pythonw exe or python exe

Question

Long story short  pythonw exe does nothing  python exe accepts nothing  which one should I use    test py   print  a    CMD window   C  path gt pythonw exe test py  lt BLANK LINE gt  C  path gt   C  path gt python exe test py   File  C  path test py   line 7     print  a                SyntaxError  invalid syntax  C  path gt    Please tell me what I m doing terrible wrong

User · Accepted Answer

If you don t want a terminal window to pop up when you run your program  use pythonw exe  Otherwise  use python exe  Regarding the syntax error  print is now a function in 3 x So use instead    print  a

User · Answer

To summarize and complement the existing answers    python exe is a console  terminal  application for launching CLI-type scripts    Unless run from an existing console window  python exe opens a new console window  Standard streams sys stdin  sys stdout and sys stderr are connected to the console window  Execution is synchronous when launched from a cmd exe or PowerShell console window  See eryksun s 1st comment below    If a new console window was created  it stays open until the script terminates  When invoked from an existing console window  the prompt is blocked until the script terminates    pythonw exe is a GUI app for launching GUI no-UI-at-all scripts    NO console window is opened  Execution is asynchronous    When invoked from a console window  the script is merely launched and the prompt returns right away  whether the script is still running or not   Standard streams sys stdin  sys stdout and sys stderr are NOT available    Caution  Unless you take extra steps  this has potentially unexpected side effects    Unhandled exceptions cause the script to abort silently  In Python 2 x  simply trying to use print   can cause that to happen  in 3 x  print   simply has no effect   To prevent that from within your script  and to learn more  see this answer of mine  Ad-hoc  you can use output redirection Thanks   handle  pythonw exe yourScript pyw 1 gt stdout txt 2 gt stderr txt  from PowerShell  cmd  c pythonw exe yourScript pyw 1 gt stdout txt 2 gt stderr txt  to capture stdout and stderr output in files  If you re confident that use of print   is the only reason your script fails silently with pythonw exe  and you re not interested in stdout output  use  handle s command from the comments  pythonw exe yourScript pyw 1 gt NUL 2 gt  amp 1 Caveat  This output redirection technique does not work when invoking   pyw scripts directly  as opposed to by passing the script file path to pythonw exe   See eryksun s 2nd comment and its follow-ups below         You can control which of the executables runs your script by default - such as when opened from Explorer - by choosing the right filename extension      py files are by default associated  invoked  with python exe   pyw files are by default associated  invoked  with pythonw exe

User · Answer

I was struggling to get this to work for a while  Once you change the extension to  pyw  make sure that you open properties of the file and direct the  open with  path to pythonw exe

User · Answer

See here   http   docs python org using windows html  pythonw exe  This suppresses the terminal window on startup

User · Answer

If you re going to call a python script from some other process  say  from the command line   use pythonw exe  Otherwise  your user will continuously see a cmd window launching the python process  It ll still run your script just the same  but it won t intrude on the user experience   An example might be sending an email  python exe will pop up a CLI window  send the email  then close the window  It ll appear as a quick flash  and can be considered somewhat annoying  pythonw exe avoids this  but still sends the email

User · Answer

In my experience the pythonw exe is faster at least with using pygame

[python] pythonw.exe or python.exe?

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