import ctypes user32 = ctypes.windll.user32 user32.SetProcessDPIAware() screensize = user32.GetSystemMetrics(0), user32.GetSystemMetrics(1) print(screensize)
References
https://stackoverflow.com/questions/3129322/how-do-i-get-monitor-resolution-in-python
https://stackoverflow.com/questions/32541475/win32api-is-not-giving-the-correct-coordinates-with-getcursorpos-in-python
When you add new fonts to your system, you need to delete your fontList.cache file in order for matplotlib to find them.
The file fontList.cache is located at your Userfolder –> .matplotlib/fontList.cache or ~/.cache/matplotlib/fontList.cache, for Windows that would normally be C:\Users\yourUsername\.matplotlib\fontList.cache
matplotlib.font_manager matplotlib.font_manager._rebuild()
References
https://stackoverflow.com/questions/26085867/matplotlib-font-not-found
http://andresabino.com/2015/08/18/fonts-and-matplotlib/
https://stackoverflow.com/questions/45877746/changing-fonts-in-matplotlib
# Create your ticker object with M ticks M = 3 yticks = ticker.MaxNLocator(M) # Set the yaxis major locator using your ticker object. You can also choose the minor # tick positions with set_minor_locator. ax.yaxis.set_major_locator(yticks)
References
https://stackoverflow.com/questions/27425974/change-ticks-number-on-a-subplot
plt.savefig("test.png",bbox_inches='tight')
References
https://stackoverflow.com/questions/11837979/removing-white-space-around-a-saved-image-in-matplotlib
from flask import send_file
@app.route('/get_image')
def get_image():
if request.args.get('type') == '1':
filename = 'ok.gif'
else:
filename = 'error.gif'
return send_file(filename, mimetype='image/gif')
References
https://stackoverflow.com/questions/8637153/how-to-return-images-in-flask-response
https://pythonprogramming.net/flask-send-file-tutorial/
UTC to local:
EPOCH_DATETIME = datetime.datetime(1970,1,1)
SECONDS_PER_DAY = 24*60*60
def utc_to_local_datetime( utc_datetime ):
delta = utc_datetime - EPOCH_DATETIME
utc_epoch = SECONDS_PER_DAY * delta.days + delta.seconds
time_struct = time.localtime( utc_epoch )
dt_args = time_struct[:6] + (delta.microseconds,)
return datetime.datetime( *dt_args )
UTC to local:
>>> import datetime, pytz
>>> local_tz = pytz.timezone('Asia/Tokyo')
>>> datetime.datetime.now().replace(tzinfo=pytz.utc).astimezone(local_tz)
datetime.datetime(2011, 3, 4, 16, 2, 3, 311670, tzinfo=<DstTzInfo 'Asia/Tokyo' JST+9:00:00 STD>)
local to UTC:
>>> import datetime, pytz >>> datetime.datetime.now() datetime.datetime(2011, 3, 4, 15, 6, 6, 446583) >>> datetime.datetime.now(pytz.utc) datetime.datetime(2011, 3, 4, 7, 6, 22, 198472, tzinfo=<UTC>)
References
https://k4ml.wordpress.com/2011/03/04/convert-utc-time-to-local/
https://stackoverflow.com/questions/4563272/convert-a-python-utc-datetime-to-a-local-datetime-using-only-python-standard-lib
To run python under gdb there are also two ways.
Interactive:
$ gdb python ... (gdb) run <programname>.py <arguments>
Automatic:
$ gdb -ex r --args python <programname>.py <arguments>
If the process is already running, you can attach to it provided you know the process ID.
$ gdb python <pid of running process>
from gevent.wsgi import WSGIServer
from werkzeug.serving import run_with_reloader
from werkzeug.debug import DebuggedApplication
app = Flask(__name__)
@run_with_reloader
def run_server():
http_server = WSGIServer(('', 5000), DebuggedApplication(app))
http_server.serve_forever()
run_server()
References
https://coderwall.com/p/q2mrbw/gevent-with-debug-support-for-flask
from gevent.wsgi import WSGIServer
from yourapplication import app
http_server = WSGIServer(('', 5000), app)
http_server.serve_forever()
References
http://flask.pocoo.org/docs/1.0/deploying/wsgi-standalone/
Additional options
--host=0.0.0.0 --port=1883
References
https://www.jetbrains.com/help/pycharm/run-debug-configuration-flask-server.html