How to copy a dictionary and only edit the copy

Can someone please explain this to me? This doesn’t make any sense to me.

I copy a dictionary into another and edit the second and both are changed. Why is this happening?

>>> dict1 = {"key1": "value1", "key2": "value2"}
>>> dict2 = dict1
>>> dict2
{'key2': 'value2', 'key1': 'value1'}
>>> dict2["key2"] = "WHY?!"
>>> dict1
{'key2': 'WHY?!', 'key1': 'value1'}

Related Posts:

  1. Updating a dictionary in python
  2. TypeError: ‘type’ object is not subscriptable when indexing in to a dictionary
  3. Error: ” ‘dict’ object has no attribute ‘iteritems’ “
  4. Error: ” ‘dict’ object has no attribute ‘iteritems’ “
  5. Are dictionaries ordered in Python 3.6+?
  6. enumerate() for dictionary in python
  7. How do I format a string using a dictionary in python-3.x?
  8. How to return dictionary keys as a list in Python?
  9. How to save a dictionary to a file?
  10. TypeError: ‘dict_keys’ object does not support indexing
  11. What is an easy way to implement fprintf in python?
  12. Accessing dict_keys element by index in Python3
  13. Iterating over dictionary items(), values(), keys() in Python 3
  14. How to use filter, map, and reduce in Python 3
  15. Praw & Discord.py: The bot keep sending the same meme. I want the bot to send different meme whenever it is asked
  16. Iterating over dictionaries using ‘for’ loops
  17. How do I sort a dictionary by value?
  18. How do I sort a dictionary by value?
  19. How to uninstall a package installed with pip install –user
  20. List changes unexpectedly after assignment. Why is this and how can I prevent it?
  21. How is Anaconda related to Python?
  22. FileNotFoundError: [WinError 2] The system cannot find the file specified:
  23. How do I merge two dictionaries in a single expression (taking union of dictionaries)?
  24. How to correct TypeError: Unicode-objects must be encoded before hashing?
  25. How to install python3 version of package via pip on Ubuntu?
  26. unhashable type: ‘dict’ Type Error [duplicate]
  27. Local variable referenced before assignment?
  28. Can’t fix “zipimport.ZipImportError: can’t decompress data; zlib not available” when I type in “python3.6 get-pip.py”
  29. ‘method’ object is not subscriptable. Don’t know what’s wrong
  30. NameError: global name ‘xrange’ is not defined in Python 3
  31. What does “SyntaxError: Missing parentheses in call to ‘print'” mean in Python?
  32. TypeError: Missing 1 required positional argument: ‘self’
  33. What is __pycache__?
  34. What is __pycache__?
  35. How can I remove a key from a Python dictionary?
  36. TypeError: can’t use a string pattern on a bytes-like object in re.findall()
  37. How to install pip3 on Windows?
  38. Python Setup Disabling Path Length Limit Pros and Cons?
  39. Type error: cannot convert the series to
  40. What is the purpose of “pip install –user …”?
  41. How to remove punctuation marks from a string in Python 3.x using .translate()?
  42. Subplot for seaborn boxplot
  43. Infinite integer in Python
  44. Why Python 3.6.1 throws AttributeError: module ‘enum’ has no attribute ‘IntFlag’?
  45. Creating 2D dictionary in Python
  46. Converting Dictionary to List?
  47. How to use sys.exit() in Python
  48. installing urllib in Python3.6
  49. What is sys.maxint in Python 3?
  50. How can I get list of values from dict?
  51. Python: can’t assign to literal
  52. “Initializing” variables in python?
  53. Difference between except: and except Exception as e:
  54. “Unicode Error “unicodeescape” codec can’t decode bytes… Cannot open text files in Python 3
  55. How to downgrade python from 3.7 to 3.6
  56. Youtube_dl : ERROR : YouTube said: Unable to extract video data
  57. Using Look Up Tables in Python
  58. Anaconda Installed but Cannot Launch Navigator
  59. ImportError: No module named ‘yaml’
  60. How do I print the key-value pairs of a dictionary in python
  61. ImportError: No module named ‘cv2’ Python3
  62. Appending values to dictionary in Python
  63. Django Rest Framework — no module named rest_framework
  64. Unsupported operation :not writeable python
  65. Object of type ‘map’ has no len() in Python 3
  66. Python Add to dictionary loop
  67. how to exit a python script in an if statement
  68. AttributeError: ‘str’ object has no attribute ‘items’
  69. How to fix ‘RuntimeWarning: divide by zero encountered in double_scalars’
  70. What does {0} mean in this Python string?
  71. Tab Error in Python
  72. Not able to pip install pickle in python 3.6
  73. Using unicode character u201c
  74. convert csv file to list of dictionaries
  75. Decode Hex String in Python 3
  76. Declaring a multi dimensional dictionary in python
  77. built-in range or numpy.arange: which is more efficient?
  78. python-How to solve KeyError: 2?
  79. Printing subscript in python
  80. How to search through dictionaries?
  81. How to clear Tkinter Canvas?
  82. TypeError: ‘range’ object does not support item assignment
  83. What is the meaning of “int(a[::-1])” in Python?
  84. install csv package in pycharm
  85. dump() missing 1 required positional argument: ‘fp’ in python json
  86. Meaning of list[-1] in Python
  87. TypeError: module.__init__() takes at most 2 arguments (3 given)
  88. Tkinter error: Couldn’t recognize data in image file
  89. How to install Openpyxl with pip
  90. Python cant convert ‘list’ object to str error [closed]
  91. Generate a random letter in Python
  92. What’s the correct way to convert bytes to a hex string in Python 3?
  93. During handling of the above exception, another exception occurred
  94. Error loading MySQLdb module: No module named ‘MySQLdb’
  95. ‘module’ has no attribute ‘urlencode’
  96. Python-3.2 coroutine: AttributeError: ‘generator’ object has no attribute ‘next’
  97. How to install PyQt4 on Windows using pip?
  98. How to install PyQt4 on Windows using pip?
  99. python dictionary error AttributeError: ‘list’ object has no attribute ‘keys’
  100. Convert list of dictionaries to a pandas DataFrame

Leave a Comment