diff options
Diffstat (limited to 'bin/cosmo_calc.py')
| -rwxr-xr-x | bin/cosmo_calc.py | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/bin/cosmo_calc.py b/bin/cosmo_calc.py index 3f0b81f..3b7a71f 100755 --- a/bin/cosmo_calc.py +++ b/bin/cosmo_calc.py @@ -1,7 +1,8 @@ #!/usr/bin/env python3 # -# Copyright (c) 2017 Weitian LI <liweitianux@live.com> +# Copyright (c) 2017 Weitian LI <weitian@aaronly.me> # MIT license +# """ Cosmology calculator with support of Chandra ACIS-specific quantities. @@ -85,15 +86,15 @@ def main(): description="Cosmology calculator with Chandra-specific quantities") parser.add_argument("-H", "--hubble", dest="H0", type=float, default=H0, - help="Present-day Hubble parameter " + + help="present-day Hubble parameter " + "(default: %s [km/s/Mpc])" % H0) parser.add_argument("-M", "--omega-m", dest="Om0", type=float, default=Om0, - help="Present-day matter density (default: %s)" % Om0) + help="present-day matter density (default: %s)" % Om0) parser.add_argument("-b", "--brief", dest="brief", action="store_true", help="be brief") - parser.add_argument("-U", "--unit", dest="unit", - help="unit for output quantity if supported") + parser.add_argument("-u", "--unit", dest="unit", + help="set the unit for output quantity if supported") parser.add_argument("-L", "--luminosity-distance", dest="luminosity_distance", action="store_true", @@ -125,6 +126,8 @@ def main(): q_active = get_quantities(args) if len(q_active) > 1: + # Multiple quantities to be calculated, thus unit specification + # and brief output are disabled. if args.unit is not None: args.unit = None print("WARNING: ignored argument --unit", file=sys.stderr) |