Develop Reference

Naming a new file in PyCharm

I just started learning python. Up until now, I primarly worked with jupyter notebooks, but now wanted to try out some IDEs. So I tried out PyCharm.
So I started creating some files in a project and started trying out the commands and stuff and there is one thing which just drives me crazy, cause I can not seem to find an answer.
Everytime I create a new python file and name it something like "simple_message", it just saves as a normal file and I can't run any code in it. As soon as I remove the underscore, the file convention changes to an actual python file and I can run the code written in it. So I thought it might be the underscore that makes trouble, so I tried creating other files with underscores but all of them worked. Can someone enlighten me, why does the file name "simple_message" not work as a python file?
Thank you!
From this To this

For me I have to right click on a directory (folder) and select "New" → "Python File" to make a python file. If I go "New" → "File" it will create a text document. So long as you click the correct option you shouldn't have to worry about typing the '.py' or '.txt'
Alternatively I can right click and select "New" → "File" and then name it "simple_message.py" and it will save as a python file correctly, but I must include the .py using this method

Currently PyCharm context menu lets you choose the file type to create.
If you choose "file" you MUST provide the extension .py
If You choose "Python File" pycharm handles the extension for You.

You may need to right click in the text of your .py file and manually choose run from the menu.
Pycharm doesn’t automatically reindex when you create a new .py file, and so it probably just doesn’t know what you want it to run when you hit the green play button.
If you’re saying your python interpreter won’t run a .py file because it has an underscore in the name, that’s just not possible unless you have a modded interpreter or have done something really strange to your OS and I’m guessing you haven’t done either.
Update: it sounds like you don’t have the .py file extension on your file. This will not run for reasons that have nothing to do with Pycharm. Pycharm may “bridge the gap” for you automatically in some situations, but no reason to rely on that.

Keyboard messed up when using Pycharm as an IDE?

Don't get me wrong, Pycharm is an amazing IDE, and with its faults, I've still continued to use it and adapt to its way of working. But its getting pretty tedious not being able to do what I want.
Like in other IDE's, I can CTRL+A to select all the text, somehow it almost always messed up in Pycharm, copying all text will result in what ever the INSERT key does, and deletes my content.
Clicking backspace doesn't delete the highlighted content, instead I have to deliperatly click the delete key, and this isn't exactly wrong, but it doesn't fit in with other IDE's.
I noticed when switching from Pycharm to another IDE, I was doing what I did in Pycharm and it just felt unnatural, is there a way to make Pycharm work like other IDE's?

If you go into File->Settings and select Keymap, there is a drop-down menu where you can select the emulation that you prefer including Emacs, Netbeans, and Visual Studio

Found this in another forum:
"Please disable IdeaVim plugin on the File | Settings | Plugins tab."
Worked for me.

How to make auto indention in nano while programming in python in linux?

I am a beginner programmer as well as linux user. Before, I was using windows and the python IDLE was so good. I need not needed to press tab button after the "If" statement or any other loops.
Now, I am using Linux and started to write programs through the command line text editor of ubuntu called as "nano". Here, I need to press tab all the time i use "if" statement. It is very tedious. Especially when there is bunch of nested loops, it becomes difficult to remember the tabs count. And i was thinking if there was any idea to make it work like in the IDLE in windows. I also tried to google the problem but i couldn't explain it in few words. I hope you've got what my problem actually is. And i need a descent solution for this.

Try adding the following to ~/.nanorc (you may need to create the file if it doesn't exist):
set autoindent
Note that nano is pretty lightweight editor, so it lacks a lot of features and customization that other editors provide. You might look into something like emacs or vim if you find yourself limited by your editor.
EDIT: More detail as requested:
Type nano ~/.nanorc in your terminal to open the config file with nano.
Once inside nano, type set autoindent to enable auto-indentation.
Then type Ctrl-o Ctrl-x to save the file.

When you run nano add -i to the command (as in nano -i).
Also you might find this useful.

Try just "M-I" (Esc-I) to switch off autoindent before pasting with Ctrl-Ins (or right mouse click)

Hard times with IDLE

So I've been working with Python on my computer for about the last 2 months with no issues. Just recently however, something went wrong with IDLE. I am running python 2.5
I used to be able to right-click and select "Edit with IDLE" for a python program. That option no longer is available. When I try "open with" and navigate to the idlelib in python, I can select idle.bat, idle.py, or idle.py (no console). I've tried each option and each fails to open and returns an error that either it is not a valid Win32 application or that "Windows cannot find idle.pyw"
I am able to open IDLE on its own and use the open function in IDLE to open files, but can't open files directly using IDLE as I could before.
There was formerly the White background icon with the python logo, which is now replace by windows' logo for no program (white square, blue and red dots). I have tried to repair-install and unistall-re-install both with no success. There is no firewall or antivirus, and it was installed with permissions for all users.
Any help is much appreciated, this has been maddeningly difficult to figure out.

