Overwriting/clearing previous console line
Question: My problem is, that I want to be able to overwrite/clear previous printed line
in python console. This question has been asked many times ([Python - Remove
and Replace Printed items](http://stackoverflow.com/questions/5290994/python-
remove-and-replace-printed-items) for example), however with the very same
code that is (the answer marked as correct, for me prints out nothing at all):

    
    
    for i in range(10):
        print("Loading" + "." * i)
        time.sleep(1)
        sys.stdout.write("\033[F") # Cursor up one line
        sys.stdout.write("\033[K") # Clear to the end of line
    

I get the output (In python IDLE) :

    
    
    Loading
    [F[KLoading.
    [F[KLoading..
    [F[KLoading...
    [F[KLoading....
    [F[KLoading.....
    [F[KLoading......
    [F[KLoading.......
    [F[KLoading........
    [F[KLoading.........
    [F[KLoading..........
    [F[K
    

Any ideas? I googled a lot, nothing works really. It either prints out nothing
or just does not overwrite.

If that helps, I am running windows 8.1 and Python 3.51. Running the code
trough cmd doesn't affect anything.

Also, adding `sys.stdout.flush()` does not help.


Answer: You need to run your program form the command line, not from within IDLE.

Then, this should work:

    
    
    import sys
    import time
    
    for i in range(10):
        sys.stdout.write("\r" + "Loading" + "." * i)
        time.sleep(1)
        sys.stdout.flush()
    print()
    

The `\r` goes to beginning of the line. So you have to make sure the string
you print is at least as long as the one before. Otherwise, you will see parts
of the previous print.

