What is the most efficient string concatenation method in Python?

by

You may be interested in this: An optimization anecdote by Guido. Although it is worth remembering also that this is an old article and it predates the existence of things like ''.join (although I guess string.joinfields is more-or-less the same)

On the strength of that, the array module may be fastest if you can shoehorn your problem into it. But ''.join is probably fast enough and has the benefit of being idiomatic and thus easier for other Python programmers to understand.

Finally, the golden rule of optimization: don’t optimize unless you know you need to, and measure rather than guessing.

You can measure different methods using the timeit module. That can tell you which is fastest, instead of random strangers on the Internet making guesses.

More Related Contents:

  1. How to find all occurrences of a substring?
  2. Python string interning
  3. Process escape sequences in a string in Python
  4. Why does substring slicing with index out of range work?
  5. What exactly does the .join() method do?
  6. Python: TypeError: cannot concatenate ‘str’ and ‘int’ objects [duplicate]
  7. Calculate cosine similarity given 2 sentence strings
  8. ‘str’ object does not support item assignment
  9. How can I print variable and string on same line in Python?
  10. Find longest repetitive sequence in a string
  11. Python string ‘join’ is faster (?) than ‘+’, but what’s wrong here?
  12. Extract Number from String in Python
  13. Python string ‘in’ operator implementation algorithm and time complexity
  14. replacing text in a file with Python
  15. How do I split a string into a list of characters?
  16. Short rot13 function – Python [closed]
  17. Convert Variable Name to String?
  18. Python – difference between two strings
  19. casting raw strings python [duplicate]
  20. Most pythonic way to interleave two strings
  21. Format string unused named arguments [duplicate]
  22. Replace part of a string in Python?
  23. Why doesn’t calling a string method (such as .replace) modify (mutate) the string? Why doesn’t it change unless I assign the result?
  24. Formatting long numbers as strings
  25. Inserting the same value multiple times when formatting a string
  26. Adding a string to a list using augmented assignment
  27. How can I interleave or create unique permutations of two strings (without recursion)
  28. How to create raw string from string variable in python?
  29. How to use str.contains() with multiple expressions in pandas dataframes
  30. How does str(list) work?

Leave a Comment