The native one that comes with python on windows is problematic at times, so you could uninstall and reinstall it as a solution, or open it from its directory instead of a shortcut, or get another IDE. I recommend the Ninja IDE very nice and light looking, or if you're on linux you could just use vim from terminal.
Also, if it's extremely necessary, try upgrading your python version and IDE. I think the IDE included for windows looks like a modified emacs to be honest.

The fact that Windows changed the right-context menu for .py files has nothing to do with Idle, and probably nothing to do with Python either. You are not the first to have this problem. You can potentially restore 'Edit with Idle' but without directly editing the registry (an expert option) I only knew how to do so in XP. You might also be able to fix it be going back to a restore point before it changed, but you would lose all updates since, so I would not do that.
I am surprised that re-installing did not restore it. The line was once gone for me, too, and was restored by a recent install.
I have Win7. I just now tried 'Open with', navigated to 3.4 idlelib, and selected idle.bat (the .py files were not offered as a choice). The .py file opened in an Idle editor just fine. It is now a permanent option for Open with, without having to navigate.
Idle has gotten perhaps 150 patches since 2.5. Even if you have to edit programs to run on 2.5, I strongly recommend installing a current version of Python and Idle.
I have no ideal what your comment "the programs still can't find anything associated with it, like Tkinter for example " means.

I need help recognizing files in komodo in order to run them in python

I am just learning python as my first programming language, and I just installed python 3.3, 64 bit on my windows 7 OS.
I installed komodo edit 8.0, and I am trying to print ('Hello world'). I set up the correct path so that I can access python through my command prompt.
From komodo, I saved my helloworld.py file to my desktop.
When I try to run the command prompt, I search for the file, and it says file not found, or file does not exist. I can open the folder from komodo, but it appears that it is empty. When I open the folder directly from my desktop, I see the file is in there, so it seems that komodo is not recognizing it.
How can I get Komodo to recognize my saved file and run it in python? I am very new so please go step by step if you can.
Thank you!

Many of the comments you've received recommend avoiding Komodo IDE. But you're not using Komodo IDE! You are using Komodo Edit, so the comments about IDEs just don't apply.
Sure, you could use Notepad++ or even plain old Notepad, but neither of those offers any real benefit over Komodo Edit. In fact, you would be losing a valuable feature of Komodo (both IDE and Edit version): realtime syntax checking.
I use Komodo IDE and like it quite a lot. If you want to run Python programs inside Komodo and debug them right there, Komodo IDE is a great choice.
One problem may be simply that you're expecting Komodo Edit to offer the same features as Komodo IDE. It doesn't. It's just a very nice editor. You need to run your Python code outside Komodo using the command line or other means. Just open a command prompt, cd to your directory, and type python yourfilename.py.
But you say you already tried that? It must be simply a matter of being in the wrong directory.
If you have your .py file open in Komodo, do a Ctrl+O right there, and the Open File dialog will show you the file's path at the top of the dialog. You can use Alt+D to select the path, and from there you can copy it and paste it into the command line if you need to cd to that directory.
If you'd like to use an interactive debugger (an excellent idea!) without paying for Komodo IDE, you can use PythonWin.
Install Mark Hammond's Python for Windows extensions. Included in this package is PythonWin. You can open your .py file in PythonWin and select File/Debug/Step In to start debugging your code. Then you can use the other commands on the File/Debug menu to step through it. Take note of the F10/F11/etc. keyboard shortcuts which give quicker access to these commands.
Whichever way you do it, I highly recommend using an interactive debugger like this when learning a new language. Being able to stop the code and look at your variables right then and there is a huge improvement over being limited to print statements for debugging.
So I disagree quite strongly with the recommendations against using an IDE like Komodo. The very first thing I look for when I learn a new programming language is an interactive visual debugger. I don't care too much whether that debugger comes packaged as part of an "IDE" or is a standalone debugger, as long as it shows the source code, makes it easy to single step, and shows the variables whenever it's paused.

Ok heres what I personally do.
Open run, type in cmd
Navigate to whatever directory my mypythonfile.py file is
Open whatever text editor you feel like ( personally i use notepad++ because it is NOT an IDE like kodomo, but just a pretty text editor.)
Type python mypythonfile.py and hit enter. This will run the program.
Open mypythonfile.py in text editor program.
Make changes to the python file.
Go back to the cmd window and press arrow up ( to go to the last typed command) and then press enter again, to run the program again.
Repeat steps 6-7 until your program is perfect.
It seems like you are having trouble with the Kodomo IDE instead of the actual learning python process. IDEs are complicated tools with lots of buttons that are scary. Learn the language first, then once you are comfortable there, then maybe you will use an IDE? Or maybe you will just keep using a text editor instead. Thats up to you.