Multiple input() statements skip lines

Question

I'm using python 3.5.1 and I've had this problem with a few scripts. When I have multiple input() lines in a row, the ipython window will skip lines in between them. Here's my code:

def DMScalc(D, M, S):
    if D < 0.:
        DD = D + M*(-1)/60 + S*(-1)/3600
    else:
        DD = D + M/60 + S/3600
    return DD

print("\nConvert Degrees-Minutes-Seconds to Decimal Degrees")
D = float(input("Degrees: "))
M = float(input("Minutes: "))
S = float(input("Seconds: "))
print('Decimal Degrees:', end=' ')
print(DMScalc(D, M, S))

The ipython window shows the following:

Convert Degrees-Minutes-Seconds to Decimal Degrees

Degrees: 33

Minutes: 29

Seconds: 38
Decimal Degrees: 33.49388888888889

I'd like to remove the skipped lines above Degrees, Minutes, and Seconds so the end result is this:

Convert Degrees-Minutes-Seconds to Decimal Degrees
Degrees: 33
Minutes: 29
Seconds: 38
Decimal Degrees: 33.49388888888889

I checked the documentation for input() and it only talks about a trailing newline, which I don't think is the problem here.

Cannot reproduce with python 3.5.1 on windows. I tried `python script.py` and `ipython script.py`. None added additional newlines. How did you start your script? — Wombatz, Jul 15 '16 at 16:03
@Wombatz I edited the post to include my entire script. Also, I'm using Spyder IDE if that makes a difference. — Carson, Jul 15 '16 at 19:34
I can't reproduce using python 3.5.1 and ipython 5 on Arch Linux. It's probably Spyder IDE — Wayne Werner, Jul 15 '16 at 19:39
Yeah, just tried it via command line and it doesn't produce the blank lines -- must be Spyder. — Carson, Jul 15 '16 at 19:44

Elvis Teixeira · Answer 1 · 2016-07-15T19:44:40.350

0

With the input() function alone you can't.

Try the Curses library so you can take more control of terminal behaviour, because input() will always give you a new line.

edited Jul 15 '16 at 19:44

answered Jul 15 '16 at 19:38

Elvis Teixeira

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4
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How does this answer the OPs question? – Wayne Werner Jul 15 '16 at 19:41
The issue is that the new line that appears in not Python's issue. It is the terminal emulator that inserts it when he presses enter anter inserting some input. – Elvis Teixeira Jul 15 '16 at 19:43
I'm not sure how curses is really going to help within IPython and Spyder. – Wayne Werner Jul 15 '16 at 19:46
Hm yes your'e right, it's useless in IPython's console. I'm sorry. – Elvis Teixeira Jul 15 '16 at 19:55

score 0 · Answer 2 · answered Dec 07 '18 at 02:28

Carlos Cordoba, a Spyder developer, says this is a bug in their IPython console, see here:

How can I prevent Python from inserting a new line after taking user input?

You might check their Github repo to see if it has been fixed.

Here's the issue page if you're curious: https://github.com/jupyter/qtconsole/issues/262

Multiple input() statements skip lines

2 Answers2