How to use “raise” keyword in Python [duplicate]

by

It has two purposes.

jackcogdill has given the first one:

It’s used for raising your own errors.

if something:
   raise Exception('My error!')

The second is to reraise the current exception in an exception handler, so that it can be handled further up the call stack.

try:
  generate_exception()
except SomeException as e:
  if not can_handle(e):
    raise
  handle_exception(e)

More Related Contents:

  1. Normal arguments vs. keyword arguments
  2. Passing a dictionary to a function as keyword parameters
  3. Best practice for using assert?
  4. How to add builtin functions?
  5. How do I use a keyword as a variable name?
  6. Don’t show Python raise-line in the exception stack
  7. Finding words after keyword in python [duplicate]
  8. How to re-raise an exception in nested try/except blocks?
  9. Python: SyntaxError: keyword can’t be an expression
  10. raise statement on a conditional expression
  11. Why were True and False changed to keywords in Python 3
  12. how to merge a number of lists in to one list [duplicate]
  13. How do I print curly-brace characters in a string while using .format?
  14. Parsing XML with namespace in Python via ‘ElementTree’
  15. TypeError: ‘list’ object is not callable in python
  16. Sqlite / SQLAlchemy: how to enforce Foreign Keys?
  17. Python: URLError:
  18. Append to a list defined in a tuple – is it a bug? [duplicate]
  19. Difference between Variable and get_variable in TensorFlow
  20. converting string to tuple
  21. How to continuously prompt for user input?
  22. How to plot a chart in the terminal
  23. Python – Find dominant/most common color in an image
  24. What is the difference between calling function with parentheses and without in python? [duplicate]
  25. Python/PIL Resize all images in a folder
  26. Python serializable objects json [duplicate]
  27. Python regex: matching a parenthesis within parenthesis
  28. sys.stdin.readline() and input(): which one is faster when reading lines of input, and why?
  29. Webdriver Screenshot
  30. Pandas data frame to dictionary of lists

Leave a Comment