How can I read large text files line by line, without loading it into memory?

by

I provided this answer because Keith’s, while succinct, doesn’t close the file explicitly

with open("log.txt") as infile:
    for line in infile:
        do_something_with(line)

More Related Contents:

  1. How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples greater than lists?
  2. What is the best way to remove accents (normalize) in a Python unicode string?
  3. How to run multiple Python versions on Windows
  4. How to get string objects instead of Unicode from JSON?
  5. Taking multiple integers on the same line as input from the user in python
  6. Match text between two strings with regular expression
  7. What exactly do “u” and “r” string prefixes do, and what are raw string literals?
  8. What is the difference between dict.items() and dict.iteritems() in Python2?
  9. Python unexpected EOF while parsing
  10. Why does Python print unicode characters when the default encoding is ASCII?
  11. Why is ” > 0 True in Python 2?
  12. How to use a multiprocessing.Manager()?
  13. Converting “yield from” statement to Python 2.7 code
  14. Using print() (the function version) in Python2.x
  15. What is the difference between encode/decode?
  16. Defining “boolness” of a class in python
  17. How can I get 2.x-like sorting behaviour in Python 3.x?
  18. How to print a percentage value in python?
  19. Safest way to convert float to integer in python?
  20. Python ascii utf unicode
  21. How to select a directory and store the location using tkinter in Python
  22. Determine if 2 lists have the same elements, regardless of order? [duplicate]
  23. How to read a CSV file from a URL with Python?
  24. Command-line input causes SyntaxError
  25. TypeError: super() takes at least 1 argument (0 given) error is specific to any python version?
  26. SQLite, python, unicode, and non-utf data
  27. IndentationError: unindent does not match any outer indentation level, although the indentation looks correct
  28. Python long filename support broken in Windows
  29. ImportError: DLL load failed: %1 is not a valid Win32 application for Python Matplotlib
  30. How can I denote unused function arguments?

Leave a Comment