How to clear only last one line in python output console?

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I am trying to clear only last few line from output console window. To achieve this I have decided to use create stopwatch and I have achieved to interrupt on keyboard interrupt and on enter key press it creates lap but my code only create lap once and my current code is clearing whole output screen.

clear.py

import os
import msvcrt, time
from datetime import datetime
from threading import Thread

def threaded_function(arg):
    while True:
        input()

lap_count = 0
if __name__ == "__main__":
    # thread = Thread(target = threaded_function)
    # thread.start()
    try:
        while True:
            t = "{}:{}:{}:{}".format(datetime.now().hour, datetime.now().minute, datetime.now().second, datetime.now().microsecond)
            print(t)
            time.sleep(0.2)
            os.system('cls||clear') # I want some way to clear only previous line instead of clearing whole console
            if lap_count == 0:
                if msvcrt.kbhit():
                    if msvcrt.getwche() == '\r': # this creates lap only once when I press "Enter" key
                        lap_count += 1
                        print("lap : {}".format(t))
                        time.sleep(1)
                        continue            
    except KeyboardInterrupt:
        print("lap stop at : {}".format(t))
        print(lap_count)

when I run

%run <path-to-script>/clear.py 

in my ipython shell I am able to create only one lap but it is not staying for permanent.

To clear only a single line from the output :

print ("\033[A                             \033[A")

This will clear the preceding line and will place the cursor onto the beginning of the line. If you strip the trailing newline then it will shift to the previous line as \033[A means put the cursor one line up

How to delete the last printed line in Python language, Your next print will simply start from where the previous one started. For example: >>> import time; >>> def  You might have seen, there is no direct way or command to clear Python interpreter console. So you need a system call to clear the Python interpreter console screen. For window system, cls clear the console. For the Linux system, clear command works. We can use these system calls to clear screen in Python. It’s simple. To call system calls on the Python console, it requires the os library to be imported.

The codes shared by Ankush Rathi above this comment are probably correct, except for the use of parenthesis in the print command. I personally recommend doing it like this.

print("This message will remain in the console.")

print("This is the message that will be deleted.", end="\r")

One thing to keep in mind though is that if you run it in IDLE by pressing F5, the shell will still display both messages. However, if you run the program by double clicking, the ouput console will delete it. This might be the missunderstanding that happened with Ankush Rathi's answer. (In a previous post)

I hope this helps.

[Solved] Python Clear Output Console With Print Function , But how would one clear the output console using the print() function in python? debug python scripts in the blender game engine(version 2.68.0) last Instead of using print() , it might be easier to use a system call cls is Windows-only. http://forum.codecall.net/topic/59142-how-to-clear-the-console-  But how would one clear the output console using the print() function in python? I haven't the slightest clue how where to start with this question, but i do have the complete python reference for python 3.3.0 and yes, i do use python 3.3.0

If you intend to delete certain line from the console output,

print "I want to keep this line"
print "I want to delete this line",
print "\r " # this is going to delete previous line

or

print "I want to keep this line"
print "I want to delete this line\r "

How to clear screen in python?, Most of the time, while working with python interactive shell/terminal (not a console), we end up with a messy output and want to clear the screen for some reason. is used because python shell always stores its last output in an underscore). NOTE: You can also only “import os” instead of “from os import system” but with  Make a system call with ‘clear’ in Linux and ‘cls’ in Windows as an argument. Store the returned value in an underscore or whatever variable you want (an underscore is used because python shell always stores its last output in an underscore). Call the function we defined.

pdb — The Python Debugger, mymodule.py", line 3, in test2 print(spam) NameError: spam >>> pdb.pm() > . If given, header is printed to the console just before debugging begins. If no traceback is given, it uses the one of the exception that is currently being handled (an With a space separated list of breakpoint numbers, clear those breakpoints. While working on a question/answer program for school, it occurred to me that I can use Console.Clear() to wipe out everything on the screen. I wonder if I can use Console.Readline(valueOne), then output only the answer without the question. If I only asked one question, the Console.Clear works.

7.7. textwrap — Text wrapping and filling, Wraps the single paragraph in text (a string) so every line is at most width characters long. Returns a list of output lines, without final newlines. whitespaces and right after the hyphens in hyphenated words; only then will long words be An additional utility function, dedent() , is provided to remove indentation from strings  I was wondering if it was possible to remove items you have printed in Python - not from the Python GUI, but from the command prompt. e.g. a = 0 for x in range (0,3): a = a + 1 b = ("

15.11. curses, Curses Programming with Python Return the output speed of the terminal in bits per second. The curses library keeps two data structures, one representing the current Return True if the terminal has insert- and delete-line capabilities, or can Restore the state of the terminal modes to what it was at the last call to  Python console enables executing Python commands and scripts line by line, similar to your experience with Python Shell. Working with Python console The console appears as a tool window every time you choose the corresponding command on the Tools menu.

Comments
  • \r is printing new blank line instead of deleting previous line.
  • make previous line not to print a newline by putting a semicolon at the end, do you notice in the code ?
  • try writing your own code in infinite while loop or for loop and iterate multiple times you will see it's creating new line. As mentioned in tag I'm specific about python3
  • This is not deleting the line. It just moves the cursor to the beginning of the line. The contents will remain unless you write something else.