterate over multiple lists at once? [duplicate]

by

The usual way is to use zip():

for x, y in zip(a, b):
    # x is from a, y is from b

This will stop when the shorter of the two iterables a and b is exhausted. Also worth noting: itertools.izip() (Python 2 only) and itertools.izip_longest() (itertools.zip_longest() in Python 3).

More Related Contents:

  1. re.findall behaves weird
  2. Iterating over every two elements in a list [duplicate]
  3. Understanding the “is” operator
  4. Plotting with seaborn using the matplotlib object-oriented interface
  5. error UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xff in position 0: invalid start byte
  6. Check if a word is in a string in Python
  7. What is the difference between contiguous and non-contiguous arrays?
  8. Does Python SciPy need BLAS?
  9. Is there any simple way to benchmark Python script?
  10. Pythonic way to create union of all values contained in multiple lists
  11. Python Script execute commands in Terminal [duplicate]
  12. Call Python script from bash with argument
  13. How to save a list to a file and read it as a list type?
  14. Why won’t dynamically adding a `__call__` method to an instance work?
  15. How do I read and write with msgpack?
  16. Django values_list vs values
  17. Pip freeze vs. pip list
  18. Selenium using too much RAM with Firefox
  19. Determine complete Django url configuration
  20. Using Scrapy with authenticated (logged in) user session
  21. How do I remove the background from this kind of image?
  22. Plural String Formatting
  23. MatPlotLib: Multiple datasets on the same scatter plot
  24. Python: Can a subclass of float take extra arguments in its constructor?
  25. Do comments slow down an interpreted language?
  26. Python: high precision time.sleep
  27. Finding the most frequent character in a string
  28. How to find exit code or reason when atexit callback is called in Python?
  29. Import Python module from memory [duplicate]
  30. I want to let my Discord Bot send images/gifs

Leave a Comment