How to repeat last command in python interpreter shell

Question

How do I repeat the last command  The usual keys  Up  Ctrl Up  Alt-p don t work  They produce nonsensical characters    ve  kakarukeys localhost ve   python Python 2 6 6  r266 84292  Nov 15 2010  21 48 32    GCC 4 4 4 20100630  Red Hat 4 4 4-10   on linux2 Type  help    copyright    credits  or  license  for more information   gt  gt  gt  print  hello world  hello world  gt  gt  gt     A   File   lt stdin gt    line 1       SyntaxError  invalid syntax  gt  gt  gt     1 5A   File   lt stdin gt    line 1      1 5A       SyntaxError  invalid syntax  gt  gt  gt    p   File   lt stdin gt    line 1     p       SyntaxError  invalid syntax  gt  gt  gt

User · Answer

Alt   p for previous command from histroy  Alt   n for next command from history   This is default configure  and you can change these key shortcut at your preference from Options -  Configure IDLE

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If you use Debian Jessie run this to fix your system installation 2 7 9  sudo apt-get install libncurses5-dev libncursesw5-dev   To fix my other 3 5 2 installation which I installed with pyenv    pip install readline   Sources    1  https   www cyberciti biz faq linux-install-ncurses-library-headers-on-debian-ubuntu-centos-fedora    2  https   github com yyuu pyenv issues 240   3  https   stackoverflow com a 40229934 332788

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In IDLE  go to Options -  Configure IDLE -  Keys and there select history-next and then history-previous to change the keys   Then click on Get New Keys for Selection and you are ready to choose whatever key combination you want

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In my mac os python3  you can use  control p  early command contrlo n  next command

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I don t understand why there are so many long explanations about this  All you have to do is install the pyreadline package with  pip install pyreadline  sudo  port install py-readline  on Mac    Assuming you have already installed PIP

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Using arrow keys to go to the start of the command and hitting enter copies it as the current command   Then just hit enter to run it again

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Up arrow works for me too  And i don t think you need to install the Readline module for python builtin commandline  U should try Ipython to check  Or maybe it s the problem of your keybord map

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I find information that I copied below answer the question     Adapt yourself to IDLE  Instead of hitting the up arrow to bring back a previous command  if you just put your cursor on the previous command you want to repeat and then press  enter   that command will be repeated at the current command prompt  Press enter again  and the command gets executed       Force IDLE to adapt itself to you  If you insist on making the arrow keys in the IDLE command prompt window work like those in every other command prompt  you can do this  Go to the  Options  menu  select  Configure IDLE   and then  Keys   Changing the key that is associated with the  previous command  and  next command  actions to be the up arrow  and down arrow  respectively    source

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For anaconda for python 3 5  I needed to install ncurses  conda install ncurses   After the ncurses install tab complete  history  and navigating via left and right arrows worked in the interactive shell

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For repeating the last command in python  you can use  lt Alt   n gt  in windows

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You don t need a custom script like pyfunc s answer for OSX  at least on mavericks    In Idle click on Idle -  Preferences -  Keys  locate  history-next  and  history-previous   and either leave them with their default keyboard shortcut or assign  up arrow  and  down arrow  per typical expected terminal behavior     This is on Idle 2 7 on OSX Mavericks

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On Mac with Python 2 x       brew install rlwrap  Start with rlwrap       rlwrap python

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If using MacOSX  press control p to cycle up and control n to cycle down   I am using IDLE Python 3 4 1 Shell

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Ctrl p is the normal alternative to the up arrow  Make sure you have gnu readline enabled in your Python build

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I use the following to enable history on python shell   This is my  pythonstartup file   PYTHONSTARTUP environment variable is set to this file path     python startup file  import readline  import rlcompleter  import atexit  import os    tab completion  readline parse and bind  tab  complete      history file  histfile   os path join os environ  HOME      pythonhistory    try       readline read history file histfile   except IOError       pass  atexit register readline write history file  histfile   del os  histfile  readline  rlcompleter   You will need to have the modules readline  rlcompleter to enable this      Check out the info on this at   http   docs python org using cmdline html envvar-PYTHONSTARTUP    Modules required    http   docs python org library readline html http   docs python org library rlcompleter html

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On CentOS  I fix this by  yum install readline-devel   and then recompile python 3 4   On OpenSUSE  I fix this by  pip3 install readline   Referring to this answer https   stackoverflow com a 26356378 2817654  Perhaps  pip3 install readline  is a general solution  Haven t tried on my CentOS

User · Answer

You didn t specify which environment  Assuming you are using IDLE   From IDLE documentation      Command history   Alt-p retrieves previous command matching what you have typed  Alt-n retrieves next         These are Control-p  Control-n on the Mac  Return while cursor is on a previous command retrieves that command  Expand word is also useful to reduce typing

User · Answer

ALT   p works for me on Enthought Python in Windows

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alt p   go into options tab configure idle Keys   look under history-previous for the command  you can change it to something you like better once here

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By default use ALT p for previous command  you can change to Up-Arrow instead in IDLE GUi    OPtions    Configure IDLE   Key   Custom Key Binding It is not necesary to run a custom script  besides readlines module doesnt run in Windows  Hope That Help

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it is control   p in Mac os in python 3 4 IDEL

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This can happen when you run python script py vs just python to enter the interactive shell  among other reasons for readline being disabled   Try   import readline

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Up Arrow works only in Python command line   In IDLE  Python GUI  the defaults are  Alt-p   retrieves previous command matching what you have typed  Alt-n   retrieves next    In Python 2 7 9 for example  you can see change the Action Keys selecting  Options -  Configure IDLE -   Tab  Keys

User · Answer

On Ubuntu Server 12 04  I had this problem after installing a version of Python from source  Python3 4     Some of the comments here recommend installing Ipython and I want to mention that I have the same behavior even with Ipython  From what I can tell  this is a readline problem     For Ubuntu 12 04 server  I had to install libncurses-dev and libreadline-dev and then install Python from source for up-history  readline  behavior to be enabled  I pretty much did this   sudo apt-get install libncurses-dev libreadline-dev   After that  I deleted the previously installed Python  NOT THE SYSTEM PYTHON  the one I had installed from source   and reinstalled it from source and everything worked as expected   I did not have to install anything with pip or edit  pythonstartup

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On Ubuntu 16 04  I had the same problem after upgrading Python from the preloaded 3 5 to version 3 7 from source code   As  erewok suggested  I did  sudo apt-get install libncurses-dev libreadline-dev   followed by   sudo make install After that  the arrow-up key worked  Not sure which module is required to fix the problem or both  but without  make install   none would work  During initial make  there were some red-flag errors  but ignored and completed the build  This time  there didn t seem to have any errors

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Ipython isn t allways the way    I like it pretty much  but if you try run Django shell with ipython  Something like     ipython manage py shell   it does n work correctly if you use virtualenv  Django needs some special includes which aren t there if you start ipython  because it starts default system python  but not that virtual

[python] How to repeat last command in python interpreter shell?

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