log2 in python math module

why doesn’t it exist?

import math

[x for x in dir(math) if ‘log’ in x]

>>> [‘log’, ‘log10’, ‘log1p’]

I know I can do log(x,2), but log2 is really common, so I’m kind of baffled.

Oh, it looks like it’s only defined in C99, not C90, I guess that answers my question. Still seems kind of silly.

Related Posts:

  1. numpy max vs amax vs maximum
  2. What do these operators mean (** , ^ , %, //)? [closed]
  3. What do these operators mean (** , ^ , %, //)? [closed]
  4. syntaxerror: “unexpected character after line continuation character in python” math
  5. TypeError: ‘float’ object is not callable
  6. Error: all the input array dimensions except for the concatenation axis must match exactly
  7. How do order of operations go on Python?
  8. What does numpy.gradient do?
  9. Python: OverflowError: math range error
  10. How can I use numpy.correlate to do autocorrelation?
  11. How can I convert radians to degrees with Python?
  12. Infinite integer in Python
  13. Overflow / math range error for log or exp
  14. How do I find the distance between two points?
  15. How can I check for NaN values?
  16. Python – how to use the constant e^
  17. What is the difference between ‘/’ and ‘//’ when used for division?
  18. How can I check for NaN values?
  19. How can I check if two segments intersect?
  20. python math domain errors in math.log function
  21. How to fix ‘RuntimeWarning: divide by zero encountered in double_scalars’
  22. Is there a math nCr function in python?
  23. How do I compute derivative using Numpy?
  24. Is there a math nCr function in python? [duplicate]
  25. Function to determine if two numbers are nearly equal when rounded to n significant decimal digits
  26. Import Error: No module named numpy
  27. bash: pip: command not found
  28. Function for Factorial in Python
  29. TypeError: a bytes-like object is required, not ‘str’ when writing to a file in Python3
  30. Writing a pandas DataFrame to CSV file
  31. Purpose of “%matplotlib inline”
  32. How do I update Anaconda?
  33. TypeError: ‘str’ object is not callable (Python)
  34. Dijkstra’s algorithm in python
  35. OSError: [WinError 193] %1 is not a valid Win32 application
  36. How to download a file over HTTP?
  37. Can’t fix “zipimport.ZipImportError: can’t decompress data; zlib not available” when I type in “python3.6 get-pip.py”
  38. Arrays used as indices must be of integer (or boolean) type
  39. Are static class variables possible in Python?
  40. Why am I getting “LinAlgError: Singular matrix” from grangercausalitytests?
  41. ‘method’ object is not subscriptable. Don’t know what’s wrong
  42. Get total of Pandas column
  43. How do you read from stdin?
  44. Union of two lists in Python
  45. Type error: cannot convert the series to
  46. Reading a binary file with python
  47. How to determine a Python variable’s type?
  48. Could not find a version that satisfies the requirement
  49. Removing Conda environment
  50. Cannot convert list to array: ValueError: only one element tensors can be converted to Python scalars
  51. Pandas – DataFrame object is not callable
  52. Start with pyglet or pygame?
  53. Django 2.1.3 Error: __init__() takes 1 positional argument but 2 were given
  54. Python error load JSON code of google API
  55. How to convert IPython notebooks to PDF and HTML?
  56. ‘Jupyter’ is not recognized as an internal or external command
  57. How to print spaces in Python?
  58. installing urllib in Python3.6
  59. What is sys.maxint in Python 3?
  60. How do you get the magnitude of a vector in Numpy?
  61. Finding all possible permutations of a given string in python
  62. Difference between scikit-learn and sklearn
  63. How can I create a text input box with Pygame?
  64. How can I print variable and string on same line in Python?
  65. SettingWithCopyWarning even when using .loc[row_indexer,col_indexer] = value
  66. Append a tuple to a list – what’s the difference between two ways?
  67. No module named Image
  68. How to fix “TypeError: len() of unsized object”
  69. ValueError: Unknown projection ‘3d’ (once again)
  70. Substitution Cipher Python
  71. Good ways to “expand” a numpy ndarray?
  72. Python data structure sort list alphabetically
  73. TypeError: ‘numpy.float64’ object does not support item assignment
  74. TypeError: unsupported format string passed to list.__format__
  75. Getting “socket.error: [Errno 61] Connection refused” python paramiko
  76. python setup.py uninstall
  77. Create numpy matrix filled with NaNs
  78. python pandas remove duplicate columns
  79. What is the difference between __str__ and __repr__?
  80. How often does python flush to a file?
  81. How to open every file in a folder
  82. Python iteration over non-sequence
  83. How do I convert a string to a double in Python?
  84. _csv.Error: field larger than field limit (131072)
  85. How do I rotate an image around its center using Pygame?
  86. How can I copy a Python string?
  87. How to completely uninstall python 2.7.13 on Ubuntu 16.04
  88. Calculate weighted average using a pandas/dataframe
  89. Telling Python to save a .txt file to a certain directory on Windows and Mac
  90. Spell Checker for Python
  91. TypeError: coercing to Unicode: need string or buffer, int found
  92. Simplify Chained Comparison
  93. How to get POSTed JSON in Flask?
  94. How to fix SSL issue SSL_CTX_use_certificate : ca md too weak on Python Zeep
  95. Paramiko’s SSHClient with SFTP
  96. Package libffi was not found in the pkg-config search path REDHAT6.5
  97. Line is too long. Django PEP8
  98. TypeError: zip argument #2 must support iteration
  99. CS231n: How to calculate gradient for Softmax loss function?
  100. How to create a new database using SQLAlchemy?

Leave a Comment