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I want input data in python but while inputting data,on the right side must be output for example, kilogram:

simple code:

weight = float(input('Enter your weight: (kg)'))

Output:

Enter your weight: some_number (kg)

I want that kg stands always on right side of number while inputting data. I think question is clear if something not please let me know.Thank you in advance!

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    You can print your prompt, some spaces and "kg" and then move the cursor back to those spaces. Test this and adjust your string: print("aaaaaaaaaaaaaa\r\tbb") - \r is \carriage return\ which gets you back to the beginning(!) of the current line, \t is a tab character. Commented Aug 1, 2019 at 10:16
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    @h4z3 do note that if you are using something like pycharm, the console window is emulated so it wont show up correctly Commented Aug 1, 2019 at 10:21
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    Possible duplicate of Python: How do I get user input in the middle of a sentence (fill-in-the-blank style) using the input function? Commented Aug 1, 2019 at 10:23
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    why can't you just put the units in you input like this weight = float(input('Enter your weight (kg): '))? Commented Aug 1, 2019 at 10:31
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    in console's programs it is natural to have (kg) on left before : - Enter your weight (kg): some_number. Commented Aug 1, 2019 at 10:39

1 Answer 1

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If you dig around, you'll find various versions of something called getch. This uses code from py-getch:

import sys try: from msvcrt import getch except ImportError: def getch(): import tty import termios fd = sys.stdin.fileno() old = termios.tcgetattr(fd) try: tty.setraw(fd) return sys.stdin.read(1) finally: termios.tcsetattr(fd, termios.TCSADRAIN, old) ascii_numbers = [ord('0') + x for x in range(10)] weight = 0.0 while True: message = f"Enter your weight: {weight:9.2f} (kg)" sys.stdout.write("\r" + message) sys.stdout.flush() c = ord(getch()) if c == 13: break elif c in ascii_numbers: c = c - ord('0') weight = (weight * 10) + (float(c) / 100) elif c == 127: weight = weight / 10 print("")

This is ugly, but my last experience with ncurses was even uglier.

Warning

This program ignores Ctrl-C inside the getch call. It is possible to modify this code so that the only way to stop the program is to kill the process. Sorry.

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