Iterating over a 2 dimensional python list [duplicate]

Use zip and itertools.chain. Something like:

>>> from itertools import chain
>>> l = chain.from_iterable(zip(*l))
<itertools.chain object at 0x104612610>
>>> list(l)
['0,0', '1,0', '2,0', '0,1', '1,1', '2,1']

Related Posts:

  1. Python – TypeError: ‘int’ object is not iterable
  2. Why there is no do while loop in python
  3. Python – TypeError: ‘int’ object is not iterable
  4. Accessing the index in ‘for’ loops?
  5. How to make a flat list out of a list of lists
  6. What is the purpose of meshgrid in Python / NumPy?
  7. How does numpy.newaxis work and when to use it?
  8. How to avoid “RuntimeError: dictionary changed size during iteration” error?
  9. How to avoid “RuntimeError: dictionary changed size during iteration” error?
  10. How to count the occurrence of certain item in an ndarray?
  11. How to initialize a two-dimensional array in Python?
  12. Pythonic way to combine FOR loop and IF statement
  13. How to initialize a two-dimensional array in Python?
  14. Subplot for seaborn boxplot
  15. Create 3D array using Python
  16. How to have an array of arrays in Python
  17. Exit while loop in Python
  18. Two dimensional array in python
  19. Pythonic way to iterate through a range starting at 1
  20. Loop backwards using indices in Python?
  21. Understanding NumPy’s einsum
  22. Why does using from __future__ import print_function breaks Python2-style print?
  23. Breaking out of nested loops
  24. Is there a “do … until” in Python?
  25. Infinite for loops possible in Python?
  26. Good ways to “expand” a numpy ndarray?
  27. python: restarting a loop
  28. Using numpy to build an array of all combinations of two arrays
  29. Rotating a two-dimensional array in Python
  30. Convert a 1D array to a 2D array in numpy
  31. Python loop counter in a for loop
  32. Get a Try statement to loop around until correct value obtained
  33. Python: Continuing to next iteration in outer loop
  34. python base64 to hex
  35. What’s the canonical way to check for type in Python?
  36. IndexError: tuple index out of range —– Python
  37. What is the pythonic way to calculate dot product?
  38. How to resize an image with OpenCV2.0 and Python2.6
  39. Is there a ‘foreach’ function in Python 3?
  40. How to condense if/else into one line in Python?
  41. ‘builtin_function_or_method’ object is not iterable
  42. Why KeyError: 0
  43. bash: pip: command not found
  44. How do I concatenate two lists in Python?
  45. Convert a tensor to numpy array in Tensorflow?
  46. How to run Conda?
  47. How do I check whether a file exists without exceptions?
  48. How can I get dictionary key as variable directly in Python (not by searching from value)?
  49. pygame.error: video system not initialized
  50. Python – Reading and writing csv files with utf-8 encoding
  51. Python’s equivalent of && (logical-and) in an if-statement
  52. Remove all occurrences of a value from a list?
  53. os.path.dirname(__file__) returns empty
  54. keyerror 1 in my code
  55. ‘NoneType’ object has no attribute ‘group’
  56. How to fix ‘ValueError: list.remove(x): x not in list’ error in Python
  57. What is the difference between ‘/’ and ‘//’ when used for division?
  58. How do I format a string using a dictionary in python-3.x?
  59. How to extend a class in python?
  60. Converting XML to JSON using Python?
  61. Django – no such table exception
  62. How to import a module given the full path?
  63. Why does “pip install” inside Python raise a SyntaxError?
  64. Removing numbers from string
  65. importing external “.txt” file in python
  66. How can I remove Nan from list Python/NumPy
  67. Writing string to a file on a new line every time
  68. examining items in a python Queue
  69. What’s the difference between scikit-learn and tensorflow? Is it possible to use them together?
  70. How to initialize weights in PyTorch?
  71. Can’t find module cPickle using Python 3.5 and Anaconda
  72. How can I check if two segments intersect?
  73. “Can’t convert ‘float’ object to str implicitly”
  74. Python: “TypeError: __str__ returned non-string” but still prints to output?
  75. ImportError: No module named ‘django.core.urlresolvers’
  76. Numpy, multiply array with scalar
  77. Python 3: Multiply a vector by a matrix without NumPy
  78. How to fix “Can’t find a default Python” error
  79. TypeError: ‘newline’ is an invalid keyword argument for this function
  80. datetime to string with series in pandas
  81. Is it possible only to declare a variable without assigning any value in Python?
  82. How to Install pip for python 3.7 on Ubuntu 18?
  83. How to add a new row to an empty numpy array
  84. Change the name of a key in dictionary
  85. Check if an object exists
  86. How do I calculate the date six months from the current date using the datetime Python module?
  87. How to embed image or picture in jupyter notebook, either from a local machine or from a web resource?
  88. How to make a python script wait for a pressed key?
  89. TypeError: Image data can not convert to float
  90. Mean Squared Error in Numpy?
  91. Turn a single number into single digits Python
  92. Logical operators for Boolean indexing in Pandas
  93. Transposing a 1D NumPy array
  94. Explaining Python’s ‘__enter__’ and ‘__exit__’
  95. numpy.float64 object is not iterable…but I’m NOT trying to
  96. Converting a list to a set changes element order
  97. Create a list with initial capacity in Python
  98. Accessing dict_keys element by index in Python3
  99. How to update Pandas from Anaconda and is it possible to use eclipse with this last
  100. Does python support character type?

Leave a Comment

error code: 521