Using replace() method in python by index

The problem is that .replace(old, new) returns a copy of the string in which the occurrences of old have been replaced with new.

Instead, you can swap the character at index i using:

new_str = old_str[:i] + "b" + old_str[i+1:]

Related Posts:

  1. Renaming column names in Pandas
  2. Replace ‘ with \’ in a string
  3. TypeError: ‘float’ object is not subscriptable
  4. TypeError: ‘float’ object is not subscriptable
  5. Finding and replacing elements in a list
  6. Replace values in list using Python
  7. Best way to replace multiple characters in a string?
  8. Best way to replace multiple characters in a string?
  9. Replace and overwrite instead of appending
  10. How to replace multiple substrings of a string?
  11. Remove specific characters from a string in Python
  12. pandas replace multiple values one column
  13. Manually raising (throwing) an exception in Python
  14. sphinx.ext.autodoc: Keeping names of constants in signature
  15. How to define a two-dimensional array?
  16. Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)
  17. TypeError: list indices must be integers or slices, not str
  18. How to deal with SettingWithCopyWarning in Pandas
  19. How to deal with SettingWithCopyWarning in Pandas
  20. ‘Syntax Error: invalid syntax’ for no apparent reason
  21. How to iterate over rows in a DataFrame in Pandas
  22. What is the Python equivalent for a case/switch statement? [duplicate]
  23. Static methods in Python?
  24. IndentationError: unindent does not match any outer indentation level
  25. Purpose of “%matplotlib inline”
  26. Could not find a version that satisfies the requirement tensorflow
  27. How do you do natural logs (e.g. “ln()”) with numpy in Python?
  28. sklearn error ValueError: Input contains NaN, infinity or a value too large for dtype(‘float64’)
  29. What is print(f”…”)
  30. Convert Python dict into a dataframe
  31. re.sub erroring with “Expected string or bytes-like object”
  32. Python ValueError: too many values to unpack
  33. How do I select rows from a DataFrame based on column values?
  34. How to parse XML and count instances of a particular node attribute?
  35. Importing files from different folder
  36. How to prevent errno 32 broken pipe?
  37. AttributeError: ‘module’ object has no attribute ‘urlopen’
  38. Pandas group-by and sum
  39. Python pandas groupby aggregate on multiple columns, then pivot
  40. Factorial in numpy and scipy
  41. Why am I getting AttributeError: Object has no attribute?
  42. OSError [Errno 22] invalid argument when use open() in Python
  43. SBOX_FATAL_MEMORY_EXCEEDED error shown when Chromedriver turned 1800-1900 pages using Selenium
  44. Pinging servers in Python
  45. How can I use Python to get the system hostname?
  46. What is the difference between Anaconda and Pycharm?
  47. Add Legend to Seaborn point plot
  48. How to pass arguments to a Button command in Tkinter?
  49. How to remove specific substrings from a set of strings in Python?
  50. How do I install the yaml package for Python?
  51. Python: Array v. List
  52. What is key=lambda
  53. __init__() takes 1 positional argument but 2 were given
  54. Displaying better error message than “No JSON object could be decoded”
  55. How do I check if a string is a number (float)?
  56. How are Pipfile and Pipfile.lock used?
  57. Create a .csv file with values from a Python list
  58. Why matplotlib does not plot?
  59. Where do I call the BatchNormalization function in Keras?
  60. unittest Vs pytest
  61. Add single element to array in numpy
  62. ‘Can’t set attribute’ with new-style properties in Python
  63. How to check if a string is a substring of items in a list of strings?
  64. How to index into a dictionary?
  65. Spyder Not Launching
  66. How do I profile memory usage in Python?
  67. Wait until page is loaded with Selenium WebDriver for Python
  68. What is the meaning of ‘for _ in range()
  69. How do I check if there are duplicates in a flat list?
  70. Difference between scikit-learn and sklearn
  71. How can I create a text input box with Pygame?
  72. Convert string to ASCII value python
  73. “Divide by zero encountered in log” when not dividing by zero
  74. How to include external Python code to use in other files?
  75. How to print multiple lines of text with Python
  76. How to get a function name as a string?
  77. Substitution Cipher Python
  78. Good ways to “expand” a numpy ndarray?
  79. urllib and “SSL: CERTIFICATE_VERIFY_FAILED” Error
  80. Matplotlib plots: removing axis, legends and white spaces
  81. How do I disable a Pylint warning?
  82. UDP Client/Server Socket in Python
  83. How to write an inline-comment in Python
  84. Unable to resolve ‘requests’. IntelliSense may be missing for this module. Visual Studio/Python
  85. Purpose of #!/usr/bin/python3 shebang
  86. The view didn’t return an HttpResponse object. It returned None instead
  87. Python TypeError: ‘set’ object is not subscriptable
  88. Python and PYAML – yaml.scanner.ScannerError: mapping values are not allowed here
  89. ValueError: The channel sent is invalid on a Raspberry Pi – Controlling GPIO Pin 2 (BOARD) using Python causes Error
  90. How can I extract all values from a dictionary in Python?
  91. Handling a timeout error in python sockets
  92. Got continuous is not supported error in RandomForestRegressor
  93. RuntimeError: module compiled against API version 0xc but this version of numpy is 0xb
  94. ValueError: insecure string pickle
  95. ValueError: Must pass DataFrame with boolean values only
  96. Homebrew brew doctor warning about /Library/Frameworks/Python.framework, even with brew’s Python installed
  97. Undefined variable error in function
  98. Python: Continuing to next iteration in outer loop
  99. How to downgrade tensorflow, multiple versions possible?
  100. Installing Pylab/Matplotlib

Leave a Comment

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