What is the difference between range and xrange functions in Python 2.X?

In Python 2.x:

  • range creates a list, so if you do range(1, 10000000) it creates a list in memory with 9999999 elements.
  • xrange is a sequence object that evaluates lazily.

In Python 3:

  • range does the equivalent of Python 2’s xrange. To get the list, you have to explicitly use list(range(...)).
  • xrange no longer exists.

Related Posts:

  1. what does +=, -=, *= and /= stand for in Python?
  2. NameError: global name ‘xrange’ is not defined in Python 3
  3. Name ‘xrange’ is not defined in Python 3 [duplicate]
  4. Traverse a list in reverse order in Python
  5. When to use “while” or “for” in Python
  6. python “TypeError: ‘numpy.float64’ object cannot be interpreted as an integer”
  7. Python – TypeError: ‘int’ object is not iterable
  8. Why there is no do while loop in python
  9. What is the difference between rw+ and r+
  10. Python – TypeError: ‘int’ object is not iterable
  11. Accessing the index in ‘for’ loops?
  12. Python division
  13. Accessing the index in ‘for’ loops?
  14. raw_input function in Python
  15. Safest way to convert float to integer in python?
  16. How to avoid “RuntimeError: dictionary changed size during iteration” error?
  17. How to avoid “RuntimeError: dictionary changed size during iteration” error?
  18. Print a list in reverse order with range()?
  19. write() versus writelines() and concatenated strings
  20. How to iterate over a JavaScript object?
  21. No module named MySQLdb
  22. No module named MySQLdb
  23. How do you use subprocess.check_output() in Python?
  24. How can I concatenate str and int objects?
  25. Pythonic way to combine FOR loop and IF statement
  26. Subplot for seaborn boxplot
  27. How do you use subprocess.check_output() in Python?
  28. What does `<>` mean in Python?
  29. Exit while loop in Python
  30. While Loop in Mips (New to Mips)
  31. Pythonic way to iterate through a range starting at 1
  32. Pop index out of range
  33. While, Do While, For loops in Assembly Language (emu8086)
  34. Angular 2 Cannot find control with unspecified name attribute on formArrays
  35. Loop backwards using indices in Python?
  36. Why does using from __future__ import print_function breaks Python2-style print?
  37. Guess a number program with Java
  38. Python – ‘ascii’ codec can’t decode byte
  39. How to return dictionary keys as a list in Python?
  40. UnicodeEncodeError: ‘ascii’ codec can’t encode character u’\xa0′ in position 20: ordinal not in range(128)
  41. Breaking out of nested loops
  42. Is there a “do … until” in Python?
  43. Iterating over a 2 dimensional python list [duplicate]
  44. Infinite for loops possible in Python?
  45. Using multiple variables in a for loop in Python
  46. python: restarting a loop
  47. Python, Matplotlib, subplot: How to set the axis range?
  48. range() for floats
  49. What is the best way of determining a loop invariant?
  50. Why does Lua have no “continue” statement?
  51. built-in range or numpy.arange: which is more efficient?
  52. TypeError: super() takes at least 1 argument (0 given) error is specific to any python version?
  53. How do you write code to do factorials in MIPS?
  54. Python loop counter in a for loop
  55. Get a Try statement to loop around until correct value obtained
  56. What exactly do “u” and “r” string flags do, and what are raw string literals?
  57. Determine if 2 lists have the same elements, regardless of order? [duplicate]
  58. Printing from a declared array in MIPS
  59. Using print() (the function version) in Python2.x
  60. Python: Continuing to next iteration in outer loop
  61. How to read a CSV file from a URL with Python?
  62. How to import a csv-file into a data array?
  63. SyntaxError: unexpected EOF while parsing
  64. How do I lowercase a string in Python?
  65. How do I copy a file in Python?
  66. How can I reverse a list in Python?
  67. Manually raising (throwing) an exception in Python
  68. How do I copy a file in Python?
  69. can’t multiply sequence by non-int of type ‘float’
  70. Difference between del, remove, and pop on lists
  71. How can I reverse a list in Python?
  72. How to use the pass statement
  73. How to use filter, map, and reduce in Python 3
  74. What does enumerate() mean?
  75. Searching the student-t distribution table for values using python
  76. How to declare an array in Python?
  77. Does Python have a ternary conditional operator?
  78. For-each over an array in JavaScript
  79. Use Gif Logo For Loading Screen In Kivy
  80. Praw & Discord.py: The bot keep sending the same meme. I want the bot to send different meme whenever it is asked
  81. Pig Latin Translator
  82. What is the difference between Python’s list methods append and extend?
  83. How can I make a time delay in Python? [duplicate]
  84. TypeError: ‘int’ object is not subscriptable
  85. sphinx.ext.autodoc: Keeping names of constants in signature
  86. are there dictionaries in javascript like python?
  87. How do you round UP a number?
  88. Understanding slice notation
  89. Iterating over dictionaries using ‘for’ loops
  90. How to define a two-dimensional array?
  91. how to sort pandas dataframe from one column
  92. Why am I seeing “TypeError: string indices must be integers”?
  93. Understanding the main method of python [duplicate]
  94. How do you round UP a number?
  95. Understanding slice notation
  96. TypeError: only integer scalar arrays can be converted to a scalar index with 1D numpy indices array
  97. How do I update\upgrade pip itself from inside my virtual environment?
  98. How to open a file using the open with statement
  99. How to emulate a do-while loop?
  100. TypeError: only integer scalar arrays can be converted to a scalar index with 1D numpy indices array

Leave a Comment

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)