What does the “at” (@) symbol do in Python?

An @ symbol at the beginning of a line is used for class, function and method decorators.

Read more here:

PEP 318: Decorators

Python Decorators

The most common Python decorators you’ll run into are:

@property

@classmethod

@staticmethod

If you see an @ in the middle of a line, that’s a different thing, matrix multiplication. See this answer showing the use of @ as a binary operator.

Related Posts:

  1. What does “while True” mean in Python?
  2. What is the difference between {} and [] in python?
  3. syntaxerror: “unexpected character after line continuation character in python” math
  4. How do you express binary literals in Python?
  5. Can someone explain __all__ in Python?
  6. How to exit a loop in Python?
  7. How can I do a line break (line continuation) in Python?
  8. What does the /= operator mean in Python?
  9. What do >> and << mean in Python?
  10. Is there a difference between `continue` and `pass` in a for loop in python?
  11. What does `<>` mean in Python?
  12. What is :: (double colon) in Python when subscripting sequences?
  13. What’s the u prefix in a Python string?
  14. Python def function: How do you specify the end of the function?
  15. No Multiline Lambda in Python: Why not?
  16. What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
  17. Python integer incrementing with ++ [duplicate]
  18. What is the result of % in Python?
  19. What’s the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?
  20. IndentationError: unexpected indent error
  21. Putting a simple if-then-else statement on one line [duplicate]
  22. How can I do a line break (line continuation)?
  23. How do you comment out code in PowerShell?
  24. How do I break a string in YAML over multiple lines?
  25. What does ‘&’ do in a C++ declaration?
  26. syntaxerror: “unexpected character after line continuation character in python” math
  27. syntaxerror: “unexpected character after line continuation character in python” math
  28. `from … import` vs `import .` [duplicate]
  29. Tab space in Markdown
  30. syntax error when using command line in python
  31. In JavaScript is != same as !==
  32. How does the @property decorator work in Python?
  33. What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
  34. syntax error when using command line in python
  35. What Does This Mean in PHP -> or =>
  36. Comments in Markdown
  37. How do I pass multiple parameters into a function in PowerShell?
  38. Comments in Markdown
  39. What is the difference between syntax and semantics in programming languages?
  40. Python: SyntaxError: keyword can’t be an expression
  41. What do << or >>> in java mean?
  42. What is the Java ?: operator called and what does it do?
  43. How do I convert a float number to a whole number in JavaScript?
  44. hat does “static” mean in C?
  45. How to normalize a 2-dimensional numpy array in python less verbose?
  46. Ternary operator (?:) in Bash
  47. SyntaxError invalid token
  48. What is the difference between ‘/’ and ‘//’ when used for division?
  49. Is there a difference between x++ and ++x in java?
  50. Printing variables in Python 3.4
  51. What does the “@” symbol do in PowerShell?
  52. Static Semantics meaning?
  53. What does the `and` keyword mean in OCaml?
  54. text highlight in markdown
  55. Error “‘type’ object has no attribute ‘__getitem__'” when iterating over list[“a”,”b”,”c”]
  56. Inline for loop
  57. What does ‘wb’ mean in this code, using Python?
  58. What does @@variable mean in Ruby?
  59. Python def marked as invalid syntax
  60. How do you format an unsigned long long int using printf?
  61. What are those pipe symbols for in Ruby?
  62. bash: syntax error near unexpected token `(‘ – Python
  63. Prolog “or” operator, query
  64. TypeError: ‘builtin_function_or_method’ object is not subscriptable
  65. numpy max vs amax vs maximum
  66. TypeError: ‘str’ object is not callable (Python)
  67. Converting string into datetime
  68. TypeError: ‘float’ object not iterable
  69. write() versus writelines() and concatenated strings
  70. Why is it string.join(list) instead of list.join(string)?
  71. Importing class from another file [duplicate]
  72. Pandas group-by and sum
  73. Grep and Python
  74. What does the percentage sign mean in Python
  75. Pandas ‘count(distinct)’ equivalent
  76. How can I flush the output of the print function?
  77. Python calling method in class
  78. No module named pkg_resources
  79. Opening a .ipynb.txt File
  80. How can I download Anaconda for python 3.6
  81. django:django.core.exceptions.AppRegistryNotReady: Apps aren’t loaded yet
  82. Replace and overwrite instead of appending
  83. module ‘pandas’ has no attribute ‘rolling_mean’
  84. Type error Unhashable type:set
  85. Saving a Numpy array as an image
  86. Can a URL contain a semicolon and still be valid?
  87. ValueError: zero length field name in format in Python2.6.6
  88. Python NameError, variable ‘not defined’
  89. Cannot import cv2 in python in OSX
  90. numpy-equivalent of list.pop?
  91. Disable / Enable Button in TKinter
  92. Python: Pandas pd.read_excel giving ImportError: Install xlrd >= 0.9.0 for Excel support
  93. How do I find the time difference between two datetime objects in python?
  94. Installing scipy for python 2.7
  95. Installing MySQL-python causes command ‘clang’ failed with exit status 1 on Mac OS 10.13.15
  96. Get difference between two lists
  97. how to build .exe for python 3.5+, 3.6 if possible?
  98. How to download a file via FTP with Python ftplib
  99. How do I restart a program based on user input?
  100. Python Pandas : pivot table with aggfunc = count unique distinct

Leave a Comment

tech