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I'm starting to play with scikit-learn after enjoying my AI class last semester. I have no prior experience with python (we used WEKA) so I set up python3 with a virtual env that has all the packages. I've activated the virtual env and try running the below code via python3 <filename.py>

from sklearn import svm, datasets from numpy import genfromtxt, savetxt import sys

def main():
    digits = datasets.load_digits()
    clf = svm.SVC(gamma=0.001, C=100.)
    clf.fit(digits.data[:-1], digits.target[:-1])  
    SVC(C=100.0, cache_size=200, class_weight=None, coef0=0.0, degree=3,
    gamma=0.001, kernel='rbf', max_iter=-1, probability=False,
    random_state=None, shrinking=True, tol=0.001, verbose=False)
    print(clf.predict(digits.data[-1]))
    sys.stdout.flush()

which prints nothing to iterm (a mac os x bash terminal). So tried running this code

def main():
    print("hi", end='\n', file=sys.stdout, flush=True)

which also prints nothing. I've looked at the print documentation and asked a friend (who's only used 2.7) without figuring this out

Does your main() function ever get called? Try adding this to the end of your module.

if __name__=="__main__":
    main()

Why can't I print to terminal with my python script?, The terminal prints nothing, just goes to newline. How do I print to the terminal if not with sys.stdout.write("string")?. share. Share a link to this question. Copy link The PRINT statement will print nothing if the expression evaluates to a null. Apparently @team ends up being null as the result of the preceding statement, causing the PRINT to output nothing. If you want to print something even when the variable is null, use ISNULL or COALESCE: PRINT 'value is ' + ISNULL(@team, '(null)');

Did you actually run the main() function? In the above code you defined a procedure called main(), but it must be called to do something with it. Because you're working on a terminal, simply type main() and press [ENTER].

If you were running the program from a file, then @AndrewJohnson's answer is spot-on.

command line, This does not work with Wayland; if you're using Ubuntu 17.10 and didn't change to using Xorg at login, this solution isn't for you. You can use� However, when I call the update function I just get the output list. The print statement in the function doesn't get printed in Jupiter lab. I know the code block with the print statement ran as the outputs list that gets returned is not empty. Any idea why the print statement doesn't print out in Jupiter lab or how to fix it?

I was having the same problem with several types of python script. Just corrected it by checking the indentation. Correct indentation.

Python not printing to gnome terminal?, Tags: command line, not printing, not working, python, terminal upgrade to 10.10 my print statements don't seem to print to the terminal. Reset the kernel and re-ran the program and now my print statements are working properly. Later on, I've found that when I was first having the printing problem, all print outputs were actually being sent to the ipython console terminal (on my Linux box), instead of being embed on the notebook.

Python, simple print command does not show any output in , GitHub is home to over 50 million developers working together to host 2- Output goes to Terminal but not to the Debug Console like it used to. SITUATION: The Arduino is connected to a computer. The Arduino IDE is running and the Serial Monitor is open. The Arduino sketch contains Serial.print() and Serial.println() statements but the text is not appearing in the Serial Monitor. STEP 1: Verify the Arduino and the Arduino IDE are connected to the same communications port.

Writing to a File with Python's print() Function, Redirecting a Python's Script Output in the Terminal It was not hard-coded in such a way that specified text can only be written to the display. Instead, it sends � Select the Windows Start button, browse to the Control Panel, and double-click Printers and Faxes. If the printer shows Offline, right-click the printer and select Use Printer Online. Double-click the printer and if there are print jobs displayed in the queue, choose Printer, then Cancel All Documents.

Where does console output go, If it's not opened, go to Window > Toggle System Console. Note that Blender's log messages will now appear in the terminal window from which you started it. Ensure that you have the Printers option selected in your Remote Desktop settings. You can check this by bringing up the Remote Desktop Connection screen, selecting Local Resources and ensuring the Printers option is selected. 2.

Comments
  • Er, did you actually run the main() function?
  • /facepalm. That's what I get for trying to jump straight into scikit without taking too much time to look at how python works. Thanks..