Python Python 3.14.0a4 broken "input" function in OS GNU/Linux terminals

[snooppr]

Bug report

Bug description:

GNU/Linux 5.4.19 x86_64 GNU/Linux
python 3.14.0a4
echo $TERM
xterm-256color
stty -a
speed 38400 baud; rows 24; columns 80; line = 0;
intr = ^C; quit = ^; erase = ^?; kill = ^U; eof = ^D; eol = ;
eol2 = ; swtch = ; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
werase = ^W; lnext = ^V; discard = ^O; min = 1; time = 0;
-parenb -parodd -cmspar cs8 -hupcl -cstopb cread -clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff
-iuclc -ixany -imaxbel iutf8
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt
echoctl echoke -flusho -extproc

---

If you copy any text to the clipboard, for example, a URL from a browser, and paste it into the terminal, the paste occurs with a control sequence, which is not cut off later.

$ python program.py

url = input("Enter url: ")

print("\nurl =", url)
print(repr(f"repr/url = {url}"))

If you pass the variable "url" further for processing, for example to the library "requests" an error will occur, since the variable "url" contains control sequence characters (detected via "repr").
And secondly: "\n" does not work, see code and screenshot.

Why, when you paste text from the clipboard into the terminal, does the control sequence get pasted too? And why isn't it cut off (if it's so important to you)?
Do you realize how many programs you're breaking with such an ill-considered innovation?

CPython versions tested on:

3.14

Operating systems tested on:

Linux

[StanFromIreland]

This is a bash feature, see here https://superuser.com/questions/421463/why-does-ctrl-v-not-paste-in-bash-linux-shell

https://askubuntu.com/questions/1396132/when-i-paste-in-the-terminal-sometimes-the-contents-are-prefixed-with-the-charac

Paste with ctrl-shift-v

[snooppr]

This is a bash feature, see here https://superuser.com/questions/421463/why-does-ctrl-v-not-paste-in-bash-linux-shell

Paste with ctrl-shift-v

Of course I paste with "ctrl-shift-v" and with "mouse". It is pasted as on the screen and the error occurs exactly when you run the file (program.py), if you run python and paste text from the clipboard, it is pasted normally, the problem is only when you run the file.py! And this behavior is only in Python 3.14, in previous versions everything works fine.

[snooppr]

Perhaps a false alarm.

I restarted the terminal, it didn't help, I rebooted the OS and it helped, everything worked normally. Perhaps after compiling Python 3.14 something affected the terminal, rebooting the PC solves the problem.

[gvanrossum]

Thanks for quickly realizing your mistake.

Why, when you paste text from the clipboard into the terminal, does the control sequence get pasted too? And why isn't it cut off (if it's so important to you)?
Do you realize how many programs you're breaking with such an ill-considered innovation?

Maybe next time you could be a little more tentative in your bug report?

[snooppr]

Thank you for bringing this to your attention.

Thanks for quickly realizing your mistake.

In fact, I did not understand and did not find a specific failure. I compiled python 3.14 from the source code and got errors in my projects, dug around, I found what breaks, published a report, with fervor? Maybe because I thought that this is an innovation in the new version. After all, sometimes new requirements are introduced into Python and compatibility is violated.

To summarize, I don't know what happened to the terminal and why rebooting the OS helped. It was an unexpected behavior, as I didn't see this after building the python3.8-3.13 source code. But anyway, sorry for bothering me, I'll try to be more discreet in the future.