Changing iteration variable inside for loop in Python [duplicate]

by

Python has a few nice things happening in the background of for loops.
For example:

for i in range(10):

will constantly set i to be the next element in the range 0-10 no matter what.

If you want to do the equivalent in python you would do:

i = 0
while i < 10:
    print(i)
    if i == 2:
        i = 4
    else:      # these line are
        i += 1 # the correct way
    i += 1 # note that this is wrong if you want 1,2,4,5,6,7,8,9

If you are trying to convert it to C then you have to remember that the i++ in the for loop will always add to the i.

More Related Contents:

  1. Combine two columns of text in pandas dataframe
  2. Python Ctypes – loading dll throws OSError: [WinError 193] %1 is not a valid Win32 application
  3. Creating a list of dictionaries results in a list of copies of the same dictionary
  4. Why do some functions have underscores “__” before and after the function name?
  5. On localhost, how do I pick a free port number?
  6. pip or pip3 to install packages for Python 3?
  7. Django ModelForm for Many-to-Many fields
  8. Expected conditions in protractor
  9. Python: changing methods and attributes at runtime
  10. How to merge two dataframes side-by-side?
  11. Finding index of nearest point in numpy arrays of x and y coordinates
  12. Where should I place the secret key in Flask?
  13. Requests failing to connect to a TLS server
  14. Celery Received unregistered task of type (run example)
  15. Pandas reset index on series to remove multiindex
  16. Running Python in PowerShell?
  17. pip/easy_install failure: failed to create process
  18. How to append to a JSON file in Python?
  19. How to convert a Date string to a DateTime object?
  20. Step-by-step debugging with IPython
  21. Python – calendar.timegm() vs. time.mktime()
  22. What’s the best way to format a phone number in Python?
  23. Running maximum of numpy array values
  24. Using Windows 7 taskbar features in PyQt
  25. Hypergraph with networkx
  26. Same name for classmethod and instancemethod
  27. UnicodeDecodeError when reading CSV file in Pandas
  28. First and last row cut in half of heatmap plot
  29. Run manage.py from AWS EB Linux instance
  30. How to perform filtering with a Django JSONField?

Leave a Comment