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これは日々の作業を通して学んだことや毎日の生活で気づいたことをを記録しておく備忘録である。
HTML ファイル生成日時: 2025/04/03 13:41:35.024 (台灣標準時)
これまで GUI のあるプログラムを書いたことがほとんどなかったので、どの ように書けばよいのか調べてみたでござる。 tkinter.ttk というものがある ようなので、そこれを使ってみることとしたでござる。試しに、 LST (Local Sidereal Time) clock を作ってみたでござる。ソースコードは以下の通りで ござる。
#!/usr/pkg/bin/python3.13 # # Time-stamp: <2025/03/23 16:55:48 (UT+08:00) daisuke> # # importing argparse module import argparse # importing astropy module import astropy.time import astropy.units # importing datetime module import datetime # importing sys module import sys # importing tkinter module import tkinter import tkinter.ttk # initialising a parser parser = argparse.ArgumentParser (description='LST Clock') # adding arguments parser.add_argument ('-s', '--site', default='Lulin', \ help='Observatory site name (default: Lulin)') parser.add_argument ('-l', '--longitude', default='120:52:21.5', \ help='Longitude in ddd:mm:ss.s format') parser.add_argument ('-b', '--latitude', default='+23:28:10.0', \ help='Latitude in [+/-]dd:mm:ss.s format') parser.add_argument ('-a', '--altitude', type=float, default=2862.0, \ help='Altitude above sea level in metre') parser.add_argument ('-z', '--timezone', type=float, default=8.0, \ help='offset from UT in hour') # parsing arguments args = parser.parse_args () # command-line arguments site_name = args.site longitude = args.longitude latitude = args.latitude altitude_m = args.altitude timezone_hr = args.timezone # class AstroTime class AstroTime: def __init__ (self, site, lon, lat, altitude, tz): if ( (site == '') or (lon == '') or (lat == '') or (altitude == '') \ or (tz == '') ): print (f'ERROR: missing information') sys.exit (0) self.site = site self.lon = lon self.lat = lat self.altitude = altitude self.tz = tz # method to find date/time in UTC def find_utcnow (self): # date/time utc_now = datetime.datetime.now (datetime.UTC) utc_YYYY = utc_now.year utc_MM = utc_now.month utc_DD = utc_now.day utc_hh = utc_now.hour utc_mm = utc_now.minute utc_ss = utc_now.second # utc in YYYY-MM-DD utc_YYYYMMDD = f'{utc_YYYY:04d}-{utc_MM:02d}-{utc_DD:02d}' # utc in hh:mm:ss format utc_hhmmss = f'{utc_hh:02d}:{utc_mm:02d}:{utc_ss:02d}' # return utc in hh:mm:ss format return (utc_YYYYMMDD, utc_hhmmss) # method to find local time def find_localtime (self): # finding local time offset = datetime.timedelta (hours=self.tz) tz = datetime.timezone (offset) lt_now = datetime.datetime.now (tz) lt_YYYY = lt_now.year lt_MM = lt_now.month lt_DD = lt_now.day lt_hh = lt_now.hour lt_mm = lt_now.minute lt_ss = lt_now.second # localtime in YYYY-MM-DD lt_YYYYMMDD = f'{lt_YYYY:04d}-{lt_MM:02d}-{lt_DD:02d}' # localtime in hh:mm:ss format lt_hhmmss = f'{lt_hh:02d}:{lt_mm:02d}:{lt_ss:02d}' # return localtime in hh:mm:ss format return (lt_YYYYMMDD, lt_hhmmss) # method to find local sidereal time def find_lst (self): (utc_YYYYMMDD, utc_hhmmss) = astrotime.find_utcnow () utc_str = f'{utc_YYYYMMDD} {utc_hhmmss}' t_astropy = astropy.time.Time (utc_str, format='iso', scale='utc', \ location=(self.lon, self.lat) ) lst = t_astropy.sidereal_time ('apparent') lst_hhmmss = f'{int (lst.hms.h):02d}:{int (lst.hms.m):02d}:{int (lst.hms.s):02d}' return (lst_hhmmss) # function to update label def update_time (): (utc_YYYYMMDD, utc_hhmmss) = astrotime.find_utcnow () (lt_YYYYMMDD, lt_hhmmss) = astrotime.find_localtime () (lst_hhmmss) = astrotime.find_lst () label_utc_YYYYMMDD.configure (text=f'Date (UTC): {utc_YYYYMMDD}') label_utc_hhmmss.configure (text=f'Time (UTC): {utc_hhmmss}') label_lt_YYYYMMDD.configure (text=f'Date (Local): {lt_YYYYMMDD}') label_lt_hhmmss.configure (text=f'Time (Local): {lt_hhmmss}') label_lst_hhmmss.configure (text=f'LST: {lst_hhmmss}') gui.after (300, update_time) # main routine if (__name__ == '__main__'): # making AstroTime object astrotime = AstroTime (site_name, longitude, latitude, altitude_m, \ timezone_hr) # root window of GUI gui = tkinter.Tk () # style style = tkinter.ttk.Style () style.configure ('TButton', font=('Helvetica', 32)) # frame frame = tkinter.ttk.Frame (gui, padding=10) frame.grid () # date/time (utc_YYYYMMDD, utc_hhmmss) = astrotime.find_utcnow () (lt_YYYYMMDD, lt_hhmmss) = astrotime.find_localtime () (lst_hhmmss) = astrotime.find_lst () # adding components label_title = tkinter.ttk.Label (frame, \ padding=8, \ text=f'LST Clock', \ font=('Helvetica', 64)) label_title.grid (column=0, row=0, columnspan=2) label_siteinfo = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Site Information: {astrotime.site}', \ font=('Helvetica', 48) ) label_siteinfo.grid (column=0, row=1, columnspan=2) label_lon = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Longitude: {astrotime.lon}', \ font=('Helvetica', 32) ) label_lon.grid (column=0, row=2) label_lat = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Latitude: {astrotime.lat}', \ font=('Helvetica', 32) ) label_lat.grid (column=1, row=2) label_altitude = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Altitude: {astrotime.altitude}-m', \ font=('Helvetica', 32) ) label_altitude.grid (column=0, row=3) label_timezone = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Timezone: {astrotime.tz:+4.1f}-hr', \ font=('Helvetica', 32) ) label_timezone.grid (column=1, row=3) label_time = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Time', \ font=('Helvetica', 48) ) label_time.grid (column=0, row=4, columnspan=2) label_utc_YYYYMMDD = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Date (UTC): {utc_YYYYMMDD}', \ font=('Helvetica', 32) ) label_utc_YYYYMMDD.grid (column=0, row=5) label_utc_hhmmss = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Time (UTC): {utc_hhmmss}', \ font=('Helvetica', 32) ) label_utc_hhmmss.grid (column=1, row=5) label_lt_YYYYMMDD = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Date (Local): {lt_YYYYMMDD}', \ font=('Helvetica', 32) ) label_lt_YYYYMMDD.grid (column=0, row=6) label_lt_hhmmss = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'Time (Local): {lt_hhmmss}', \ font=('Helvetica', 32) ) label_lt_hhmmss.grid (column=1, row=6) label_lst_hhmmss = tkinter.ttk.Label ( frame, \ padding=8, \ text=f'LST: {lst_hhmmss}', \ font=('Helvetica', 32) ) label_lst_hhmmss.grid (column=1, row=7) button_quit = tkinter.ttk.Button ( frame, \ command=gui.destroy, \ text=f'Quit', \ style='TButton' ) button_quit.grid (column=0, row=8, columnspan=2) update_time () gui.mainloop ()
以下のように実行してみたでござる。
% python3.13 xlst.py &
以下のようなウィンドウが表示されるでござる。
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LST の計算には Astropy を使っているので問題ないはずでござるが、 XEphem と比べてみたでござる。大きな違いはないようでござる。